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3 years ago

How do i solve this?

Mathematics

1 answer:

Damm [24]3 years ago

6 0

From the ratio given you can determine that m is proportional to 1/(r^3). You can write this as m = k * 1/(r^3), k being your constant of proportionality. Then use this to calculate the next parts of the question.

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5(y-4)=7(2y+1) I need the answer

8_murik_8 [283]

Answer: $y = -3$

Move all terms containing y to the left, all other terms to the right

Add -14y to each side of the equation

$-20 + 5y + -14y = 7 + 14y + -14y$

Combine like terms: 5y + -14y = -9y

$-20 + -9y = 7 + 14y + -14y$

Combine like terms: 14y + -14y = 0

$-20 + -9y = 7 + 0\\-20 + -9y = 7$

Add '20' to each side of the equation

$-20 + 20 + -9y = 7 + 20$

Combine like terms: -20 + 20 = 0

$0 + -9y = 7 + 20\\-9y = 7 + 20$

Combine like terms: 7 + 20 = 27

$-9y = 27$

Divide each side by -9

$-9y/9=27/-9\\y=-3$

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3 years ago

ryan takes a 30 centimeter by 72 centimeter sheet of paper and cuts from one corner of the paper to diagonally opposite corner.

nikklg [1K]

Answer:

178

Step-by-step explanation:

Use Pythagorean Theorem to find the Hypotenuse

30^2+72^2=78^2

Use perimeter formula

a+b+c

38+72+30

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3 years ago

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guajiro [1.7K]

This is what I put in my response

For me I thought that algebra was better. I loved algebra I mean math is math somethings in math are hard, somethings are easy, sometimes in math you will come across something that seems impossible. Sometimes you will fly thru but, what makes the journey bearable is the people around you. Why I think algebra is better is because of the people that were in math course with me and my teacher because. The teachers make all the difference.

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3 years ago

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Wewaii [24]

Answer:

D. 3y + 1

Step-by-step explanation:

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2 years ago

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I will mark either the best or the first answer. Btw, please don't answer with nonsense.

boyakko [2]

Answer:

6.8, 26.2, -7.8, -10.2, 2.6, -12.9

Step-by-step explanation:

20. is 6.78232 Rounded answer is 6.8

21. 26.172504657 rounded to the nearest tenth is 26.2

22. is -7.8102496759 rounded to the nearest tenth is -7.8

23. -10.246950766 rounded to the nearest tenth is -10.2

24. is 2.5980762114 rounded to the nearest tenth is 2.6

25. -12.942179106 rounded to nearest tenth is -12.9

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3 years ago

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