-2(q-5)=10 what is q=

Mathematics

2 answers:

marissa [1.9K]3 years ago

5 0

Answer:

q=0

Step-by-step explanation:

-2(q-5)=10

Divide each side by -2

-2/-2(q-5)=10/-2

q-5 = -5

Add 5 to each side

q-5+5 = -5+5

q=0

Setler [38]3 years ago

4 0

Answer:

Step-by-step explanation:

1.) Use Distributive Property (multiply -2 by the values in parentheses): -2q+10=10

2.) Subtract 10 from both sides to get 10 to the right side, helping to isolate variable q

-2q+10-10=10-10

3.) Simplify

-2q=0

4.) Divide both sides by -2 to isolate and solve q

-2q/-2=0/-2

5.) Simplify

q=0

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One light-year equals 5.9 x 1012 miles. How many light-years are in 6.79

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Option B

The number of light years in $6.79 \times 10^{16}$ miles is 11508 light years

<em><u>Solution:</u></em>

Given that,

One light-year equals 5.9 x 10^12 miles

Therefore,

$1 \text{ light year } = 5.9 \times 10^{12} \text{ miles }$

To find: Number of light years in $6.79 \times 10^{16}$ miles

Let "x" be the number of light years in $6.79 \times 10^{16}$ miles

Then number of light years in $6.79 \times 10^{16}$ miles can be found by dividing $6.79 \times 10^{16}$ miles by miles in 1 light year

$\text{Number of light years in } 6.79 \times 10^{16} miles = \frac{6.79 \times 10^{16}}{5.9 \times 10^{12}}\\\\\text{Use the law of exponent }\\\\\frac{a^m}{a^n} = a^{m-n}\\\\\text{Number of light years in } 6.79 \times 10^{16} miles = \frac{6.79}{5.9} \times 10^{16-12}\\\\\text{Number of light years in } 6.79 \times 10^{16} miles = 1.1508 \times 10^4\\\\\text{Number of light years in } 6.79 \times 10^{16} miles = 11508$