2 years ago

.Joline collects hockey cards.

Mathematics

1 answer:

shusha [124]2 years ago

3 0

Answer:

25 Cards

Step-by-step explanation:

If 5 cards is 20% and you only need 5 more then that means you have the other 80%. So you 20 80/20 which is 4. Then do 4x5=20 then add the 5 you still need.

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andrey2020 [161]

Answer:

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Step-by-step explanation:

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2 years ago

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Step-by-step explanation:

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2 years ago

1. Match the polynomial identity to the correct answer.

Katen [24]

Answer:

$a: (a-b)(a+b);b: (a-b)(a^{2}+ab+b^{2}); c: (a^{2} +2ab+b^{2}); d: (a+b)(a^{2}- ab+b^{2})$

Step-by-step explanation:

Given the expressions all that is required is to expand them (using the distributive property) to see which answers they match up to:

For a: $(a-b)(a+b)=a^{2} +ab-ab-b^{2} =a^{2}-b^2$

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(add like terms) c: $a^2+2ab+b^2$

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3 years ago

Rearrange the equation so w is the independent variable.<br> u-5=-4(w-1)

exis [7]

$u-5=-4(w-1) \\u=5-4(w-1)\\u=5-4w+4\\u=-4w+9$

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2 years ago

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balandron [24]

Answer:

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Step-by-step explanation:

9 squared + 40 squared = 41 squared, which follows Pythagorean theorem.

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2 years ago