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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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attashe74 [19]

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4 years ago

You’re given two side lengths of 3 centimeters and 5 centimeters. Which measurement can you use for the length of the third side

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3 years ago

A point located at (0, -6) is the same distance from 0 as the point located at (0, 6). True or False

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Check the picture below.

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4 years ago

Can someone help with #5 above and provide steps? I will give brainliest!

Leona [35]

Answer:

5461

Step-by-step explanation:

You can recognize this as the sum of 7 terms of a geometric series with first term 1 and common ratio 4.

That sum is given by ...

$S_n=a_1\cdot\dfrac{r^n-1}{r-1}$

where a1 is the first term and r is the common ratio.

Filling in the numbers, we have ...

$S_7=1\cdot\dfrac{4^7-1}{4-1}=\dfrac{16384-1}{3}=5461$

The sum is 5461.

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3 years ago

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