An expression for the combined total dollar Josh earned this month is X = 15t + 13(95 - t).
What is a mathematical expression?A mathematical expression is a statement using a combination of numbers, variables, and mathematical operands.
Mathematical expressions may also use the equal symbol (=) to show that the two expressions are equal. Sometimes, the inequality signs are used when two expressions are not equivalent.
The pay rate per hour as a tutor = $15
The pay rate per hour as a waiter = $13
The combined total hours worked for the month = 95 hours
Let t = the number of hours worked as a tutor
Let X = Josh's total dollars earned for the month.
Josh's total earnings as a tutor for the month, A = 15t
Josh's total earnings as a waiter for the month, B = 13(95 - t)
The combined total dollar Josh earned this month, X = A + B
X = 15t+ 13(95 - t).
Thus, the total earnings by Josh for this month can be expressed as X = 15t+ 13(95 - t).
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11 Evaluate d-fif d = 7 and f = -15.
Answer:
22
Step-by-step explanation:
= 7 − (−15)
= 7 + 15
= 22
owen made a scale drawing of a city. in real life a neighboorhood park is 170 yards long. it is 17 inches long innthe drawing. what scale did owen use for the drawing
1 inch : ____ yards
Answer:
1 inch: 10 yards
Step-by-step explanation:
170/17 = 10
Divide the actual scale by the drawn scale to find how many yards is represented by an inch.
Can someone please help me?
I will give brainliest
We can find the QS side that is missing by using the proportions (C) QS/SR = PO/OR.
What do we mean by proportions?A proportion is an equation that equalizes two ratios.You could, for instance, write the ratio as follows: 1: 3 in the case of 1 boy and 3 girls (for every one boy there are 3 girls)The proportion formula is used to determine whether two ratios or fractions are equal.We can find the missing value by dividing the given values.The proportion formula can also be written as a: B::C:D = a/b = c/d, where a and d are the extreme terms and b and c are the mean terms.So, a proportion that is used to determine the QS's missing side
(A) QS/OR = PO/SR
Not possible, and the bases in the denominator have the wrong base positions.(B) PR/PO = QS/QR
Not possible because the order of the lines does not allow for the measurement of line length. QS/SR = PO/OR.(C) QS/SR = PO/OR
Given that the sides and base are both perfectly positioned within the fractions, this ratio can be used to determine the length of line QS.Therefore, we can find the QS side that is missing by using the proportions (C) QS/SR = PO/OR.
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Would you help me with 64 A, B , and C i
Given data:
Rate of decrease: 2.5 inches per hour
After 1.5 hours the candle is 11.5 in long
Let x be the number of hours
Let y be the length of the cangle remaining
Linear equation:
[tex]\begin{gathered} y=mx+b \\ \\ m=rate\text{ of change} \\ b=initial\text{ value} \\ \\ \\ y=-2.5x+b \end{gathered}[/tex]Use given data to find b: After 1.5 hours the candle is 11.5 in long
x=1.5
y=11.5
[tex]\begin{gathered} 11.5=-2.5(1.5)+b \\ 11.5=-3.75+b \\ 11.5+3.75=b \\ b=15.25 \end{gathered}[/tex]a. Formula:
[tex]y=-2.5x+15.25[/tex]b. The formula describes the remaining length (y) using two terms:
-2.5x: first term, this term includes the slope or rate of change (-2.5) and the variable (x)
15.25: second term it the initial lengh of the candle
c.
i. Evaluate the formula for x=3
[tex]\begin{gathered} y=-2.5(3)+15.25 \\ y=-7.5+15.25 \\ y=7.75 \end{gathered}[/tex]After 3 hours burned the length of the candle is 7.75 inches
ii. Evaluate the formula for x=5
[tex]\begin{gathered} y=-2.5(5)+15.25 \\ y=-12.5+15.25 \\ y=2.75 \end{gathered}[/tex]After 5 hours burned the length of the candle is 2.75inches
Start with 16÷8. Rewrite as an equivalent multiplication expression using the multiplicative inverse of 8.
The equivalent multiplication expression using the multiplicative inverse of 8 is 16 x ¹/₈ or 16 x 8⁻¹.
What is the multiplicative inverse?The multiplicative inverse is the reciprocal of a number.
The multiplicative inverse can be used to replace the division operation.
It is a simpler way that supplies the equivalent multiplication result in place of the division operation.
Check:
16÷8 = 2
Similarly, 16 x ¹/₈ = 2
Thus, instead of 16÷8, we can also use the multiplication inverse of 8 which is 16 x ¹/₈.
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determine x-axis and y-axis intercepts for -8x-6y=12
After determining the x and y axis, we get the x and y intercepts as 1.5 and -2.
Given the equation is -8x-6y=12
-6y=8x+12
y=-8x/6+12/6
y=-4x/3+2
To determine x intercept, set y=0
-4x/3+2=0
Multiply both sides of the equation by the common denominator.
-4x×3/3 + 2×3 = 0×3
Reduce the fraction.
-4x+6=0
Rearrange the variables to the left side of the equation.
-4x=-6
cancel - sign.
4x=6
x=6/4
x=3/2
Now, to determine y intercept, set x=0
-8x-6y=12
-8(0)-6y=12
-6y=12
y = -12/6
y = -2
Hence the x and y intercepts are 1.5 and -2 respectively.
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Stock on the new york stock exchange opened at 52$ on Monday morning. The table shows the store's value change for each day that week. What was the stock worth at the close of business on Friday?
SOLUTION:
To get the value of the stock at the close of business on Friday, we get the initial value and add the whole daily changes to it;
[tex]\begin{gathered} 52-2+1+3-1-4 \\ \\ =\text{ \$}49 \end{gathered}[/tex]Therefore, on the close of business on Friday, the stock was worth $49
Please please please help I’m dialing
Write another valid congruency statement:
Step-by-step explanation:
can you show me the format to get the answer to m/3 +4=7
can you show me the format to get the answer to m/3 +4=7
we have
[tex]\frac{m}{3}+4=7[/tex]solve for m
that means
isolate the variable m
so
step 1
subtract 4 both sides
[tex]\begin{gathered} \frac{m}{3}=7-4 \\ \frac{m}{3}=3 \end{gathered}[/tex]step 2
multiply by 3 both sides
[tex]\begin{gathered} m=3\cdot3 \\ m=9 \\ \\ \\ \end{gathered}[/tex]therefore
the answer is
m=9we have thatstep 1is equal to
m/3 +4-4=7-4
step 2is equal to
m/3=3
step 3is given
step 4is given
Part 2Let
n------> number of hours
y -----> the total charge
Remember that
The linear equation in slope intercept form is equal to
y=mx+b
where
m is the slope or unit rate
b is the y-intercept or initial value
In this problem
y=mn+b
where
m=$25 per hour
b=$50
so
y=25n+50
For y=$125
Find out the number of hours
substitute the value of y in the equation and solve for n
125=25n+50
25n=125-50
25n=75
n=3 hours
therefore
the answers are
the total charge's equation is (25n+50)
the number of hours are 3
Write an equation in slope-intercept form for the line with slope 4/3 and y-intercept 1.
Answer:
y = 4/3x + 1
Hope this helps :)
Step-by-step explanation:
The slope-intercept form is y = mx + b.
m = the slope which is 4/3
b = the y-intercept which is 1
So to substitute the numbers in, the final equation would be y = 4/3x + 1
(4x + 8)° find the value of each variable
what is the length of the marked portion of each line segment? Copy the segment onto your paper before finding the missing length. Assume that the entire line segment is sub divided into equal sections.
The length of the marked portion of line segment A is 25, B is 45 and C is 30.
What is line segment?
A line segment in geometry is a section of a straight line that is enclosed by two clearly defined end points and contains all of the points on the line that lie inside those endpoints. The distance between two ends of a line segment is its length. Half-open line segments contain exactly one of the endpoints while other end point is open, while closed line segments have both the endpoints closed. Open line segments do not contain any of the endpoints.
Calculation of line segment A,
75 ÷ 3 = 25
25 × 1 = 25
Therefore, the length of the marked portion of line segment A is 25
Calculation of line segment B,
75 ÷ 5 = 15
15 × 3 = 45
Therefore, the length of the marked portion of line segment B is 45
Calculation of line segment C,
50 ÷ 5 = 10
10 × 3 = 30
Therefore, the length of the marked portion of line segment C is 30
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a. If f(2)= 5, then the point __ is on the graph of f.
b. If (5,0) is on the graph of f, then f(5) =__
Answer:
a. (2, 5)
b. 0
Step-by-step explanation:
The function is y = f(x)
If we plug in a value for x, we should get a value for y and that (x, y) will be a point
a. We have x = 2 and y = f(2) = 5
So x = 2, y = 5 is a point otherwise written as (2, 5)
b. If y = 0, when x = 5 then f(5) = 0
three fifths of the t-shirt shop are blue. five eighths of those t-shirts are on sale. One third of the blue t-shirts that are eon sale are size medium. What fraction of the shop's t-shirts are blue t-shirts that are on sale and are size medium? explain
Fraction, A number that is stated mathematically as a quotient, where the numerator and denominator are divided. Both are integers in a simple fraction. A fraction appears in the numerator or denominator of a complex fraction. The numerator of a proper fraction is less than the denominator.
Blue t-shirts that are on sale and are in the medium size make up 1/8 of the speakers in the store.
Detailed explanation:Let T represent the quantity of T-shirts in the store.
In a store selling t-shirts, blue dominates by three to one.
3/5 of the blue T-shirts were worn.
These blue t-shirts, 5/8 of them, are on sale.
The amount of blue T-shirts for sale is equal to 5/8 × 3/5 T, or 3/8 T.
The majority of the blue t-shirts for sale are size medium,
The number of medium-sized blue t-shirts available for purchase is equal to 1/3 × 3/8 T = 1/8 T.
Blue t-shirts in size medium that are on sale make up 1/8 of the store's speakers.
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Between 9 pm and 6:36 am, the water level in a swimming pool decreased by 6/35 in. Assuming that the water level decreased at a constant rate, how much did the water level drop each hour?
First, we need to know the total hours from 9 pm to 6:36 am.
We have that from 9:00 pm to 6:00 am are 9 hours. We still have 36 minutes.
And
[tex]36\min \cdot\frac{1hour}{60\min }=0.6hour[/tex]Then, the total hours are 9.6 hours.
The water level decreased by 6/35 in. Then:
[tex]d=\frac{\frac{6}{35}in}{9.6\text{hour}}\Rightarrow d=0.01786in/\text{hour}[/tex]Then, the level decreased approximately 0.01786 in/hour at that period of time (the water level decreased at a constant rate).
A parabola is modeled with the equation x2 – 12x + 4y + 24 = 0. Which is the domain and range of the parabola?
D: (–∞, ∞); R: (–∞, 3]
D: (–∞, ∞); R: [3, ∞)
D: (–∞, 3]; R: (–∞, ∞)
D: [3, ∞); R: (–∞, ∞)
Answer:
first option
Step-by-step explanation:
[tex] {x}^{2} - 12x + 4y + 24 = 0[/tex]
[tex] {x}^{2} - 12x + 24 = - 4y[/tex]
[tex] - \frac{ {x}^{2} }{4} + 3x - 6 = y[/tex]
Now, we can find the domain and range, the easiest way first is to put this in vertex form
First, find the x coordinate of the vertex using
-b/2a,
[tex] \frac{ - 3}{2(( - 0.25))} = 6[/tex]
Now, plug in 6 into the original equation to obtain the y value of the vertex
[tex] - \frac{6 {}^{2} }{4} + 3(6) - 6 = - 9 + 18 - 6 = 3[/tex]
So our vertex is (6,3).
Next , we put this in vertex form.
[tex]a(x - h) {}^{2} + k[/tex]
where (h,k) is the vertex
and a is the leading coefficient
so our quadratic in vertex form is
[tex] - \frac{1}{4} (x - 6) {}^{2} + 3[/tex]
Part 3: Domain and Range.
The domain of any quadratic(unless we are doing a real world example with a variable that can not be negative like time, objects,etc) is always all real numbers.
So the domain is (-oo,oo)
Since our a is negative, the range of our parabola is (-oo,3]
The correct answer is the first option
Solve for b and graph the solution.
5=1b-51
Answer:
b = 56
Step-by-step explanation:
Answer:B =46
Step-by-step explanation:
What is the value of x in the equation x-2/3 + 1/6 = 5/6
The value of x in the equation (x - 2)/3 + 1/6 = 5/6 is: x = 4
How to Solve an Equation?To solve a given equation, find the value of the variable in the equation by isolating the variable to one side using the necessary properties of equality.
Given the equation, (x - 2)/3 + 1/6 = 5/6:
(x - 2)/3 + 1/6 = 5/6
Subtract both sides by 1/6:
(x - 2)/3 + 1/6 - 1/6 = 5/6 - 1/6 (subtraction property of equality)
(x - 2)/3 = 4/6
Multiply both sides by 3:
(x - 2)/3 × 3 = 4/6 × 3 (multiplication property of equality)
x - 2 = 2
Add both sides by 2:
x - 2 + 2 = 2 + 2 (addition property of equality)
x = 4
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IncorrectYour answer Is Incorrect.Find the range of the quadratic function.y=3x2 - 30x + 77Write your answer as an inequality using x or y as appropriate.Or, you may instead click on "Empty set" or "All reals" as the answer.DSODO음EmptysetAll realsХ?
We are given the following quadratic function:
[tex]y=3x^2-30x+77[/tex]To determine the range we need first to determine the vertex of the quadratic function. To do that, since we have an equation of the form:
[tex]y=ax^2+bx+c[/tex]The x-coordinate of the vertex is given by:
[tex]x=-\frac{b}{2a}[/tex]Replacing we get:
[tex]x=-\frac{-30}{2(3)}[/tex]Solving we get:
[tex]x=\frac{10}{2}=5[/tex]The y-coordinate of the vertex is found by replacing this value in the quadratic equation:
[tex]\begin{gathered} y=3(5)^2-30(5)+77 \\ y=3(25)-150+77 \\ y=2 \end{gathered}[/tex]Now, since the term "a" is a positive number the parabola opens upwards, and the range is the values of "y" that are larger than the y-coordinate of the vertex, that is:
[tex]R=\mleft\lbrace y\in\R\parallel y\ge2\rbrace\mright?[/tex]Directions: Raise the powers of all variables and numbers indicated, and then turn the following expressions in radical form into exponential expressions in rational form. You do not need to evaluate or solve any of the expressions, just put them in simplest exponential form.
The value of the exponents in simple exponential form is [tex]x^{\frac{44}{5}}[/tex] .
The mathematical operation of exponentiation, written as bⁿ, involves the base number (b) and the exponent (or power) number (n). The way to say this word is "b (elevated) to the (power of) n."
Exponentiation corresponds to repeated base multiplication when n is a positive integer since bⁿ is the outcome of multiplying n bases. The exponent is often displayed to the right of the base as a subscript.The phrase "b to the nth power" or simply "b to the nth" is used to refer to bn. Other variations are "b (raised) to the power of n," "the nth power of b," and "b to the power of n" and "b to the nth power,"The properties of exponents tell us that when the bases are equal then on multiplication the powers are added and on division the powers are subtracted.
[tex]\sqrt[5]{5^y} \cdot(5^4)^3 = 5^{\frac{y+60}{5} }[/tex]
[tex]\sqrt[5]{5^x} \cdot(5^4)^3 = 5^{\frac{x+60}{5} }[/tex]
Therefore the properties of exponents can be used to find the exponential solutions.
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COULD REALLY USE HELP!only have a short amount of time!.Write the translated equation y = 1xl so that the vertex is at(-5, -3). You can use parenthesis instead of absolute valuebars for this answer.
With the function given as y = |x|, and the value of x on the graph is -5, when translated it becomes
[tex]y+3=|x+5|[/tex]Because when x = -5, then y + 3 = 0 (that is, y = -3)
In a science project, the number of bacteria increases exponentially. Every hour, the number of bacteria triples. If the project starts with 100 bacteria, how many bacteria are present after 5 hours?
Consider that the exponential function can be written as follow:
f(x) = a
Find the 55 th term in the following sequence: -102, -98, -94, -90
Answer:
114
Step-by-step explanation:
Using the explicitly formula for an arithmetic sequence, the nth term is 4n-106.
Thus, the 55th term is 55(4)-106 = 114.
- School is 2 miles from home along a
straight road. The table shows your
distance from home as you walk home
at a constant rate. Give the constant of proportionality as a decimal.
Time (min)= Distance from home (mi)
10 min =1.5 miles
20 min= 1 mile
30 min= 0.5 miles
The most appropriate choice for proportion will be given by -
the constant of proportionality is 0.05
What is proportionality?
Suppose there are two quantities. Proportion indicates that if there is a change in the value of one quantity, the value of other quantity also changes but maintaining a constant ratio
Proportion can be direct or inverse
Direct proportion
Two quantities are said to be in direct proportion if on increasing the value of one quantity, the value of other quantity also increases and vice versa.
For example cost of a commodity and quantity of a commodity are in direct proportion
Inverse proportion
Two quantities are said to be in inverse proportion if on increasing the value of one quantity, the value of other quantity decreases and vice versa.
For example Number of men and number of days taken by those men to complete a job.
Here,
Distance from home is not proportional to time
Distance of school from home = 2 miles
For distance from school = 2 - 1.5 = 0.5 miles, time taken is 10 min
For distance from school = 2 - 1 = 1 mile, time taken is 20 min
For distance from school = 2 - 0.5 = 1.5 miles, time taken is 30 min
Let [tex]d = k \times t[/tex], where k is the constant of proportionality.
Putting d = 0.5, t = 10,
[tex]0.5 = k\times 10\\k = \frac{0.5}{10}[/tex]
k = 0.05
Putting d = 1, t = 20,
[tex]1 = k\times 20\\k = \frac{1}{20}[/tex]
k = 0.05
Putting d = 1.5, t = 30,
[tex]1.5 = k\times 10\\k = \frac{0.5}{30}[/tex]
k = 0.05
So the constant of proportionality is 0.05
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A company sells equipment for $4,000. the original cost was $50,000.the accumulated depreciation is $45,000. the sale results in what?A. a loss of $4000B. a loss of $1000
ANSWER
Loss of $1000
EXPLANATION
Cost is $50000
The less accumulated depreciation is $45000
Hence, the book value on data on sale;
[tex]\begin{gathered} 50000-45000 \\ =5000 \end{gathered}[/tex]Gain or loss on sale = Sale value - Book value;
[tex]\begin{gathered} 4000-5000 \\ =-1000 \end{gathered}[/tex]Therefore a loss
x f(x)-2 -6-1-10 212 23-14 -6Which interval could contain a solution to f(x) = 0?A. -6
Notice that when x = -1, f(x) = -1, and if x = 0, then f(x) = 2.
As we can see, the values of f(x) change from negative to positive between -1 and 0. This means that between the interval -1 < x < 0, we can find f(x) = 0
how do this problem and what would be the answer?
We will have the following:
[tex](g\circ f)(x)=2(4x+3)\Rightarrow(g\circ f)(x)=8x+6[/tex]Pepe Garza, sales leader for the past month, earned 47 one-point certificates. If he earned a total of 68 points, how many three-point certificates did he earn?
We know Pepe earned a total of 68 points, 47 of which were earned by one point certificates. That means that 68-47=21 points were earned by 3 points certificates.
Therefore he earned 21/3=7 three point certificates.
The graph shows the scores of an exam. About what percent of students scored above 86%?
Attach shows the scores of students in an exam
[tex]\begin{gathered} \text{(students scored above 86\%) = }\frac{\text{ number of students score above 86\%}}{\text{Total scored }}\text{ x }\frac{100}{1} \\ \text{(students scored above 86\%) = }\frac{\text{8+5.9+2.2+2}}{1.4+2.2+4.5+6.2+8.5+16.5+18+16.3+8+8+5.9+2.2+2}X\frac{100}{1} \\ \\ \text{(students scored above 86\%) = }\frac{18.1}{99.7}\text{ X }\frac{100}{1} \\ \text{(students scored above 86\%) = }18.15\text{ \%} \\ \text{(students scored above 86\%) = 18\%} \end{gathered}[/tex]Hence the correct answer = 18% Option A
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Sam and his cousin Matt have the same birthday, but Sam is 5 years older than Matt. Let the variable x represent Sam’s age and y represent Matt’s age. Graph the relationship between Sam’s age and Matt’s age.
The relationship between Sam’s age and Matt’s age is given as x = y + 5
What is an equation?An equation is an expression that can be used to show the relationship between numbers and variables.
The equation of a line in slope intercept form is:
y = mx + b
Where m is the slope and b is the y intercept
Let x represent Sam’s age and y represent Matt’s age. Sam is 5 years older than Matt, hence:
x = y + 5
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