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Anna71 [15]
2 years ago
8

45 Points! Please explain your answer! Brainliest to whoever does the best!

Mathematics
1 answer:
Alex73 [517]2 years ago
7 0

Answer:

\sf \boxed{\sf \frac{3}{2} } \ miles \  per  \ day

Explanation:

\sf unit \ rate: \dfrac{Total \ distance \  (miles)}{Total \ time \ taken \ (day)}

Here given:

Total \ Distance : 8\dfrac{1}{4} \ or \ 8.25

Total \ Time \ taken : 5\dfrac{1}{2} \ or \ 5.5

Find unit rate:

\rightarrow \sf unit \ rate: \dfrac{8.25 }{5.5 }

\rightarrow \sf unit \ rate: 1.5 \ miles \ per \ day

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3rd

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If a spherical ball is enlarged so that its surface area is 9 times greater than its original surface area, then the original ra
luda_lava [24]
The surface area of a sphere is A = 4 \pi r^{2} and if the original S.A was is enlarged to have it 9 times greater, the radius would be multiplied by 3 or roughly 2.99626 rounded off to 3.0. 

For example, let us assign values.
Let A=90

A= 90*9 = 810

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6 0
3 years ago
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VladimirAG [237]

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f(a) = 2a^2 + 4a + 5

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You just need to replace the "x" with the "a".

7 0
4 years ago
I need to know the answer
ladessa [460]

Answer:

b

Step-by-step explanation:

Answer: option (b)

1 billion = 1, 000, 000, 000

In scientific notation, a number is rewritten as a simple decimal multiplied by 10 raised to some power n.

10 =101

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please give me brilliant answer

thank you

5 0
3 years ago
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