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3 years ago

Whats the answer, I'll give branliest to the correct one, with an explanation. I'll report random answers

Mathematics

1 answer:

Eduardwww [97]3 years ago

8 0

Answer:

option C 2*x + 3*y = 7.20

4 *x + 2*y = 8.80

1.4

Step-by-step explanation:

PART A

Steve

2lbs of grapefruit

3lbs oranges for $7.20

kennedy

4lb grapefruit

2lb oranges for $8.80

price 1 pound grapefruit x

1 pound oranges y

Then for steve

2*x + 3*y = 7.20

for kennedy

4 *x + 2*y = 8.80

PART B

now we have to find y from above equations

2x + 3y = 7.20 multiply by 2 on both sides 4x + 6y = 14.4

4x + 2y = 8.80

next by substracting the above two equations we get

6y - 2y = 14.4 - 8.80

4y = 5.6

y = 1.4

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4 years ago

The radius of the base of the cylinder is 2x cm and the height of the cylinder is h cm.

valentina_108 [34]

Answer:

h = 9x

Step-by-step explanation:

Given: i. for the cylinder, base radius = 2x cm, height = h cm

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= $\frac{1}{3}$ $\pi$ x 4 $x^{2}$ x h

= $\frac{4}{3}$ $\pi$ $x^{2}$ h

volume of a sphere = $\frac{4}{3}$ $\pi$ $r^{3}$

where r is the radius.

volume of the given sphere = $\frac{4}{3}$ $\pi$ x $(3x)^{3}$

= $\frac{4}{3}$ $\pi$ x 9 $x^{3}$

= 12 $\pi$ $x^{3}$

Since,

volume of the cylinder = volume of the sphere

Then we have;

$\frac{4}{3}$ $\pi$ $x^{2}$ h = 12 $\pi$ $x^{3}$

4 $\pi$ $x^{2}$ h = 36 $\pi$ $x^{3}$

subtract $x^{2}$ from both sides

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3 years ago

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Answer:

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OLEGan [10]

Answer:

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