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stepan [7]
3 years ago
6

Rearrange formula to make x subject y=x²-2​

Mathematics
1 answer:
Pavel [41]3 years ago
6 0

Answer:

x=sqrt(y+2), -sqrt(y+2)

Step-by-step explanation:

y=x^2-2

x^2=y+2

x=sqrt(y+2), -sqrt(y+2)

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The volume of a cylinder is V = 1/3 πr2h. If the radius is doubled and the height is halved, what will be the ratio of the new v
ozzi
<span>V(o) = 1/3 πr²h - old volume
</span>V(n) = 1/3 π(2r)²(h/2)=1/3 π(2r)²(h/2)=1/3*4/2* πr²h=1/3*2* πr²h
V(n)/V(o)=1/3*2* πr²h/1/3 πr²h=2/1
V(n)/V(o)=2/1 - ratio
the volume will be doubled
8 0
3 years ago
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Bob wants to buy a TV that cost $500 plus 8% tax. He is getting a bonus of $45 and a birthday gift of $85 which he plans to use
Genrish500 [490]

Answer:

He needs to work for 40 whole hours

Step-by-step explanation:

In this question, we are tasked with calculating the amount a Tv will cost Bob in terms of the number of hours he needs to work.

Let’s look at the total cost he has to pay.

a. $500

b. 8% tax = 8/100 * 500 = $40

c. He is paying 2 bills of $35 each making a total of 2 * $35 = $70

The total amount he is to pay is thus; 500 + 40 + 70 = $610

Let’s look at his income ;

a. Bonus $45

b. Birthday gift $85

The total amount of money he has asides his salary to offset the bill is 45 + 85 = $130

The balance to pay from his salary would be $610 - $130 = $480

The number of hours he has to work since he earns $12 per hour would be 480/12 = 40 hours of work

5 0
3 years ago
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Studentka2010 [4]

Answer:

x=4y/5 + 24/5

Step-by-step explanation:

7 0
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If a=12 and b=23 what is the area of pencil decoration
Allushta [10]
I think the answer is 276
12 * 23 = 276
hope it helps
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3 years ago
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Please help me figure out what x is
ivolga24 [154]

Answer:

the answer is 58 your welcome

8 0
2 years ago
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