3 years ago

What is the simplified form for the following expression -(3y-9z)

Mathematics

1 answer:

Sonja [21]3 years ago

5 0

The answer is: -3y+9z

This is because you simply switch the sign for every number in the parentheses.

Hope this helps!

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11. The rectangle has a width of 8 in, a length of x-5 in, and an area of 16 in). Solve for x.

Angelina_Jolie [31]

Use the area of rectangle formula which is:

$\displaystyle \large \tt{A = width \times length}$

Given that:

area of rectangle = 16
width = 8
length = x-5

Substitute in the formula:

$\displaystyle \large{16 = 8 \times (x - 5)} \\ \displaystyle \large{16 = 8(x - 5)}$

Distribute 8 in the expression:

$\displaystyle \large{16 = (8 \times x) + (8 \times ( - 5))} \\ \displaystyle \large{16 = 8x - 40}$

Move -40 to another side and change from -40 to 40.

$\displaystyle \large{16 + 40 = 8x} \\ \displaystyle \large{56= 8x} \\$

Then move 8 to divide 56, leaving only x.

$\displaystyle \large{ \frac{56}{8} = x} \\ \displaystyle \large{7 = x} \\$

Hence, the answer is:

$\displaystyle \large \boxed{x = 7} \\$

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2 years ago

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Answer:

Step-by-step explanation:

i did it

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3 years ago

Change the repeating decimal to a fraction:<br> 0.376376376...

taurus [48]

Answer:

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Step-by-step explanation:

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3 years ago

Tell if the ordered pair is a solution of the system of inequalities.

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Answer:

top one yes, bottom one no

Step-by-step explanation:

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3 years ago

What is the range of the following number sequence 1,2,3,4,5,6,7,8,9

Lelechka [254]

Answer:

Step-by-step explanation:

To find range, subtract the lowest number(1) from the highest number(9)

highest-lowest

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Hope this helps! :)

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3 years ago

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