2 years ago

Someone help me pls

Mathematics

1 answer:

Tcecarenko [31]2 years ago

6 0

D bc it equals to a number that is rational

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Answer:

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2 years ago

Which equation represents a circle with a center at (-4, 9) and a diameter of 10 units

VLD [36.1K]

Radius = 1/2 * diameter = 5

Equation is (x - (-4))^2 + (y - 9)^2 = 5^2

(x + 4)^2 + (y - 9)^2 = 25 is the answer

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2 years ago

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What is the first step needed to solve 3/4 times -3 equals -18

Andreyy89

Answer:

Make -3 a fraction

Step-by-step explanation:

3/4 x -3

3/4 x -3/1

3/4 x -12/4

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2 years ago

Rachel earned $34 in 4 hours at her job today. She wants to know how much she could earn tomorrow if she works 12 hours at the s

Nutka1998 [239]

Answer:

34/4 = 8.5 dollars per hr

12 x 8.5 = 102

Answer: $102

Step-by-step explanation:

First step: find the unit rate (how much she earns per hour )

34/4 = 8.5

Next: Find how much she wants to work for

Then: Create the equation.

12 x 8.5

Last: multiply 12 and 8.5 and you should get your answer of 102 dollars

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2 years ago

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As part of a new advertising campaign, a beverage company wants to increase the dimensions of their cans by a multiple of 1.10.

Firdavs [7]

Answer:

New can holds $112.25\,\,cm^3$ more than the old can

Step-by-step explanation:

Given: Diameter of the can is 6 cm and height is 12 cm such that volume of can is $339.12\,\,cm^3$

Dimensions of the can are increased by a multiple of 1.10

To find: Difference between the volume of new can and volume of old can

Solution:

Volume of can (v) = $339.12\,\,cm^3$

Let r, h denote radius and height of the can.

Let R, H denotes radius and height of the new can.

r = diameter/2 = $\frac{6}{2}=3\,\,cm$

h = 12 cm

R = $3(1.1)=3.3.\,\,cm$

H = $12(1.1)=13.2\,\,cm$

New volume (V) = $\pi (R)^2H=\pi(3.3)^2(13.2)=451.37\,\,cm^3$

So,

$V-v=451.37-339.12=112.25\,\,cm^3$

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3 years ago