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3 years ago

Help with circle problems

Mathematics

1 answer:

MAXImum [283]3 years ago

4 0

B. 150

Hope I was able to help!

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1.2x-4y=28 solve for y

Gnesinka [82]

2x -4y= 28
⇒ -4y= 28 -2x
⇒ y= (28 -2x)/ (-4)
⇒ y= 28/(-4) -(2x)/ (-4)
⇒ y= -7 + 1/2x

The final answer is y= -7 + 1/2x~

4 0

3 years ago

Problem PageQuestion A Web music store offers two versions of a popular song. The size of the standard version is 2.6 megabytes

dalvyx [7]

Answer:

There were 210 downloads of the standard version.

Step-by-step explanation:

This question can be solved using a system of equations.

I am going to say that:

x is the number of downloads of the standard version.

y is the number of downloads of the high-quality version.

The size of the standard version is 2.6 megabytes (MB). The size of the high-quality version is 4.2 MB. The total size downloaded for the two versions was 4074 MB.

This means that:

$2.6x + 4.2y = 4074$

Yesterday, the high-quality version was downloaded four times as often as the standard version.

This means that $y = 4x$

How many downloads of the standard version were there?

This is x.

$2.6x + 4.2y = 4074$

Since $y = 4x$

$2.6x + 4.2*4x = 4074$

$19.4x = 4074$

$x = \frac{4074}{19.4}$

$x = 210$

There were 210 downloads of the standard version.

8 0

4 years ago

The equation P = 21 + 2w can be used to find the perimeter of a rectangle. A 1 point rectangular shaped playground is enclosed b

nalin [4]

Answer:

130 m

Step-by-step explanation:

Given:

P = 2l + 2w
P = 500 m

Length is:

l = 120 m

Substitute values and solve for w:

500 = 2*120 + 2w
2w = 500 - 240
2w = 260
w = 260/2
w = 130 m

5 0

3 years ago

Buzz and Jessie are missing each other and their friend Woody They want to meet at Woodys house which is halfway between their a

chubhunter [2.5K]

Answer:

Buzz and woody should see a doctor because they are ugly

Step-by-step explanation:

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8 0

3 years ago

Find the missing value of x and y.

scoray [572]

Step-by-step explanation:

tan 60 = 21 ÷ y

1.73 = 21 ÷ y

y = 21 ÷ 1.73

y = 12.14

tan 30 = x÷ 12

0.6 x 12 = x

x = 7.2

4 0

3 years ago