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3 years ago

HELPP PLEASE DUE TOMMOROW PLEASE ANSWER QUESTION B

Mathematics

1 answer:

marin [14]3 years ago

4 0

Answer:

28 non-blue marbles.

Step-by-step explanation:

Initial probability of choosing a blue marble = 4/12

Let the number of non-blue marbles to be added be x.

$\frac{4}{12+x} =\frac{1}{10}$

$12+x=40$ (cross multiply)

$x=28$

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Step-by-step explanation:

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2 years ago

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Draw an equilateral triangle of perimeter 10 centimetres.

3241004551 [841]

Answer:

See attachment for triangle

Step-by-step explanation:

Given

Shape: Equilateral triangle

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Required

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2 years ago

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Answer:

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2 years ago

I need help with this problem please?

user100 [1]

Answer:

Step-by-step explanation:

If ΔABC ~ ΔPQR

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3 years ago

Simplify the expression by combining like terms if possible. If not possible select already simplified. 4a^2+2a+4a^2-5

vichka [17]

So the expression is: $4 a^{2} + 2a + 4 a^{2} - 5$

You can combine like terms, which are terms that contain the same variables raised to the same power. That means you can combine the two $4 a^{2}$ . $4 a^{2} + 4 a^{2} = 8 a^{2}$ The other terms can't be combined.

Your final answer should be $8 a^{2} +2a-5$ .

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3 years ago