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3 years ago

Alex, Toby and Samuel are playing a game together.

Mathematics

1 answer:

Shalnov [3]3 years ago

8 0

Answer:

1/9

Step-by-step explanation:

There are three places and three people.

Times them together for the total outcomes:

1/3 x 1/3= 1/9

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If a varies directly as b, and a = 28 when b = 7, find b when a = 5.

Reika [66]

Answer: Option B.

$b=\frac{5}{4}$

Step-by-step explanation:

If a varies directly with b then when a increases b it also increases by a factor k.

Then we can write that

$a = kb$

We know that when a = 28 then b = 7. So

$28 = k * 7$

$k=\frac{28}{7}$

$k=4$

Therefore the equation of proportionality is:

$a=4b$

So when $a=5$ then:

$5=4b\\\\b=\frac{5}{4}$

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Step-by-step explanation:

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3 years ago

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rosijanka [135]

Answer:

$6^{10}$

Step-by-step explanation:

We can use the following rule of surds to solve the problem:

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2 years ago

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saveliy_v [14]

I’m not 100% certain but i’m pretty sure 1:3 works

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