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Olegator [25]
3 years ago
11

Can you help me solve these two practice problems? If so, can you show me how you got the answers because I'm lost. Thanks!

Mathematics
1 answer:
densk [106]3 years ago
4 0
(-11,-19) all you have to do is make one variable like x the same in both equations and so they cancel out, then you can solve for y...and to get x, once you have the final answer for y...plug that into the equation and then solve x.
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Which choice is the correct answer for: 2.78 * 6?
amid [387]

Hello!

2.78 * 6 = 16.68

I hope this helps, and have a nice day!

8 0
3 years ago
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The gravitational force produced between any two objects kept 2.5×10^4 km apart is 580 N . At what distance should they be kept
DochEvi [55]

Answer:

Formula for gravitational force    F = G M1 * M2 / R^2  where G is the gravitational constant

F2 / F1 = (R1 / R2)^2 = 1/2         where F2 is the required force

R2 = (2)^1/2  R1     distance for R2 to be 1/2 force at R1

Since force is proportional to the square of the distance of separation, increasing the distance of separation by 2^2 will halve the force

7 0
3 years ago
A bookshelf is 42 inches long. How many books of length 1\frac{1}{2}1 2 1 ​ inches will fit on the bookshelf? Explain your reaso
Blababa [14]

Answer: See explanation

Step-by-step explanation:

Your question isn't well written but I saw an identical question:

A bookshelf is 42 inches long. Each book is 1 1/4 inches wide. How many books will fit on the shelf?

For us to solve this, we would divide the length of the bookshelf by the width of each book. This would be:

= 42 ÷ 1 1/4

= 42 ÷ 5/4

= 42 × 4/5

= 33 3/5

Therefore, the number of books that will fit on the shelf is 33.

7 0
2 years ago
(k + 3)by the power of 3​
kolezko [41]
Your answer is: 3k + 9
7 0
3 years ago
Find the measure of the missing angles .
maw [93]

Answer:

d = 90°

e = 41°

f = 139°

Step-by-step explanation:

d + 90° = 180° (Angles in linear pair)

-> d = 180° - 90°

-> d = 90°

e = 41° (vertical angles)

f + 41° = 180° (Angles in linear pair)

-> f = 180° - 41°

-> f = 139°

5 0
2 years ago
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