3 years ago

-2x-9y=-25 -4x-9y=-23 I need there to be a step-by-step explanation of how you solved it.

Mathematics

1 answer:

madreJ [45]3 years ago

4 0

solved what I didn't solve anything

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Consider the expression below. 1.3 + 1.25

olga55 [171]

Answer:

First, let's find out the sum;

1.30 + 1.25 = 2.55, is rational, so A

Step-by-step explanation:

The reason being this is because, 2.55 is a terminating decimal meaning that the decimal place does not go on forever.

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2 years ago

How to simplify an expression with a negative exponent

svetlana [45]

Answer:

Step-by-step explanation:

An negative exponent seems hard, but it really isn't!

Let's say you have $2^{-3}$

All you do is inverse the expression, or find the reciprocal. When you do this the exponent changes to positive .

$\frac{1}{2^{3} }$

$2^{3}$ simplifies into 8. So, the result is

$\frac{1}{8}$

Hope this helps! Please mark as brainliest, thanks!

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3 years ago

The year the Greek city of Helike disappeared is -1/5 times the year the US civil war ended. Let w represent the year the war en

Lostsunrise [7]

Answer:

ok so

-1/5x=w

w=1865

so -1/5x=1865

x=-9325

Hope This Helps!!!

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2 years ago

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A number plus 18 is less than 28

andrezito [222]

Written as an inequality- x+18<28

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2 years ago

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I need help, thank you

natali 33 [55]

Plot it on point (-2,-1)

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3 years ago

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