3 years ago

You earn $35 for washing 7 cars. How much do you earn for washing 4 cars?

Mathematics

1 answer:

Vesnalui [34]3 years ago

7 0

You get 20$ dollars. Because if you divide 35 by 7 you get 5 then times 5*4=20

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Ernie bought 3 12-packs of regular cola, 4 12-packs of diet cola, and 2 6-packs of orange soda. how many cans did he buy?

dalvyx [7]

Ernie bought 96 can of soda

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3 years ago

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(X-3) (2x-3)= (x-3) (x+1) solve for x

yanalaym [24]

$(x - 3)(2x - 3) = (x - 3)(x + 1)$

Do the multiplication both sides,

$2 {x}^{2} - 9x + 9 = {x}^{2} - 2x - 3$

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$2 {x}^{2} - {x}^{2} - 9x + 2x + 9 - 3 = 0 \\ {x}^{2} - 7x + 6 = 0$

Factorise this polynomial

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So what we notice here is when you're multiplying two numbers you're getting 0 as answer.

So one of them must be 0.

If (x-1) is 0
then x = 1

similarly,

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then, x= 6.

So the possible values of x are 1 and 6.

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3 years ago

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Suppose that you roll two dice. You will be paid $20 if you roll a double. You will not receive anything for any other outcome.

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3 years ago

Making x the subject of a formula.

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Find the quotient of 5+4i/6+8i , and express it in the simplest form

Sergio [31]

Remember: i² = -1

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Hope this helps

7 0

4 years ago