MATHEMATICS MIDDLE SCHOOL

Can someone help me in this question plssss.The area of a circle, in terms of π, is 54π m2.
Find the value of the radius.
Give your answer as a simplified surd.

Answers

Answer 1
Answer:

Answer:

AREAof circle = πr² { r = radius} -----------(1)

Area of circle = 54πm²{given} -----------(2)

from eq(1) & eq(2), we get

=> πr² = 54π

=> r² = 54π/π

=> r² = 54

=> r = √(54) {after taking root both sides

Hence,thevalueofradiusis√(54)m.

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Answer 2
Answer: The answer is 6 x root 3

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If f(x) varies directly with x and f(x) = 50 when x = -10, then what is f(x) when x = 15

Answers

The required proportional value of the f(x) is given as -75 when x = 15.

What is proportionality?

proportionality is defined as between two or more sets of values, and how these values are related to each other in the sense are they directlyproportional or inverselyproportional to each other.

Here,
As
f(x)  ∝ x
So
f(x₁) / f(x₂) = x₁ / x₂

Substitute the values in the above equation,
50 / f(x₂) = -10 / 15
f(x₂) = -75

Thus, the required value of the f(x) is given as -75 when x = 15.

Learn more about proportionality here: brainly.com/question/22620356

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f(x)=50 x= -10

If x=1, then f(x)=50/-10 = -5

Therefor, when x=15, f(x) = 15*-5 = -30

Please answer this one for me

Answers

A.) Your second point will be (25,125) because your y-intercept is 50 you move up 3 gridlines and to the right one and that will be your second point.

What is 15 cubes in notation form

Answers

The answer will be

15×15×15=3375
15 times 15 times 15 equals 3375

Lisa is cooking muffins.The recipe calls for 7 cups of sugar. She has already put in 2 cups. Hpw many more cups does she need to put in?

Answers

Well, if she already put in 2, and she needs seven, then all you need to do is subtract. So, 7-2 equals: 5
She needs 5 more cups of sugar.

Which situation would be represented by the integer -8?You earn $8
A hole 8 feet deep.
A temperature of 8°F.
An 8-yard pass.

Answers

Answer:

Step-by-step explanation:

a hole 8 ft deep.....would be -8 because it is -8 below ground level

u earn $ 8....thats +8

a temp of 8 F....thats a +8

an 8 yd pass....thats a + 8

Answer:

a hole 8 ft deep.....would be -8 because it is -8 below ground level

1) y = 5x + 8
Does the equation represent a direct variation?

Answers

Yes it is an equation of direct variation since it is of the form y = kx where k is the constant  of the variation. Looking at the the equation , we see that the constant of variation is k = 5
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