f(t) = t² – 2t; Find f(-7)

Answers

Answer 1

Answer:

f(-7) = 63

General Formulas and Concepts:

Order of Operations: BPEMDAS

Substituting and Evaluating

Step-by-step explanation:

Step 1: Define

f(t) = t² - 2t

f(-7) is t = -7

Step 2: Solve

Substitute:                         f(-7) = (-7)² - 2(-7)Exponents:                        f(-7) = 49 - 2(-7)Multiply:                             f(-7) = 49 + 14Add:                                   f(-7) = 63

Related Questions

If Gabe's Soccer Ball Company is able, due to competitive pressure, to charge $60 for a new soccer ball, while one soccer ball costs $28 to make, plus $15,000 per month in overhead costs (mostly Gabe's extravagant salary) find: a. The average cost c(x) of producing each soccer ball b. Algebraically find the number of soccer balls Gabe's company must produce per month in order to break even (Profit = 0). Profit = Total Revenue – Total Cost c. Algebraically find the number of soccer balls Gabe's company must make to earn a profit of $10,000 per month. d. If Gabe took a pay cut to reduce the overhead costs to $8,000 per month, how many fewer balls would the company have to sell to break even. (There are multiple ways to get this result).

Answers

Answer:

Results are below.

Step-by-step explanation:

Giving the following information:

Selling price= $60

Unitary variable cost= $28

Fixed costs= $15,000

First, we need to calculate the average total cost:

Average cost= total cost / number of units

For example, for 1 unit and 10,000 units:

1 unit:

Average cost= 15,028/1 = 15,028

10,000 units:

Average cost= (15,000 + 28*10,000) / 10,000

Average cost= $29.5

Now, we can calculate the break-even point in units:

0= (60*x) - (28*x) - 15,000

x= number of units to break-even

0= 32x - 15,000

15,000/32= x

468.75=x

break-even point in units= 469

For the desired profit of $10,000:

10,000 = (60*x) - (28*x) - 15,000

25,000= 32x

781.25= x

Break-even point= 782 units

Finally, fixed costs dropped by $8,000:

0= 32x - 7,000

x= 7,000/32

x= 218.75

Break-even point= 219

Difference= 250 units

Help me please be correct tysm <3

Answers

Answer:

the answer is yes  

because it is within the shaded region of both inequalities

the answer is yes! hope this helps <3.

Stuart bought a sweater on sale for 30% off the original price and another 25% off the discounted price. If the original price of the sweater was $30, what was the final price of the sweater?

Answers

Answer:

$15.75

Step-by-step explanation:

30 multiplied by 0.3 is 9. 30-9 is 21. 21 multiplied by 0.25 is 5.25. 21-5.25 is 15.75

Sam has a total of 43 quarters and nickels in her purse. If her change is worth $7.75, how many nickels and how many quarters does Sam have?
Warning: This is Algebra 1

Answers

Answer:

i need help with this too\

Step-by-step explanation:

Let q= the number of quarters
Let n=the number of nickels

q+n=43 This equations represents the total number of coins.
0.25q+0.05n=7.75 This equations represents her change totaling to $7.75.

Multiply the second equation by 100 to simplify the arithmetic.

q+n=43
25q+5n=775 Multiply the first equation by -5.

-5q-5n=-215
25q+5n=775 Add the two equation in which the n variable gets eliminated.
20q=560 Divide both sides by 20.

q=28 Substitute q=28 into the first equation and solve for n.
28+n=43
-28 -28
n=15 Therefore, she has 28 quarters and 15 nickels in her purse.

Hope this helps.

In 1992, Disney created a one-of-a-kind special pin. Each year, the pin’s value appreciates by a constant amount. In 1997, the pin was valued at $350. In 2002, it was valued at $600. Let x be the number of years since 1992 and y be the value of the pin in dollars. Write a linear equation in slope-intercept form that models this situation.

Answers

Answer:

[tex]y = 50x + 50[/tex]

Step-by-step explanation:

Given

x = years since 1992.

y = value of pin

This means that

[tex]x = 1[/tex] ----- in 1992

[tex]x_1 = 6[/tex]; [tex]y_1 = 350[/tex] ---- in 1997

[tex]x_2 = 11;[/tex] [tex]y_2 = 600[/tex] ---- in 2002

Required

Determine the line equation in slope intercept form

First, we need to determine the slope (m) of the line

[tex]m = \frac{y_2 - y_1}{x_2- x_1}[/tex]

[tex]m = \frac{600 - 350}{11- 6}[/tex]

[tex]m = \frac{250}{5}[/tex]

[tex]m = 50[/tex]

The equation is then calculated using:

[tex]y - y_1 = m(x - x_1)[/tex]

Recall that

[tex]x_1 = 6[/tex]; [tex]y_1 = 350[/tex]

[tex]m = 50[/tex]

So, we have:

[tex]y - 350 = 50(x - 6)[/tex]

[tex]y - 350 = 50x - 300[/tex]

[tex]y = 50x - 300 + 350[/tex]

[tex]y = 50x + 50[/tex]

Which graph represents the equation 6x−5y=10 ? A image 1ab24067a1a445c6b2cc4633bfedfbb0 B image 28e91cd406af4c89bbd5cef1ec880a48 C image cfe6c7f17af74557ac6084f98e5bf5e0 D image 6fe8450f191547f885106542b28826f1

Answers

Answer:

i'm sorry

Step-by-step explanation:

what do you mean

There’s no link to click

please help me out with this question.
much appreciation. Thanks.​

Answers

Answer:

there is nothing

Step-by-step explanation:

Evaluate the expression | 9 | + | - 2|

Answers

Answer: 11

Step-by-step explanation:

|9| + |-2| =

9 + 2 = 11

Answer:11Hope this helps!!

Math Trick
43 x 67 = ?

Answers

Answer:2881

Step-by-step explanation:

Answer:

2881

Step-by-step explanation:

Please answer this giving brainliest and 20 points. If you say something weird i will make sure you get banned.

Answers

Answer:

C. The value of a is the number that the x-values are multiplied by to get to the corresponding y-values. So, a = 3.

Step-by-step explanation:

Given the points (5, 15) and (-5, -15) are plotted using the equation y = a•x, this shows a proportional relationship between y and x.

Thus using any of the points, say (5, 15), x = 5, and y = 15, thus:

a = y/x = 15/5

a = 3

Therefore, the value of a, which is 3, is the number that the x-values, 5 and -5, are multiplied by to get the corresponding y-values, 15 and -15.

As we can see, if we multiply each of the x-values by 3, it will give us their corresponding y-values.

Which values from the given replacement set make up the solution set of the inequality?

m+7<18 ; {8, 9, 10, 11}

{9, 10, 11}

{8, 9, 10}

{8, 9}

{10, 11}

Answers

Answer:

B: 8,9,10

Step-by-step explanation:

ILL GIVE BRAINLIST IF YOU ARE RIGHT 1. (05.01 LC)
The graph shows the distance, y, that a car traveled in x hours:

What is the rate of change for the relationship represented in the graph? (1 point
55
54
1/54
1/55

Answers

I think The answer is 55

Answer:

55 (A) (I understand you bro)

because here, 1 (x) is = to 55 (y), the rate is 1:55 (x:y). This is a ratio, it's gonna bother you later

Please help me! Im not good at this topic.

Answers

Answer:

I THINK IT IS C.

Step-by-step explanation:

which is closer to 0 3/8 or -1/3

Answers

Answer:

3/8

Step-by-step explanation:

Answer:

3/8 = 9/24

1/3 = 8/24

-1/3 is closer to 0

3/8 is farther from 0

Can anyone help me on these 2 questions

Answers

Answer:

Nope lol

Step-by-step explanation:

a) So to find f(2) this means x=2, and you’re looking for y. On the graph, where x=2, y=3.
This means f(2)=3

b) To find f(x)=0, find where y=0. y=0 at x=5, and y=0 at x=-5.

Hope this makes sense!! If you have any more questions, let me know on the comments.

Sara borrows $56 from her mother to buy a new pair of jeans. If
Sara decreases her debt by $4 each week, how many weeks will
it take her to pay off the whole amount she owes her mother?

Answers

Answer:

Have an amazing night/day!

Step-by-step explanation:

14 i think ill edit if im wrong

For the equation 3(2x − 5) = 6x + k, which value of k will create an equation with infinitely many solutions?

Answers

Answer: K = -14

Step-by-step explanation: solve for k by simplifying both sides of the equation then isolating the variable

Answer:

the correct answer is -15 for the equation:

3(2x − 5) = 6x + k

Hope this helped!

Find the slope of the line passing through the points (9,3) and (9,-5).

Answers

Answer: its 8

Step-by-step explanation:

Use the distance formula to determine the distance between two points.

Which diagram can be used to prove △ABC ~ △DEC using similarity transformations?

Triangle A B C is rotated about point C and then is dilated to form smaller triangle C E D.
Triangle A B C is reflected across side A C and then is dilated to form smaller triangle C E D.
Triangles A B C and C E D have different angle measures.
Right triangle A B C is shown. Line segment D E is drawn near point C to form triangle D E C.

Answers

Answer:

A

Step-by-step explanation:

I like math

Answer:

Answer is A

Step-by-step explanation:

edge2021

What is 1232456 * 789456? I will mark brainliest!!

Answers

Answer:

972,969,793,936

Step-by-step explanation:

972,969,793,936 is the answer when the numbers and multiplied.

You have to multiply according to the different places you put the numbers in.

Hope this helped,

Kavitha Banarjee

anserw

789101112

Step-by-step explanation:

I need help with this question ASAP

Answers

x+x+10+2(2x+10) = 180
2x + 10 + 4x+20 = 180
6x + 30 = 180
6x = 150
X = 25
Plug in 25 to find angle

Arrange the decimals from least to greatest. Choose the letter below that shows the order least to greatest.

-4.3 -0.43 -0.043 -0.34 -3.4

-4.3, -3.4, -0.43, -0.34, -0.043

-4.3, -0.43, -0.043, -3.4, -0.34

-0.043, -0.43, -0.34, -3.4, -4.3

Answers

Answer:

-4.3, -3.4, -0.43, -0.34, -0.043

The cost y (in dollars) to spend an evening bowling is proportional to the
number of games x that are bowled.
It costs $16 to bowl 4 games.
5. Write an equation that represents the situation.
6. How much does it cost in dollars) to bowl 6 games?

Answers

Answer:

y = 4x

Bowl 6 games cost $24

Step-by-step explanation:

Proportional Relationship

We have a situation where the cost y in dollars to spend an evening bowling is proportional to the number of games x bowled.

A proportional relationship is written with the equation:

y = k.x

The value of k will be determined by using the given information: 4 games bowled cost $16, thus:

16 = k.(4) = 4k

Solving:

k = 16 / 4 =4

Thus, the function is:

y = 4x

x=6 games bowled cost:

y = 4*6

y = $24

Bowl 6 games cost $24

Solve the simultaneous equations:

3a-2b=14
12a+9b=39

Answers

Use elimination
Multiply first equation by 4
12a - 8b = 56
12a + 9b = 39
Subtract both
-17b = 17
b = -1
Plug in -1 for b
3a - 2(-1) = 14
3a = 12, a = 4
Final answer: a = 4, b = -1

Warm-Up: Solve each equation for x.
1. x + 5 = 15

Answers

X+5=15
-5 -5
X=10
Hope this helps!!

Answer:

x = 10

Step-by-step explanation:

x + 5 = 15

x = 15 - 5

x = 10

Thus, x = 10

-TheUnknownScientist

Jack has 27 pencils. Shane has 3 more than twice the amount that Jack has. Which equation shows the relationship between the number of pencils Jack (j) has and the number of pencils Shane (s) has?

Answers

Answer:

s=27*2+3

rrefrewhtefghttrfdgh

5(x - 6) + 2 = 7x - 8
what is x

Answers

Answer:

x = -10

General Formulas and Concepts:

Order of Operations: BPEMDAS

Properties

Distributive

Step-by-step explanation:

Step 1: Define equation

5(x - 6) + 2 = 7x - 8

Step 2: Solve for x

Distribute 5:                              5x - 30 + 2 = 7x - 8Subtract 5x on both sides:       -30 + 2 = 2x - 8Add:                                           -28 = 2x - 8Add 8 on both sides:                -20 = 2xDivide 2 on both sides:             -10 = xRewrite:                                      x = -10

Step 3: Check

Plug in x to verify it's a solution.

Substitute:                         5(-10 - 6) + 2 = 7(-10) - 8Subtract:                            5(-16) + 2 = 7(-10) - 8Multiply:                             -80 + 2 = -70 - 8Add/Subtract:                    -78 = -78
5(x-6)=7x-8-2
5(x-6)=7x-10
5x-6*5=7x-10
5x-30=7x-10
5x-7x=-10+30
-2x=20
x=20/-2
x=-10

Rosa picked some peaches from one tree,
and then she picked 8 peaches from a
different tree.
She gave 10 peaches to Sten.
She has 12 peaches left.
How many peaches did Rosa pick from the
first tree?

Answers

Answer:

points

Step-by-step explanation:

She picked 22 peaches first

3g-2+7g+8=
What is this

Answers

Answer:

10g+6 is the answer

Step-by-step explanation:

1. So far, Marta has correctly predicted the winner of 6 out of 13 football games. She wants to know how many consecutive games she would have to predict correctly to raise the percent of correct predictions to 65%. (a) Write an equation to represent this situation. (3 points) (b) Solve the equation. Show all steps. (5 points) (c) Answer the question. How many consecutive games must she predict correctly to raise her percent to 65%? (1 point)

Answers

Answer:

[(6 + x) / 13+x] = 0.65

7

Step-by-step explanation:

Given that:

Total number of games = 13

Number of correct prediction = 6

Number of correct predictions needed to raise prediction % to 65%

(Number of correct predictions) / (total number of games) = 0.65

Let x = number of additional consecutive correct predictions

[(6 + x) / 13+x] = 0.65

Where x = number of consecutive predictions required

6 + x = (13 + x) * 0.65

6 + x = 8.45 + 0.65x

x - 0.65x = 8.45 - 6

0.35x = 2.45

x = 2.45 / 0.35

x = 7

7 consecutive correct predictions

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