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2 years ago

Twenty percent of what number is 100?

Mathematics

1 answer:

elena-s [515]2 years ago

5 0

Answer:

500

Step-by-step explanation:

100+100+100+100+100

20%+20%+20%+20%+20%=100%

answer 500

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If f(x) is a linear function, f(−2)=4, and f(1)=−1, find an equation for f(x)

juin [17]

Answer:

$y = -\frac{5}{3}x+\frac{2}{3}$

Step-by-step explanation:

Given

$f(-2) = 4$

$f(1) = -1$

Required

The equation of the function

The given parameters means that:

$(x_1,y_1) = (-2,4)$

$(x_2,y_2) = (1,-1)$

Calculate the slope (m)

$m = \frac{y_2 -y_1}{x_2 -x_1}$

$m = \frac{-1-4}{1--2}$

$m = \frac{-5}{3}$

The equation is then calculated using:

$y = m(x - x_1) + y_1$

This gives:

$y =\frac{-5}{3}(x--2)+4$

$y =\frac{-5}{3}(x+2)+4$

Open bracket

$y = -\frac{5}{3}x-\frac{10}{3}+4$

Take LCM

$y = -\frac{5}{3}x+\frac{-10+12}{3}$

$y = -\frac{5}{3}x+\frac{2}{3}$

6 0

3 years ago

Find the solution of y = 2x + 5 for x = 1.

Sholpan [36]

Answer:

(1, 7)

Step-by-step explanation:

Substitute x = 1 into the equation for the corresponding value of y

y = 2x + 5 = (2 × 1) + 5 = 2 + 5 = 7

Solution is (1, 7)

8 0

3 years ago

Read 2 more answers

Can someone pls help me

yarga [219]

If I read the problem correctly, the answer should be D) 5.

The picture was blurry so I hope I read it right.

I hope this is correct and that it helps✨❤️

6 0

2 years ago

Read 2 more answers

Please help! 19 points! Brainliest to best answer! Solve for the following equation step by step and justify your steps when usi

oksian1 [2.3K]

Answer:

ummm i dont know but try 16 35/21

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

1 Kg = 2.2046 pounds what will be the answer in round to nearest tenth 4550 pounds = ______ kg

Harrizon [31]

Answer:

2063.9 kg

Step-by-step explanation:

Given,

1 kg = 2.2046 pounds

This can also be written as:

1 pound = 1/2.2046 kg

We have to calculate the value of 4550 pounds in kg up to nearest 10th

Thus,

$4550 pounds= \frac{4550}{2.2046} kg$

Solving the above equation, we get:

4550 pounds = 2063.8664 kg

Rounding the above result to nearest tenth as:

4550 pounds = 2063.9 kg

6 0

2 years ago