3 years ago

Half the sum of 8 and r

Mathematics

1 answer:

spayn [35]3 years ago

8 0

Ummm I need the full question to help...

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Sixty percent of the runners who ran the marathon finished the race. If fifteen runners finished, then how many runners ran in t

ZanzabumX [31]

Let they be x

$\\ \rm\Rrightarrow 60\%\: of\:x=15$

$\\ \rm\Rrightarrow \dfrac{3}{5}x=15$

$\\ \rm\Rrightarrow x=15\times \dfrac{5}{3}$

$\\ \rm\Rrightarrow x=5(5)$

$\\ \rm\Rrightarrow x=25$

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2 years ago

What is the answer to this question 3x+1=10

Angelina_Jolie [31]

Step-by-step explanation:

$3x+1=10 \\ \\ \therefore \: 3x = 10 - 1 \\ \\ \therefore \: 3x = 9 \\ \\ \therefore \: x = \frac{9}{3} \\ \\ \: \: \: \: \: \: \: \: \huge \purple { \boxed{\therefore \: x = 3}} \\ \\$

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3 years ago

4d + 5 >= 13 or 7d - 2 <12

vivado [14]

I'm guessing that the >= is a greater than or equal to sign, so the answer should be d>=2 and d<2, please tell me if I am wrong and I will do my best to correct it!

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4 years ago

Evaluate:Log2(1/16)

e-lub [12.9K]

Answer:

-4 i think

Step-by-step explanation:-4 i think

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3 years ago

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