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bazaltina [42]
3 years ago
8

Solve the equation. -5r-1=7r+5

Mathematics
2 answers:
irga5000 [103]3 years ago
8 0

Answer:

r=-1/2

Step-by-step explanation:

(-5*-1/2=2.5)( 2.5-1=1.5) (7x -1/2= -3.5)-3.5+5 =1.5

Ksivusya [100]3 years ago
3 0

Answer:

-1/2

Step-by-step explanation:

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Which term can be cancelled out of the expression​
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x+3

Step-by-step explanation:

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Then, since you have x+3 in the numerator and denominator, it will cancel out.

The steps are shown below:

\frac{7x}{5x+15} *\frac{x+3}{8} \\\\=\frac{7x}{5(x+3)} *\frac{x+3}{8} \\\\=\frac{7x}{5} *\frac{1}{8} \\\\=\frac{7x}{40}\\

Ive attached an image that shows an example of simplifying an expression using a the same technique.

5 0
4 years ago
the earths diameter through the equator is about 8,000 what is the earths estimated diameter written as a whole number multiplie
Sauron [17]

Answer:

To write 8000 miles in scientific notation, first find a natural number between 1 and 10.     (8)  

Now, figure out how many decimal places we have to move to the left.

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Now, write the number 8 multiplied by 10 to the third power.

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Step-by-step explanation:

7 0
3 years ago
All of the following expressions have the same value except
MrMuchimi

Answer:

1 - 4/5-(-1/5)

Step-by-step explanation:

1. - 4/5-(-1/5)

= -0.8+0.2 (if there is a minus sign inside and outside of the parenthesis, when we destroy that parenthesis, both the minus signs will be multiplied and becomes a (+).) (Making it to the percentile).

= -0.6

2. - 4/5-1/5

= -0.8-0.2

= -1

3. -(4/5+1/5)​

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6 0
3 years ago
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