The expression that uses the commutative property of addition and the associative property of multiplication to rewrite the expression 3 (28) +7 is 7+(3-2).8
The commutative property of addition states that a change in the order of the numbers being added does not affect the sum. We can define commutative property of addition as adding the numbers in any order will give the same answer.
a + b = b + a
3(2x8) + 7 = 7 + 3(2x8)
The associative property of multiplication says that while multiplying three numbers, regardless of the way the numbers are grouped, the end result will always be the same.
a(b x c) = (a x b) c
7 + 3(2x8) = 7 + (3.2)8
Therefore, the expression that uses the commutative property of addition and the associative property of multiplication to rewrite the expression 3 (28) +7 is 7+(3-2).8
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is the ordered pair (2, 4) a solution to the following equation
5x + 2y = 23?
Answer: Can't Say for sure but probably it is so I would Say Yes.
Annie's mother asked Annie to go buy oranges, dog food, and bug spray. Each square's side length is 1 block. How many blocks will Annie have to walk
in all if she visits the fruit stand, the pet store, and the supermarket, in that order, before returning home?
A. 14 blocks
B. 18 blocks
C. 20 blocks
D. 32 blocks
We can learn from the graph that ANNIE is required to walk 14 blocks.
What is a graph?a diagram that shows how a variable varies in relation to one or more other variables (such as a collection of points, lines, line segments, curves, or regions).: a grouping of all points whose coordinates meet a specific relation (such as a function): a group of edges and vertices connecting pairs of verticesHow to solve a graph.-
TO GRAPHICALLY SOLVE A SYSTEM OF LINEAR EQUATIONSThe first equation is graphed.Using the same rectangular coordinate system, graph the second equation.Identify whether the lines are parallel, intersect, or are one and the same line.Determine the system's remedy. Find the intersection if the lines do indeed meet.acc to the question-
fruit vendor=(-3,7)
pet store-=(-1,6)
supermarket=(1,5)
annie's house=(1,4)
Hence,We can learn from the graph that ANNIE is required to walk 14 blocks.
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Find the slope and reduce.
P=(2, 3) Q=(9, 7)
Answer:
[tex]\frac{4}{7}[/tex]
Step-by-step explanation:
Slope = m
m = [tex]\frac{y_{2}- y_{1}}{x_{2}-x_{1}}[/tex]
m = [tex]\frac{7-3}{9-2}[/tex] = [tex]\frac{4}{7}[/tex]
Given: Gross sales, $170,000; sales returns and allowances, $9,000; beginning inventory, $8,000; net purchases, $18,000; ending inventory, $5,000; and operating expenses, $56,000. a. Calculate net sales. b. Calculate cost of merchandise (goods) sold. c. Calculate gross profit from sales. d. Calculate net income.
The calculation of the following income statement figures are as follows:
a) Net Sales are $161,000.b) Cost of goods sold is $21,000.c) The gross profit from sales is $140,000.d) The net income is $84,000.What is the income statement?The income statement is the first financial statement that summarizes the revenues and expenses for a business period to arrive at different profit points.
One of the profit points is the gross profit, which is the difference between the sales revenue and the cost of goods sold.
The other profit points include the operating income, income before tax, and net income.
Income StatementGross sales $170,000
Sales returns and allowances 9,000
Net Sales $161,000
Cost of goods sold:
Beginning inventory $8,000
Net purchases 18,000
Ending inventory (5,000) $21,000
Gross profit $140,000
Operating expenses (56,000)
Net Income $84,000
Thus, the calculation of the income statement figures shows a net income of $84,000.
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A plane car fly 300 miles in the same time as it takes a car to go 120 miles. If the car travels 90 mph
slower than the plane, find the speed of the plane.
Using r as your variable to represent the speed of the plane in miles per hour, write an equation
using the information above that can be solved to find the answer to this problem.
Equation:____?
The plane flies___?
The plane flies at a speed of 150mph
A plane can fly 300 miles in the same time as it takes a car to go 120 miles
Let the time taken be t
Let the speed of the plane be x
the car travels 90 mph slower than the plane,
Speed of the car is x - 90
Speed = distance / time
Time taken by plane = time taken by car
300/ x = 120/x - 90
300(x - 90) = 120x
300x - 27000 = 120x
300x - 120x = 27000
180x = 27000
x = 27000/180
x = 150
Therefore, the plane flies at a speed of 150mph
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what is the place value of digit 4 in 405799
What is the place value of digit 4 in 405,799:
4: one hundred thousandth place
0: ten thousandth place
5: one thousandth place
7: hundredth place
9: tens place
9: ones place
Answer:
100,000 thousand
Step-by-step explanation:
The number 405799 has six digits, and each digit has a specific place value based on its position within the number. The rightmost digit, which is 9, is in the one's place. Moving to the left, the next digit is 9 again, but this time it is in the ten's place. Continuing left, the next digit is 7, which is in the hundred's place. The digit 5 is in the thousand's place, and the digit 0 is in the ten thousand's place. Finally, the digit 4 is in the hundred thousand's place, so the place value of the digit 4 in 405799 is 100,000.
What is the y intercept of the line -3x+2y=6 ?
O
-3
-2
2
3
Answer:
positive 3
Step-by-step explanation:
Steps:
1. first you must get y by itself/isolate it to one side of the equation to get it in the format of y = mx + b
-3x + 2y = 6
+3x +3x add 3x to both sides to get 2y by itself
____________
2y = 3x + 6 -3x+3x cancels out and becomes 0
-------------------------
2 divides both sides by 2 to get y by itself
y = (3/2)x + 3
2. Looking at the equation, we know that 3 is the y-intercept because the "b" in the slope-intercept equation is always the y-intercept.
Which number can each term of the equation be multiplied by to eliminate the fractions before solving?
6-3x+=x+5
4
2
6
12
10
If you multiply by 12 you will get rid of all your fractions.
What are linear equations?In mathematics, a linear equation is one that may be written in the form where the variables are alphabets, and the coefficients are frequently real integers. An algebraic equation with simply a constant and a first-order (linear) term, such as y=mx+b, where m is the slope and b is the y-intercept, is known as a linear equation.
It is rather simple to locate both intercepts when an equation is stated in this way (x and y).
The given linear equation is
6 - (3/4)x + (1/3) = (1/2)x + 5
In this equation the fractions are
(3/4), (1/3) and (1/2)
Take the LCM of 4, 3, and 2
LCM(4, 3, 2) = 12
So, if we multiply the equation with the number 12 we can eliminate the fractions.
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A famous leaning tower was originally 180.5 feet high At a distance of 125 feet from the base of the tower, the angle of olevation to the top of the tower is found to be 56° Find ZRPQ indicated in the figure. Also find the perpendicular distance from R to PQ
The perpendicular distance from R to PQ is 346 feet.
What are the trigonometric functions?
The right-angled triangle's angle and the ratio of its two side lengths are related by the trigonometric functions, which are actual functions. They are extensively employed in all fields of geometry-related study, including geodesy, solid mechanics, celestial mechanics, and many others.
We have,
consider the sides of leaning tower are,
opposite side of the angle 56° (x) = 180.5 feet.
Adjacent side of the angle 56° (y) = 125 feet.
We know,
[tex]tan\theta =\frac{ opposite \ side}{ adjacent \ side} = \frac{x}{y}[/tex]
[tex]\theta = \ tan^{-1} \left(\frac{ opposite \ side}{ adjacent \ side} \right)[/tex]
The angle of elevation is [tex]\theta = \ tan^{-1} \left(\frac{180.5 }{125} \right)[/tex]
θ = 56°
The perpendicular distance from R to PQ is RQ
[tex]sin\theta = \frac{opposite side}{hypotanous} = \frac{180.5}{y}[/tex]
sin(56) = 180.5/PQ
RQ = 180.5/sin(56)
RQ = - 346.08
RQ = 346 (distance never be negative),
Hence, the perpendicular distance from R to PQ is 346 feet.
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The base of a triangle is one half of its height. If the area of the triangle is 196 square millimeters,
find its base and height.
Step-by-step explanation:
the area of a triangle is
base × height / 2
in our case
base × height / 2 = 196 mm²
base × height = 392
base = height / 2
so, using that in our main equation :
(height / 2) × height = 392
height² = 784
height = sqrt(784) = 28 mm
base = height / 2 = 28/2 = 14 mm
why is not inverse function??
[tex]f(x) = x {}^{2} - 9[/tex]
The equation formed when x is the subject of the function f(x) = x² - 9, has two values of output for each input value to the function, therefore;
f(x) = x² - 9 does not have an inverse.
What is the inverse of a function?An inverse of a function is an anti function that reverses the values in the output into the input values thereby undoing the operations performed by the function.
A function f has an inverse if and only if it is bijective, such that there is a one to one correspondence between the set of the input elements and the set of the output elements
A function that has an inverse is said to be a bijective or invertible function or a function with one-to-one correspondence
The function in the question f(x) = x² - 9
Making x the subject of the function to verify if it has an inverse gives;
x² = f(x) + 9
[tex]x = \pm\sqrt{f(x) +9}[/tex]
Putting x = f⁻¹(x) gives;
[tex]f^{-1}(x) = \pm\sqrt{x +9}[/tex]
Therefore, each value of x gives two values of f⁻¹(x), such that the set of the output of inverse function, f⁻¹(x) does not have a one-to-one correspondence with the set of values of x.
The function f(x) = x² - 9 is not invertible and therefore does not have an inverse function.
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a recipe for fizzy grape juice, the ratio of cups of sparkling water to cups of grape
ice concentrate is 3 to 1.
a. Find two more ratios of cups of sparkling water to cups of juice concentrate that
would make a mixture that tastes the same as this recipe.
b. Describe another mixture of sparkling water and grape juice that would taste
different than this recipe.
Lesson 3 Practice Problem
Answer:
3:2
Step-by-step explanation:
You need to find two more equivalent ratio of cups of sparkling water to cups of juice concentrate that would make a mixture that tastes the same as this recipe.
Another mixture of sparkling water and grape juice that would taste different than this recipe is 3 : 2 of cups of sparkling water to cups of juice concentrate
Ratio of cups of sparkling water to cups of grape juice concentrate is 3 to 1
ratio of cups of sparkling water : cups of grape juice concentrate = 3 : 1
Equivalent ratio to 3 : 1 are
6 : 2,
9 : 3,
12 : 4
15 : 5
21 : 7
Non equivalent ratio of 3 : 1 are
3 : 2
4 : 2
5 : 5
6 : 4
Therefore, another mixture of sparkling water and grape juice that would taste different than this recipe is 3 : 2 of cups of sparkling water to cups of juice concentrate
Cp when Sp is 5625 and profit is 25%
4500 is the Cost price.
What do you mean by price at cost?
Cost price is the total sum of money that it costs a manufacturer to make a particular good or offer a particular service.The cost price of an item is the price at which it is produced or the price at which it is purchased. C.P. stands for "cost price." Selling Price: A product's selling price is the cost at which it is sold.SP = 5625
Profit = 25%
CP = ?
CP = 5625/125 * 100
= 45 * 100
= 4500
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solve the equation 619m + 313m = 2813for m.
Answer:
2813
m = ----------
932
Step-by-step explanation:
619m + 313m = 2813
932m = 2813
÷932 ÷932
2813
m = ----------
932
I hope this helps!
Answer:
[tex]m=\frac{2813}{932}[/tex]
Step-by-step explanation:
Combine like terms:
[tex]{619m}+{313m}=2813{932m}=2813[/tex]
Divide both sides by the same factor:
932m=2813
[tex]\frac{932m}{932}}=\frac{2813}{932}}\\[/tex]
Simplify
Cancel terms that are in both the numerator and denominator
[tex]m=\frac{2813}{932}[/tex]
Question 2 (1 point)
Determine the sequence and the common difference.
9, 14, 19, 24
Answer:
5 is added each time. the next numbers are, 29, 34 and 39
Step-by-step explanation:
9+5 = 14 14+5=19 19+5=24
What expression has the same value as 2(5x + 2) - (3y)2x – 4x
Answer:
10x+6xy+4
Step-by-step explanation:
2(5x+2)-(3y) 2x-4x
By removing the bracket
10x+4-6xy+12xy
10x+4+6xy
10x+6xy+4
What's the area of a rectangle with side lengths of 6/8 metter and 4/10 metter?
Answer:
3/10 meters^2
Step-by-step explanation:
we multiply length by width to get are
6/8x4/10
6*4/8*10
24/80
3/10
Hopes this helps please mark brainliest
Answer: Hi the answer to that would be 3/10.
Step-by-step explanation: The first one explains the formula and the second one shows my work. I hope this helps!!!
(7x-7)
63°
(3x +45)
(9-4)
Find x and y
Answer:
x+7=4/3x-1/3 One solution was found : x = 22 Rearrange: Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation : ... 3x-9/4x-12: correct answer right here
Step-by-step explanation:
Timothy plans to add a railing parallel to a flight of stairs that goes down to the basement in his house. Each step has the dimensions shown in the sketch.
What will be the length of the railing?
The length of the railing is 105.81 inches.
Given,
The stair has 7 steps
The rise of each step = 8.5 inches
The tread of each step = 12.5 inches
Slope of each step = x
We have to find the length of the railing.
Length of railing = 7x
Then,
Slope of step, x can be determined using Pythagorean theorem.
Let rise be the height of the right angled triangle and tread be the base of the triangle
Then,
Hypotenuse= Slope, x = [tex]\sqrt{Rise^{2} + Tread^{2} }[/tex]
x = [tex]\sqrt{8.5^{2}+ 12.5^{2} }[/tex]
x = [tex]\sqrt{72.25 + 156.25}[/tex]
x = √228.5
x = 15.12 inches
That is,
The slope, x of one step is 15.12 inches
Now,
Length of the railing = 7x = 7 × 15.12 = 105.81 inches
Therefore,
The length of the railing is 105.81 inches.
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Captain scores 120 points on Space Invaders. Tyger scores 10% more points than Captain. How many points does Tyger score?
The number of points scored by Tyger will be 132 points.
What is the number of points?From the information, Captain scores 120 points on Space Invaders. Tyger scores 10% more points than Captain.
Therefore, the number of points scored by Tyger will be:
= Points scored by Captain + (Percentage × Captain point)
= 120 + (10% × 120)
= 120 + 12
= 132
Tyger scored 132 points.
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The number of points scored by Tyger will be 132 points.
What is the number of points?From the information, Captain scores 120 points on Space Invaders. Tyger scores 10% more points than Captain.
Therefore, the number of points scored by Tyger will be:
= Points scored by Captain + (Percentage × Captain point)
= 120 + (10% × 120)
= 120 + 12
= 132
Tyger scored 132 points.
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h.
Week 5
Day 5
Date: 21/10/2022
A bag of garri weighs 12kg 104g. Find the weight of 6
such bags.
Answer:
72.624 kg
Step-by-step explanation:
1g = 0.001 kg
104g = 0.104kg
weight of 1 bag = 12.104kg
weight of 6 bags = 12.104 x 6
weight of 6 bags = 72.624kg
some help me pls with this
Solve the equation: r - 535 = 175
Step-by-step explanation:
r - 535 = 175
r = 175 + 535 = 710
Answer:
take - 535 to the other side (over equal to side)
which makes it +535
r = 175 + 535
r = 710
Use the Product Rule of Logarithms to write the completely expanded expression equivalent to log4 (6(5 + 2x)). Make sure
to use parenthesis around your logarithm functions log(x + y).
[tex]log_{4}(2) + log_{4}(3)+ log_{4}(5+2x)[/tex] is the completely expanded logarithmic expression .
What are logarithms ?Logarithm, an exponent or power that must be raised to obtain a particular number. Mathematically, if bx = n then x = logb n then x is the logarithm of n to base b. Example: 23 = 8; so 3 is the base 2 logarithm of 8, or 3 = log2 8.
The most common types of logarithms are the base 10 common logarithm, the base 2 binary logarithm, and the base e ≈ 2.71828 natural logarithm.
Calculationsthe product rule for logarithms is
[tex]log_{b}(MN) = log_{b}(M) + log_{b}(N)[/tex] for b > 0
now ,
[tex]log_{4}(6(5 + 2x)) \\\\log_{4}(6) + log_{4}(5 + 2x)\\ \\ log_{4}(2.3) + log_{4}(5 + 2x) \\\\ log_{4}(2) + log_{4}(3)+ log_{4}(5 +2x)[/tex]
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i need someone to help me with my math test 24 questions please
Answer:
Add the picturess!!!!!
Step-by-step explanation:
Select the correct answer.
Given that a function, h, has a domain of -3 ≤ x ≤ 11 and a range of 1 ≤ h(x) ≤ 25 and that h(8) = 19 and h(-2) = 2, select the statement that could be true for h.
A.
h(2) = 16
B.
h(-3) = -1
C.
h(8) = 21
D.
h(13) = 18
Option A. The statement that can be said to be true for h is h(2) = 16
How to get the domainIf we look at the domain and range, we can rule out some straight away.
For h - 3 = -1
this is outside of the range of the such that -1 ∉ 1 ≤ hx ≤ 25
When h is 13 = 18
This is also outside of the domain such that 13 ∉ -3 ≤ x ≤ 11
When h is 8 = 21
there is going to be a contradiction with what the question has stated earlier. This is because we are told that h(8) = 19
Therefore on h(2) = 16
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Given that f(x)=x+4 and g (x)=3x/x+1 (1) determine the value of f(9)
The value of f(9) is 13
The function f(x) = x + 4
The function g(x) = 3x / x+1
The function is the mathematical statement that show the relationship between one variable and another variable. If one variable is independent variable and another variable will be dependent variable. Also the function is the equation that shows the relationship between the input and output.
The function
f(x) = x + 4
We have to find the value of f(9)
We have to substitute the value of x = 9 in the function
f(9) = 9 + 4
Add the terms
f(9) = 13
Hence, the value of f(9) is 13
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A restaurant manager recorded the number of people in different age groups who attended their food festival. They created the following histogram:
Histogram with title Food Festival Participants, horizontal axis labeled Age Group (year) with bins 0 to 19, 20 to 39, 40 to 59, and 60 to 79, and vertical axis labeled Number of People with values from 0 to 60 at intervals of 10. The first bin goes to 20, the second goes to 40, the third goes to 60, and the last goes to 50.
What percentage of the participants are ages 40 to 59? Round to the nearest whole percent.
20%
35%
60%
100%
According to the histogram, the percentage of participants aged 40 to 59, who attended the restaurant's food festival, is 35%.
What is a histogram?A histogram approximately represents a distribution of grouped data with numerical values.
A histogram uses rectangular bars to show the frequency of data items in successive numerical intervals of equal sizes.
Age Group (year) Number of People
0 to 19 20
20 to 39 40
40 to 59 60
60 to 79 50
Total 170
Percentage of ages 40 to 59 = 60/170 x 100 = 35.29%
Thus, using the histogram, we can assure the restaurant manager that 35% of the festival participants are between 40 and 59 years old.
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which function has the greater y-intercept?
y=-x+6 x: -1, 0, 1, 2, 3
y: 7,6,5,4,3
y=2x-3 x: -1, 0, 1, 2, 3
y: -5, -3, -1, 1, 3
By evaluating in x = 0, we can see that the function with the greater y-intercept is the first one:
y=-x+6
Which function has the greater y-intercept?
For any function y = f(x), we define the y-intercept as the value that y takes when we evaluate the function in x = 0.
For the first function:
y = -x + 6
The y-intercept is:
y = -0 + 6 = 6
While for the second function:
y = 2x - 3
Evaluating in 0 we get:
y = 2*0 - 3 = -3
So the y-intercept of the first function is 6, and the one of the second function is -3.
Then the first function has the greater y-intercept.
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Here's a brain teaser.
(I already know the answer)
1=5
2=10
3=15
4=20
5=?
Answer:
5 = 1
or
5 = 25
Step-by-step explanation:
I've seen two answers to this.
1. Since we are told 1 = 5, then 5 = 1.
One answer is 1 = 5
2. Since each number on the right is 5 times the number on the left, then 25 corresponds to 5, and 5 = 25.
Answer: 5=1 (The correct answer) 5=25 (The answer that makes sense but is not correct).
Step-by-step explanation:
Explanation for answer 1: It say's that 1 = 5.
Explanation for answer 2: If we follow the pattern of adding 5 each time we go up a number then 5 would equal 25.
Find two z values so that the middle 67% of the area is bounded by them.
The two z values that the middle 67% of the area is bounded by them are -3.999 and 3.999.
What is a standard normal distribution?In all continuous probability distributions, it is possible to calculate the percentiles, which are defined as the value of the random variable that leaves an area equal to the percentile to the left of the distribution. When it comes to a central percentile, the area is distributed and the percentile is determined using a table of values or technology.
The area between the two boundaries is 0.67and the remaining area is 0.33 (= 1-0.56) , which is to the left of it.
Look into the z table to find the area between z=-x and mean and z=x and mean. According to z score table z=0.44 has 0.67 of the area to the left of (below) it. That means z=-0.44 has 0.67 of the area to the right of (above) it.
Therefore, the two z values are 0.44 and -0.44.
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The two z values that the middle 67% of the area is bounded by them are -3.999 and 3.999.
What is a standard normal distribution?In all continuous probability distributions, it is possible to calculate the percentiles, which are defined as the value of the random variable that leaves an area equal to the percentile to the left of the distribution. When it comes to a central percentile, the area is distributed and the percentile is determined using a table of values or technology.
The area between the two boundaries is 0.67and the remaining area is 0.33 (= 1-0.56) , which is to the left of it.
Look into the z table to find the area between z=-x and mean and z=x and mean. According to z score table z=0.44 has 0.67 of the area to the left of (below) it. That means z=-0.44 has 0.67 of the area to the right of (above) it.
Therefore, the two z values are 0.44 and -0.44.
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