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2 years ago

8

The crab nebula is a cloud of gas and dust particles in space that is expanding at a rate of 930 miles per second. What is its r

ate of expansion in miles per hour?

1 answer:

Flauer [41]2 years ago

7 0

There are 3,600 seconds in one hour so if it expands at rate of 930 miles per second then 930 * 3600= 3,348,000 miles per hour

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Please help me. i will mark you as most brilliance and give you 5 stars! Please be specific when answering. thank you! :)

serg [7]

Step-by-step explanation:

5x+52=9x+20

subtract 5x on both sides

subtract 20 on both sides

32=4x

divide by 4 on both sides

x=8

plug in x to the equations for A, D, and C

A and D are 92°

C is 56°

B and C will add up to 90, so

90-56=34°

13y-6=34

add 6 on both sides

13y=40

divide by 13

y=40/13 (I don't wanna calculate that)

7 0

2 years ago

Which column represents the correct method for the proof of the following statement?

kramer

Answer:

90

Step-by-step explanation:

the colums add up to angle 1, which make angle 2 adjacent.

9-9=0

3 0

2 years ago

Sophia earned $294 in 24 hours. How many dollars did she earn per hour?

Vadim26 [7]

Answer:

$12.25

Step-by-step explanation:

Step 1:

$294 : 24 Ratio

Step 2:

$294 ÷ 24 Divide

Answer:

$12.25

Hope This Helps :)

6 0

2 years ago

Read 2 more answers

A box of 24 greeting cards is sold at a gift shop for $3.00. The cost to the store is $2.40. What is the markup as a percentage

Murljashka [212]

Answer:

25%

Step-by-step explanation:

formula for percent markup/discount= absulute value of original-new/original

plug the numbers is

(2.40-3.00/2.40) absolute value=0.25

0.25 as a percent is 25%

8 0

2 years ago

Y-5=-1/2(x+7) (find the slope)

sashaice [31]

It's the slope-point formula:

$y-y_1=m(x-x_1)$

We have:

$y-5=-\dfrac{1}{2}(x+7)$

Therefore, the slope $m=-\dfrac{1}{2}$

7 0

3 years ago

Read 2 more answers