f(x) = -2x + 5
f ( ) = 13

Answers

Answer 1

Answer:

Okay, I haven't done this a long time however I believe with this you have to solve the equation by doing substitution.

Step-by-step explanation:

so, if f (x) equals 13, you replace the x in the equation to 13.

f(x)=-2x+5

f(x)=-2(13)+5

f(x)=26+5

f(x)=31

I believe 41 would be your answer. Hope this is right and it helped!


Related Questions

evulate a^2 - b^2 if a=4 and b= -2

Answers

Answer:

20

Step-by-step explanation:

4^2 = 16

-2^2 =-4

16 -(-4) =20

between which two consecutive whole numbers does the root of 15 lie ​

Answers

It lies between the numbers 3 & 4 because the true answer of [tex]\sqrt{15\\[/tex] is 3.87

F&J Farms sells super egg-laying chickens that historically weigh on average 3 pounds with a standard deviation of 0.4 pounds. However, it has been discovered that the chickens actually weigh twice as much as they used to. What is actual the mean and standard deviation of the chickens?

Answers

Answer:

Mean of chicken = 6 pounds, Standard Deviation of chicken = 0.6 pounds

Step-by-step explanation:

Given : Chickens mean & standard deviation = 3 & 0.4 pounds respectively. Chickens considered weigh twice actually now.

If all numbers in the series are multiplied by a constant, the mean gets multiplied by that constant. So, new mean = 3 x 2 = 6

If all numbers in the series are multiplied by a constant, the standard deviation gets multiplied by that constant. So, new standard deviation = 0.4 x 2 = 0.8

-10+1= plssssss help meeeeeee

Answers

Answer:

-9

Step-by-step explanation:

-10 - (-1) = -9

Laura checked her outdoor thermometer and noticed that the temperature rose from 31 degrees in the morning to 45 degrees in the afternoon. What is the approximate percent increase for the day so far?

Answers

Answer: 45%

So for some reason I need to add at least 20 words? So... yeah... the answer is 45%

Answer: 45%

Step-by-step explanation:

A rectangle has coordinates A(-4,3). B(0,0), C(6,8) and D(2,11)

Answers

Answer:

what is the question

Step-by-step explanation:

6. 108 is how many times as large as 2. 103?

Answers

Answer:

54 times larger than 2

Step-by-step explanation:

108 divided by 2 is 54

54 times larger than 2

-1 1/3- 1 2/3 in the simplest form

Answers

Answer:

-3

Step-by-step explanation:

Answer:

-3

Step-by-step explanation:

thats in the simplest form

10(6 + 4) ÷ (2³.7)² =​

Answers

Answer:

25/784

Step-by-step explanation:

solve each equation for x:
-5(3x + 4) = 25
4(x + 2) - 3(2x - 4) = 10
-4x - 3 = -1

Answers

Answer:

1.  x = -3

2.  x = 5

3.  Exact Form:   x = −1/2

Decimal Form:   x = −0.5

Step-by-step explanation:

Answer:

1. -3

2. 2/3

3. 1/2

What is the missing addend?
52,835 +
= 87,216

Answers

Answer: 34,381

Step-by-step explanation:

You have to subtract 52,835 by the sum 87,216 which will get you the answer of 34,381

The missing addend is 34,381.

87,216-52,835=34,381

You can run 1/5mi in 2 min how long will it take you you run 2mi

Answers

Answer:

20 minutes

Step-by-step explanation:

yall already know im stuck again will mark brainlyest

Answers

2) 14
3) 1
4) -2
5) -11
6) -14
7) 5
8) 29
9) 13
10) 16

8.673

8.637

Is 8.673 greater, least, or are they equal?

Answers

Answer:

the answer is greater...

What is 14/20 as a percent

Answers

The answer would be 70%

Remember 'bout :

Percent is /100

So :

14 ×5 70

-------- = ----- -

20×5 100

70 %

Im sorry if im wrong

Two​ pulleys, one with radius r 1r1 and the other with radius r 2r2​, are connected by a belt. The pulley with radius r 1r1 rotates at omega 1ω1 revolutions per​ minute, whereas the pulley with radius r 2r2 rotates at omega 2ω2 revolutions per minute. Show that StartFraction r 1 Over r 2 EndFraction equals StartFraction omega 2 Over omega 1 EndFraction r1 r2

Answers

Answer:

r1/r2 = 2ω2/ω1

Step-by-step explanation:

The velocity of each pulley is expressed as v = ωr where;

v is the linear velocity of the pulley

ω is the angular velocity of the pulley

r is the radius of the pulley.

For the two pulleys, the velocity I'd both pulleys are the same.

v1 = v2

v1 is the linear velocity of first pulley

v2 is the linear velocity of the second pulley.

v1 = ω1r1

v2 = 2ω2(r2)

r1 and r2 is the radius of pulley 1 and pulley 2 respectively.

Since v1 = v2

ω1r1 = 2ω2(r2)

Divide both sides by r2

ω1r1/r2 = 2ω2(r2)/r2

ω1r1/r2 = 2ω2

Divide both sides by ω1

ω1r1/r2/ω1= 2ω2/ω1

r1/r2 = 2ω2/ω1

Harry put blue and green marbles in a bag. Exactly 3/4 of the marbles in the bag are blue. Which of the following could be the total number of marbles in the bag.
A. 3
B. 6
C. 7
D. 8

Answers

Answer:

D

Step-by-step explanation:

Because when u multiply 3/4 times A,B,C it gives you a decimal, when u multiply 3/4 by 8 you get 6 a whole number.

The total number of marbles in the bag could be (d) 8

How to determine the possible total?

We have:

Blue proportion = 3/4

This means that the green proportion is

Green proportion = 1 - 3/4

Evaluate

Green proportion = 1/4

Express as ratio

Blue: Green = 3/4 : 1/4

Simplify

Blue: Green = 3 : 1

Add the ratios

Total = 3 + 1

Total = 4

The above means that the total number of marbles in the bag is a multiple of 4

i.e. 4, 8, 12, 16, 20......

Hence, the total number of marbles in the bag could be (d) 8

Read more about proportions at:

https://brainly.com/question/1781657

#SPJ9

if x=-2, y=-6 and z=4, Find the value of 4xy 3marks

Answers

Answer:

Step-by-step explanation:

4xy=4*(-2)*(-6)

4xy=48

Mai’s kitchen table measures 4 cm by 2.5 cm on the scale drawing.

Answers

Answer:

nice

Step-by-step explanation:

Im not sure what I have to solve here....

What are you asking? Say in the comments and I might be able help.

what is the mean of the data set? 61, 38, 40, 53

Answers

the mean of the listed data set is 48.

Answer:

48

Step-by-step explanation:

Mean = Sum of all values/ total no of data

[tex]\frac{61+38+40+53}{4} \\\\= \frac{192}{4} \\\\=48[/tex]

IS THIS A FUNCTION, AND WHY

Answers

Answer:

Yes, it is a function

Step-by-step explanation:

It is a function because for every y value there is a different x value. We can also use the vertical line test to see if there are two points on the same line.

In parallelogram JKLM, what is the relationship between angle j and angle k?

j° + k° = 180°
j° = k°
j° = -k°
j° - k° = 180°
1 of 4

Answers

Answer:

since j&k are interior angles if I added they should come up to 180° so j + k is equals to 180° yeah that's the answer

Approximate which two integers √210 is between.

Answers

Answer:

14 and 15

Step-by-step explanation:

14 - 196

15- 225

Phil would like to make a profit of $250 this summer mowing his grandfather’s lawn. If he plans to mow 20 times and estimates that his fuel costs will be $30 for the entiresummer,which equation could be used to determine how much should he charge for each mowing?

Answers

Answer:

which principle prevents a brach from abusing  its power

Step-by-step explanation:

which principle prevents a brach from abusing  its power

Answer:

20x - 30 = 250

Step-by-step explanation:

20x - 30 = 250

20x = 280

x = 14

u have to solve quadratic equations algebraically ,if u are math nerd pls help, Solve the equation 6x=2x^2+1

Answers

Answer: here you go sir

Step-by-step explanation: I couldn’t put it on here because I had to put certain symbols. Hope this helps!

A right rectangular prism is packed with cubes of side length fraction 1 over 8 inch. If the prism is packed with 16 cubes along the length, 8 cubes along the width, and 6 cubes along the height, what is the volume of the prism?

Answers

Answer:

768

Step-by-step explanation:

16x8x6=768 because volume equals length times width times height ! :)

Help, I’m stuck. Lol.

Answers

Answer:

a. height = 12

b. area = 228

Step-by-step explanation:

a. To find the height, we can use the triangle formed by the side that measures 15, the side that measures 9. and the height. The hypotenuse of the triangle(the longest side opposite of the right angle), is 15. We can then use the Pythagorean Theorem, which states that [tex]a^2+b^2=c^2[/tex], where c is the hypotenuse, and a and b are the two other sides. In this case, we need to find a leg of the triangle, not the hypotenuse. What do we do? We can first call the height a, and rearrange the Theorem into [tex]c^2-b^2=a^2[/tex]. [tex]15^2=225, 9^2=81,[/tex] and [tex]225-81=\sqrt{144}[/tex]=12. Therefore, the height of the parallelogram is [tex]\boxed{12}[/tex]

b. To find the area of the parallelogram, we can use the area formula, which is Base*Height. The base is the flat side. We can find the base by adding 9+10=19, and [tex]19\cdot12=\boxed{228}[/tex]

7. The cost of a hotel room during Lacy's trip is
$325. The hotel room tax in the city she is in
is 10.5%. What is the total cost of the hotel
room? (Example 2)

Answers

355.95 I think I’m pretty sure that the answer I’m going with my gut

Answer:

355.95

Step-by-step explanation:

i am going with my heart that this is correct.

At the start of the football game, there were 840 fans in the stadium. It began to rain during halftime, so 10% of the fans went home.
During the 3rd quarter of the game, the visiting team scored five touchdowns, so 25% of the remaining fans went home.
How many fans were in the stadium after the 3rd quarter?

Answers

After the third quarter there were 567 fans in the stands
840x.90(total-part)=756 fans at 1/2 time
756x.75= 567 fans after the third quarter

Solve the equation for b. Use lowercase letters and no spaces when typing in the equation. a+b/3= C type your answer...​

Answers

Multiply both sides of the equation by 3

3a+b=3c

Subtract 3a from both sides

B= 3c-3a


I’m not 100% sure about this answer, but I hope it helps anyways :)
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