Answer:
Step-by-step explanation:
5 times -4 is -20, so the equation becomes -20 - r + 1 = -37
-20 plus 1 equals -19, so the equation is now -19 - r = -37
Then you add 19 to both sides to isolate r
-r = -18
To get a positive r, divide or multiply both sides by -1, and you get r = 18
[tex]5(-4)-r+1=-37[/tex]
Simplify:
[tex]-20-r+1=-37[/tex]
Combine Like Terms:
[tex](-r)+(-20+1)=-37[/tex]
[tex]-r-19=-37[/tex]
Add 19 to both sides:
[tex]-r-19+19=-37+19[/tex]
[tex]-r=-18[/tex]
Divide both sides by -1:(To remove the negative from the variable r)
[tex]\dfrac{-r}{-1}=\dfrac{-18}{-1}[/tex]
[tex]\boxed{r=18}[/tex]
The base of a triangle is 2inches more than 2 times the height. If the area of the triangle is 12 square inches, find the base and height.
Answer:
Base: 8. Height: 3.
Step-by-step explanation:
Let the height be x. Then the base would be 2x+2. The formula for the area of a triangle is 1/2*base*height. We know the area, and we know the base and height in terms of x. Now you just solve for x. 1/2*x*(2x+2) = 12. x(2x+2) = 24. You could plug in factors of 24, but I used the quadratic formula to solve this equation. 2x^2 +2x -24 = 0. Plugging in these values into the quadratic formula, we get that x = 3. This means that the height is 3. Since the base is 2x+2 and x is 3, then the base is 8.
Leila is walking from the park at point P to a restaurant at point R. She wants to stop for a break when the distance she has travelled and the distance she has left to travel has a ratio of 3:5, at which point should Leila stop for her break?
Answer: To determine the point where Leila should stop for her break, we need to find the midpoint of the line segment connecting points P and R, since the midpoint will represent equal distances from both points.
Let the distance between points P and R be d, and let's call the point where Leila stops for her break point B.
Since the ratio of the distance travelled to the distance remaining is 3:5, we know that the distance from B to P is 3/8 of the total distance d, and the distance from B to R is 5/8 of the total distance d.
Therefore, point B is the midpoint of line segment PR, and can be found by dividing the distance between P and R by 2.
Step-by-step explanation:
One model of cars comes with 4 choices
of audio systems, 2 choices of roof
styles (with or without moon roof), and
3 choices of seat covers (cloth, vinyl, or
leather). How many different car
ala
models does a customer have to choose
from if the customer can choose one
10
type of audio system, one style of roof,
and one type of seat cover
A customer has 4 x 2 x 3 = 24 different car models to choose from if the customer can choose one type of audio system, one style of roof, and one type of seat cover.
-9 3/8 as an improper fraction
Answer:the answer is -69/8
Step-by-step explanation:
first you plug -9 into 3/8 and it gives you -72/8+3/8 if you add those together you get -69/8
Bailey is making festive cookie bags. She tried to split all her cookies evenly by putting 15 per bag, but the last bag had only 14 cookies. So, she tried putting 10 cookies per bag, but the last bag had only 9. Her mom brought 2 more cookies. Now, Bailey tries 9, then 8, cookies per bag, but she can’t do it. Finally, Bailey puts 7 cookies in each bag evenly! What is the least possible total number of cookies?
The least possible total number of cookies are 21.
What is total?A total is a whole or complete amount, and "to total" is to add numbers or to destroy something. In math, you total numbers by adding them: the result is the total.
Given that, Bailey is making festive cookie bags. She tried to split all her cookies evenly by putting 15 per bag, but the last bag had only 14 cookies.
Here, 15+14=29
29 is our first number. Bailey cannot evenly split the cookies into each bag with that amount of cookies, so we must move on to the next number.
Now, 10+9+2=21
21 can be divided 3 times by 7. Now we know the least amount of cookies total, is 21.
Therefore, the total number of cookies are 21.
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the function of G takes a student's first name for its input and gives the number of letters in the first name for its output
Describe the meaning of G(jada)=4
Find the value of G(Diego).
Answer:
Step-by-step explanation:
The meaning of the function notations are
G(Jada) = 4 means that the first name Jada has four letters
C(11-15)= chemistry means that the Monday class for 11-15 is chemistry
How to interpret the function notations?
The meaning of the function G
From the question, we have the following parameters that can be used in our computation:
Function G gives the number of letters in the first name for its output.
Next, we have
G(Jada) = 4
Using the meaning of the function, we have
G(Jada) = 4 means that the first name Jada has four letters
The meaning of the function C
From the question, we have the following parameters that can be used in our computation:
Function C gives a student's Monday class for its output.
Next, we have
C(11-15)= chemistry
Using the meaning of the function, we have
C(11-15)= chemistry means that the Monday class for 11-15 is chemistry
Sketch an angle θ in standard position such that θ has the least possible positive measure and the point (−3,4) is on the terminal side of θ. Then find the exact values of the six trigonometric functions for θ.
To sketch the angle θ in standard position, you can start by plotting the point ( -3, 4 ) on the coordinate plane. Next, you draw a line from the origin ( 0, 0 ) to the point ( -3, 4 ), which represents the terminal side of the angle.
Now, you can use the six trigonometric functions to find the exact values for θ:
Cosine ( cos θ ) = x / r = -3 / 5
Sine ( sin θ ) = y / r = 4 / 5
Tangent ( tan θ ) = y / x = 4 / -3
Secant ( sec θ ) = 1 / cos θ = -5 / 3
Cosecant ( csc θ ) = 1 / sin θ = -5 / 4
Cotangent ( cot θ ) = 1 / tan θ = -3 / 4
Here, r represents the distance from the origin to the point ( -3, 4 ), which is 5 units. Note that these values are for the least positive measure of the angle, which is in the second quadrant.
Use the general slicing method to find the volume of the following solid.
The solid with a semicircular base of radius 4 whose cross sections perpendicular to the base and parallel to the diameter are squares.
The volume of the solid with a semicircular base of radius 4 whose cross sections perpendicular to the base and parallel to the diameter are squares is 512/3 cubic units
The radius of the base = 4 units
The length of the side of the square = 2x
The area of the square = a^2
Where a is side of the square
The area of the square = (2x)^2
= 4x^2
The equation of the circle is
x^2 + y^2 = 16
x^2 = 16 - y^2
The area = 4(16 - y^2 )
= 64 - 4y^2
The volume of the square
V = [tex]\int\limits^a_b {A(y)} \, dy[/tex]
= [tex]\int\limits^4_0 {64-4y^{2} } \, dy[/tex]
= 64×4 - 4×(4^3/3)
= 256 - 256/3
= 512/3 cubic units
Therefore, the volume of the solid is 512/3 cubic units
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The red triangle is a dilation of the blue triangle, with a scale factor, of k=1.5
Use the hotspots to fill in the missing measurements and similarity statement
The measure of each angle and side is given above.
What is image dilation?An enlargement or reduction of a figure that preserves shape but not size.All dilations are similar to the original figure.Dilations have a center and a scale factor.Given is that the red triangle is a dilation of the blue triangle, with a scale factor of {k} = 1.5.
We can write -
57/RT = 1.5
RT = 57/1.5
RT = 38
LM/20 = 1.5
LM = 20 x 1.5
LM = 30
MN/26 = 1.5
MN = 26 x 1.5
MN = 39
∠2 = 15°
∠1 = 121°
Therefore, the measure of each angle and side is given above.
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What is the x-intercept of this equation? 3x + 5y = 9
To find the x-intercept of the equation 3x + 5y = 9, we set y = 0 and solve for x.When y = 0, the equation becomes 3x + 5(0) = 9, which simplifies to 3x = 9.Solving for x, we get x = 3.The x-intercept of the equation 3x + 5y = 9 is (3, 0).
What is x-intercept ?
An x-intercept is a point where a graph or a line crosses the x-axis. It is the value of the independent variable (x) when the dependent variable (y) is equal to zero. In other words, it is the point at which a function or equation intersects the x-axis, and its coordinates are of the form (x, 0). To find the x-intercept of a graph or equation, you can set y=0 and solve for x.
To find the x-intercept of the equation 3x + 5y = 9, we need to set y = 0 and solve for x.
So, we have:
3x + 5(0) = 9
3x = 9
x = 3
Therefore, the x-intercept of the equation 3x + 5y = 9 is (3,0), which means the point where the line intersects the x-axis is (3,0).
To verify, we can graph the equation and see that the point (3,0) is indeed on the x-axis.
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Compare to greatest or least 7/8 14/16
Answer:
The fraction 14/16 is greater than 7/8.
Step-by-step explanation:
50 3/5 ft subtract 48 1/3 =
The substraction of 50 3/5 ft and 48 1/3 can be expressed as34/15.
How can the substraction be determined?The concept that will be used here is substraction. One of the four operations used in mathematics, along with addition, multiplication, and division, is substraction. Removal of items from a collection is represented by the operation of subtraction. For instance, the adjacent image shows 5 2 peaches, which are 5 peaches with 2 peaches subtracted, for a total of 3 peaches.
50 3/5 ft - 48 1/3 =
this mixed numbers can be converted to fractions as
253/5 - 145/3
= 34/15
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Consider the following function.
f(x)= |x+5|, x>-5
Find the inverse function f-¹.
I
f-¹(x) =
State the domain and range of f. (Enter your answers using interval notation.)
domain
range
State the domain and range of f-1. (Enter your answers using interval notation.)
domain
range
Inverse function for the function f(x)= |x+5|, x>-5 is f⁻¹(x) = -5 ± x
What is inverse function?An inverse function or an anti function is defined as a function, which can reverse into another function. In simple words, if any function “f” takes x to y then, the inverse of “f” will take y to x. If the function is denoted by 'f' or 'F', then the inverse function is denoted by f-1 or F-1.
Given function,
f(x) = |x + 5| , x>-5
It can be written as
y = |x + 5|
Replacing x with y
x = |y + 5|
Solving for y
y + 5 = ± x
y = -5 ± x
Replacing y with f⁻¹(x)
f⁻¹(x) = -5 ± x
Hence, f⁻¹(x) = -5 ± x is the inverse function for function f(x)= |x+5|, x>-5
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Fill in the blank to complete the sentence below.
In a standard deck of 52-cards, there are 13 spades and 4 aces, and thus there are
(Type a whole number.)
cards are neither spades nor aces.
Answer: 35
Step-by-step explanation: 52-13-4
8. The ratio of x to y is 7 to 18. If the value of x is 49, then what is the value of y? (A) 25 (B) 56 (C) 90 (D) 96 (E) 126 100 (C)
Answer: B) 56
Step-by-step explanation:
[tex]x:y=7:18[/tex]
[tex]x=49[/tex]
find the value of [tex]y[/tex]
let, [tex]x^2[/tex] [tex]7a[/tex]
and let, [tex]y^2[/tex] [tex]8a[/tex]
A/Q
[tex]x=49[/tex]
[tex]7a=49[/tex], divide both sides by 7 to let the [tex]a[/tex] alone,
[tex]a=7[/tex]
///
[tex]y=8a[/tex], so that we now that [tex]a=7[/tex]
so, [tex]y=8*7[/tex]
[tex]y=56[/tex]
hope you've understanded...
Graph the following system of inequalities below and shade the feasible region.
y > -1
y≥ x²+ 1
(x-1)²+(y-1)² ≤ 16
(4marks)
The graph of the system of the equation y > -1, y≥ x²+ 1, and (x-1)²+(y-1)² ≤ 16 is attached with the feasible region of each part shaded
How to identify the graphs
The equation y > -1 is a horizontal line drawn at point y = -1 and shaded above the line because the sign is greater than. the line is dashed line line since the equation is not "greater than or equal to".
The equation y ≥ x²+ 1 is a parabolic equation
The equality sign attached to the greater than makes the line a solid line and because it is greater than the shading is inside the curve.
The equation (x - 1)² + (y - 1)² ≤ 16 is a equation of a circle
The equality sign attached to the greater than ("greater than or equal to") makes the line a solid line and because it is greater than the shading is inside the circle
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a lady sells brouses at 1500 ksh each. she make a profit of sh.150 shillings for each brouse how much does she pay for it
Answer: If the lady sells each brouse for 1500 KSH and makes a profit of 150 KSH for each brouse, then the cost price of the brouse is 1500 KSH - 150 KSH = 1350 KSH.
So, the lady pays 1350 KSH for each brouse.
Step-by-step explanation:
What is the first quartile of the data set represented by the box plot shown
below?
13 20 25
A. 25
B. 40
C. 20
D. 13
40
48
The first quartile of the data set represented by the box plot shown in the figure is 20 option 'C' is correct.
What is the first quartile of the data set?
The lower quartile, or first quartile (Q1), is the value under which 25% of data points are found when they are arranged in increasing order. The upper quartile, or third quartile (Q3), is the value under which 75% of data points are found when arranged in increasing order.
Since we have given a box and whisker plot.
As we know about the box and whisker method that :
Left most part of the box represents the first quartile and the rightmost part of the box represents the third quartile.
And the middle value is for median
so, we can conclude that
First quartile = 20
Third quartile = 40
Median = 25
Hence, the first quartile of the data set represented by the box plot shown in the figure is 20 option 'C' is correct.
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Below is a square based pyramid. Calculate the length of side I
The slant height of the square base pyramid is calculated as l = 17 using the Pythagoras rule.
What is the Pythagoras ruleThe Pythagoras rule states that in a right-angled triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides.
we can observe the right triangle with hypotenuse l, height = 15, and base = 8 {half the pyramid base of 16}
the slant height is calculated as follows:
l² = 15² + 8²
l² = 225 + 64
l² = 289
l = √289 {take square root of both sides}
l = 17.
Therefore, the slant height of the square base pyramid is calculated as l = 17 using the Pythagoras rule.
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The regular price of an Apple Watch is $199. The watch is on sale for 15% off. Which expression is equal to the sale price in dollars, of the Apple Watch
Answer: $169.15
Step-by-step explanation: 15 percent of 199 is 29.85, and 199-29.85 is 169.15
three more than product of 15 and a number n is 153. wright an equation that describes this situation
The equation that describes this situation is, 3 + 15n = 153
What is an Equation ?An equation is a mathematical term, which indicates that the value of two algebraic expressions are equal. There are various parts of an equation which are, coefficients, variables, constants, terms, operators, expressions, and equal to sign.
Given that,
Three more than product of 15,
And a number n is 153.
More than = + (addition)
Product = x (multiplication)
Product of 15 and n = 15 x n = 15n
Therefore, the equation is 3 + 15n = 153.
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Note that JKLM has vertices J(1, 3), K(-4,2), L(-1,-5), and M(4,-4). Complete the following to determine if JKLM is a parallelogram.
Opposite sides JK and ML are equal and parallel (with slopes of -1/5 and 1/5, respectively), and opposite sides KL and MJ are equal and parallel (with slopes of 7/3 or 7). /3) We can conclude that JKLM is a parallelogram.
How to determine a parallelogram?To determine if JKLM is a parallelogram, we need to check if its opposite sides are parallel and equal in length.
First, we can find the lengths of the sides using the distance formula:
JK = [tex]\sqrt{(1 - (-4))^2 + (3 - 2)^2} = \sqrt{25} = 5[/tex]
KL = [tex]\sqrt{(-4 - (-1))^2 + (2 - (-5))^2} = \sqrt{58}[/tex]
LM = [tex]\sqrt{(-1 - 4)^2 + (-5 - (-4))^2} = \sqrt{26}[/tex]
MJ = [tex]\sqrt{(4 - 1)^2 + (-4 - 3)^2} = \sqrt{50}[/tex]
Next, we can find the slopes of the sides using the slope formula:
Slope of JK = (2 - 3)/(-4 - 1) = -1/5
Slope of KL = (-5 - 2)/(-1 - (-4)) = 7/3
Slope of LM = (-4 - (-5))/(4 - (-1)) = 1/5
Slope of MJ = (3 - (-4))/(1 - 4) = 7/3
Since opposite sides, JK and ML have the same length and are parallel (they have slopes of -1/5 and 1/5, respectively), and opposite sides KL and MJ have the same length and are parallel (they have slopes of 7/3 and 7/3, respectively), we can conclude that JKLM is a parallelogram.
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Help please, thank you and have a wonderful day
Answer:
In order in which the boxes appear
[tex]\boxed{cubic}\\\\\boxed{3}\\\\\boxed{8}\\\\\boxed{x^3}\\\\\boxed{1}[/tex]
Step-by-step explanation:
Do not know the answer choices look like but this should fit
The polynomial has degree 3, therefore it is a cubic polynomial
There are 3 terms
The constant term is 8
The leading term is x³
and the leading coefficient is 1
Answer:
Cubic,3,8,x^3,1
Step-by-step explanation:
The polynomial is :
-x/10+x^3+8
The above polynomial, it contains 3 terms i.e, -x/10,x^3,8. The leading term is x^3 since it has power 3 so it is a cubic polynomial and its leading coefficient is 1.
The expression represents a cubic polynomial with 3 terms. The constant term is 8, the leading term is x^3, and the leading coefficient is 1.
6. Application Juanita, who is 1.82 meters tall, wants to
find the height of a tree in her backyard. From the
tree's base, she walks 12.20 meters along the tree's
shadow to a position where the end of her shadow
exactly overlaps the end of the tree's shadow. She is
now 6.10 meters from the end of the shadows. How
tall is the tree?
The height of tree is 9.9372.
What is the congruent triangle?Two triangles are said to be congruent if the length of the sides is equal, a measure of the angles are equal and they can be superimposed.
ΔABC ~ ΔDEF only if ratio of two sides of ΔABC and corresponding two sides of ΔDEF is equal and the angle included in both sides are congruent.
Given;
Juanita is 1.82 meters tall
From the tree's base, she walks 12.20 meters along the tree's shadow to a position where the end of her shadow.
She is now 6.10 meters from the end of the shadows.
Now,
Let, h be the height of the tree;
Here, ΔABC ~ ΔADE,
So, DE/BC = AD/AB
h/1.82 = (6.10 + 12.20)/6.10
h/1.82= 18.30/6.10
h=33.306/6.10
h=5.46
h = 1.82*5.46
= 9.9372
Therefore, by congruency of triangle the answer will be 9.9372.
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The weight of a small Starbucks coffee is a normally distributed random variable with a mean of 400 grams and a standard deviation of 20grams. Find the weight that corresponds to each event.
(Use Excel or Appendix C to calculate the z-value. Round your final answers to 2 decimal places.)
a. Highest 20 percent
b. Middle 60 percent to
c. Highest 80 percent
d. Lowest 15 percent.
Answer:
a. To find the weight corresponding to the highest 20 percent of coffees, we need to find the z-score that corresponds to the 0.8 cumulative probability.
Using a standard normal table or a calculator that can compute z-scores, we can find that the z-score corresponding to a cumulative probability of 0.8 is 0.8416.
Next, we use the z-score formula to find the weight:
Weight = Mean + (z-score * Standard Deviation)
Weight = 400 + (0.8416 * 20) = 448.32 g
So, the weight corresponding to the highest 20 percent of coffees is approximately 448.32 g.
b. To find the weight corresponding to the middle 60 percent of coffees, we need to find the z-scores that correspond to the cumulative probabilities of 0.2 and 0.8.
Using a standard normal table or a calculator that can compute z-scores, we can find that the z-score corresponding to a cumulative probability of 0.2 is -0.8416, and the z-score corresponding to a cumulative probability of 0.8 is 0.8416.
Next, we use the z-score formula to find the weights:
Weight Lower Bound = Mean + (z-score * Standard Deviation)
Weight Lower Bound = 400 + (-0.8416 * 20) = 351.68 g
Weight Upper Bound = Mean + (z-score * Standard Deviation)
Weight Upper Bound = 400 + (0.8416 * 20) = 448.32 g
So, the weight corresponding to the middle 60 percent of coffees ranges from approximately 351.68 g to approximately 448.32 g.
c. To find the weight corresponding to the highest 80 percent of coffees, we use the same process as in (a) to find the z-score that corresponds to the cumulative probability of 0.8, which is 0.8416.
Next, we use the z-score formula to find the weight:
Weight = Mean + (z-score * Standard Deviation)
Weight = 400 + (0.8416 * 20) = 448.32 g
So, the weight corresponding to the highest 80 percent of coffees is approximately 448.32 g.
d. To find the weight corresponding to the lowest 15 percent of coffees, we need to find the z-score that corresponds to the cumulative probability of 0.15.
Using a standard normal table or a calculator that can compute z-scores, we can find that the z-score corresponding to a cumulative probability of 0.15 is -0.9332.
Next, we use the z-score formula to find the weight:
Weight = Mean + (z-score * Standard Deviation)
Weight = 400 + (-0.9332 * 20) = 346.64 g
So, the weight corresponding to the lowest 15 percent of coffees is approximately 346.64 g.
Step-by-step explanation:
PLS HELPP
louise has planted 96 shrubs. the garden centre guaranteed her that at least 7/8 of the shrubs would survive. What is the minimum number od shrubs that should survive?
Answer:
84
What is a fraction?A fraction is a fragment of a whole number, used to define parts of a whole. The whole can be a whole object, or many different objects. The number at the top of the line is called the numerator, whereas the bottom is called the denominator.
We can first convert 96 into a fraction.
96 = [tex]\frac{96}{1}[/tex]Now that we know this, we can solve for the number of shrubs. If we know that at least [tex]\frac{7}{8}[/tex] of the shrubs should survive, we can use an equation that looks like this:
([tex]\frac{7}{8}[/tex]) × ([tex]\frac{96}{1}[/tex]) =?Solving the equation:
([tex]\frac{7}{8}[/tex]) × ([tex]\frac{96}{1}[/tex]) = 84Therefore, the minimum number of shrubs that should survive is 84.
How can using a 'Polygon Family Tree' help you to classify 2D figures into a hierarchy of sets and subsets?
Closed, two-dimensional shapes known as polygons are created by three or more-line segments that only meet at their ends.
What are plane figures?A figure that totally resides in one plane is referred to as a plane figure or a two-dimensional figure. Two-dimensional figures are drawn when you sketch, whether by hand or with a computer programme. Two-dimensional models of actual objects can be found in blueprints.
Closed, two-dimensional shapes known as polygons are created by three or more-line segments that only meet at their ends.
How do you classify 2D figures?Circles, triangles, squares, rectangles, pentagons, quadrilaterals, hexagons, octagons, and other basic 2D shapes include these. All shapes—aside from the circle—are categorized as polygons because they have sides. Regular polygons are those with equal sides and angles on all of their faces.
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Rob loves to run. He set a goal to run more than 390 miles this year.
To date, he has run 127 miles. If he begins to run 18 miles per week,
how long will it take Rob to reach his goal?
Write a two-step inequality, using the values provided in the problem,
that represents this situation. Use x as the variable.
The linear inequality to represent given situation will be 127+18x≥390 where x=no. of weeks and he will take 14.6 weeks to reach his goal.
What is a linear inequality, exactly?
In mathematics, an inequality is a mathematical statement that does not have equal sides. In mathematics, an inequality occurs when a connection results in a non-equal comparison of two expressions or two numbers. In the statement, any of the inequality symbols, such as greater than symbol (>), less than symbol (<), greater than or equal to symbol (≥), less than or equal to symbol (≤), or not equal to symbol (≠), can be used to replace the equal sign "=". Inequalities are grouped into three forms in mathematics: polynomial inequalities, rational inequalities, and absolute value inequalities.
The symbols " <and >" represent severe disparities, whereas " ≤ and ≥ " represent slack inequalities. A linear inequality resembles a linear equation, but the formula is different.
Now,
Total miles to run=390 mile
He already ran=127 mile
Distance left to run=390-127
=263 mile
Rate of running=18 miles/ week
weeks taken to complete 263 miles=263/18
=14.6 weeks
and given situation can be represented by inequality 127+18x≥390 where x=no. of weeks.
Hence,
The linear inequality to represent given situation will be 127+18x≥390 and he will take 14.6 weeks to reach his goal.
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4. Reginald created a mosaic from 6" square tiles.
If the completed mosaic was 2 feet by 3 feet, how
many square tiles did he use?
Reginald used 2 square tiles to make the mosaic
What is an equation?An equation is an expression that shows how numbers and variables are linked together using mathematical operations such as addition, subtraction, multiplication and division.
The area is the product of the length and width. Hence:
Area = length * width
Reginald created a mosaic from 6" square tiles. Therefore:
Area of tiles = 6 in * 6 in = 36 in²
If the completed mosaic was 2 feet by 3 feet, Hence:
Area of mosaic = 2 feet * 3 feet = 6 feet
1 feet = 12 in
6 feet = 6 feet * 12 in per feet = 72 in²
Number of tiles = Area of mosaic / area of tiles = 72 in² / 36 in² = 2
Reginald used 2 tiles
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How do I do these questions ??