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frosja888 [35]
3 years ago
8

What would be the first step to solve the equation for r ? 7 = 15 +r

Mathematics
1 answer:
Oxana [17]3 years ago
6 0

Answer:

the first step should be of subtracting 15 from 7

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If the diameter of a hockey rink is 250 ft what is the surface area of the sphere?
Lady bird [3.3K]

Answer:

62,500 pi

Step-by-step explanation:

diameter = radius + radius

d = 2r

r = d/2

A = 4pi r^2

= 4 pi (d/2)^2

= 4pi d^2/4

= 4pi* 250^2/4

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= 62,500 pi

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Eight oranges cost $1.00.How much will 5 dozen oranges cost?
Nutka1998 [239]
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3 years ago
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Please help I'm gonna cry.​
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olganol [36]

a cheap way to go about it is, let's do away with the denominators, and we'll do so by simply multiplying both sides by the the LCD of all fractions, in this case, that'd be "ab", so we multiply both sides by "ab".


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8 0
3 years ago
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