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4 years ago

Look at this expression.

Mathematics

1 answer:

g100num [7]4 years ago

4 0

Multiply x and 3

Multiply x and 1

The x just gets copied along.

The answer is x

3*x evaluates to 3x

Because of the minus sign

3x becomes - 3x

The answer is -3x

Multiply y and 2

Multiply y and 1

The y just gets copied along.

The answer is y

2*y evaluates to 2y

-3*x-2*y evaluates to -3x-2y

The answer is -3x-2y-2

-3*x-2*y-2 evaluates to -3x-2y-2

so the first one is right

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Factor -22 out of 15.4b -6.6

valina [46]

Answer:

-7b+3

Step-by-step explanation:

first step you will find numbers if you take -2.2 to get those numbers

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3 years ago

Help answer asap pls ---------

Reika [66]

Answer:

d = 5

Step-by-step explanation:

We want to know what d would be when x = -1, so we can start off by plugging in -1 for x to get the following equation: $\sqrt{8 - (-1)} = 2(-1)+d$ . On the left hand side, 2 negatives become a positive sign, so the -(-1) becomes a +1, and 8+1 would equal 9. On the right hand side, we just multiply 2 and -1 to get -2. So, the equation now looks like this: $\sqrt{9} = d-2$ . We know that $\sqrt{9}$ = 3, so we would get 3 = d-2. THen we would add 2 to both sides to get d = 5. Hope this helps!

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3 years ago

5.which of the following ordered pairs is a solution of the given system of linear equations

liq [111]

Answer:

the answer is d

Step-by-step explanation:

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3 years ago

t takes Franklin 14 hours to make a 200-square-foot cement patio. It takes Scott 10 hours to make the same size patio. Which equ

Tasya [4]

The efficiency of Franklin: 200/14 ft^2/hr

Scott: 200/10 ft^2/hr

So together: 200 / (200/14 + 200/10) = 5.83 hours

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3 years ago

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Rina8888 [55]

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Step-by-step explanation:

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