3 years ago

When adding two negative integers, how do you determine whether the answer will be positive or negative?

Mathematics

1 answer:

Alenkinab [10]3 years ago

3 0

If it's already a negative number it's going to stay as a negative number

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For triangle ABC with sides a,b and c the law of cosines states

grigory [225]

Answer:

SAS

Step-by-step explanation:

Looking for the third side given the other two sides and the angle between them

c² = a² + b² - 2abcosC

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3 years ago

Use a minimum of two sentences to describe the process for writing the ln(x)=5 in exponential form.

Alenkinab [10]

In(x) =5
it's base is e
so x = e^5 is the answer

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4 years ago

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12) Add the fractions, and simplify if possible.<br><br> (y+7)/(y^2-y-12) - 2/(y^2-9)

lianna [129]

Answer:

$\dfrac{y^2+2y-13}{(y-4)(y+3)(y-3)}$

Step-by-step explanation:

Given the expression

$\dfrac{y+7}{y^2-y-12}-\dfrac{2}{y^2-9}$

First, factor each denominator:

1. $y^2-y-12=y^2-4y+3y-12=y(y-4)+3(y-4)=(y-4)(y+3)$

2. $y^2-9=(y-3)(y+3)$

Now the expression is

$\dfrac{y+7}{(y-4)(y+3)}-\dfrac{2}{(y-3)(y+3)}$

Now, multiply the first numerator by (y-3) and the second by (y-4) and write the result as a fraction with denominator $(y-4)(y+3)(y-3):$

$\dfrac{(y+7)(y-3)-2(y-4)}{(y-4)(y+3)(y-3)}=\dfrac{y^2-3y+7y-21-2y+8}{(y-4)(y+3)(y-3)}=\dfrac{y^2+2y-13}{(y-4)(y+3)(y-3)}$

This fraction cannot be simplified more.

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3 years ago

Ben saved $66 and spent $30. What percentage of his money did he spend? Round your answer to the nearest whole percent. Can some

AleksandrR [38]

Answer:

55%

Step-by-step explanation:

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3 years ago

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COPY THE TABLE BELOW IN YOUR NOTEBOOK. THEN ROUND EACH ITEM TO THE NEAREST HUNDREDTHS AND THOUSANDS

kobusy [5.1K]

What’s the items number. ? When rounding everything in front of the decimal find the place value it wants you to round then if it’s 5 or below round the the lowest whole number. If it’s behind a decimal you would do the same thing. It’s the number is higher than 5 round it up.

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3 years ago