50$ because 20$ is 40%, so times that by 2 which you get 20$ and 80%. Then you divide 20 by 2 then you get 10 which is 20% so you add 10 and you get 50$ which is 100%

3 0

2 years ago

Help pls ! I’ll mark brainliest

alexandr402 [8]

Answer:

$y = x + 3$

Step-by-step explanation:

Y in math is usually referred as the output.

X is usually the input.

In other words,

y is 3 more greater than x.

In other words,

$y = x + 3$

5 0

2 years ago

What is the answer to this

Harrizon [31]

Answer:

The answer is x = 8

Step-by-step explanation:

8 0

2 years ago

A circle is centered at the point (5, -4) and passes through the point (-3, 2).

KATRIN_1 [288]

By definition, the equation of a circle, centered at point (a, b) is

$(x-a) ^ 2 + (y-b) ^ 2 = r ^ 2$

Where r is the radius of the circumference, and is calculated as the distance from the center to any point belonging to the circumference.

We have the center (5, -4) and the point through which the circumference passes (-3, 2), then:

$a = 5\\b = -4\\r = \sqrt {(- 3-5) ^ 2 + (2 + 4) ^ 2}\\r = 10$

Finally, the equation of the circumference is:

$(x-5) ^ 2 + (y + 4) ^ 2 = 10 ^ 2$

5 0

2 years ago

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