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Anastaziya [24]
3 years ago
8

A scale drawing of a rectangle painting is 12 inches long and 8 inches tall. The actual painting is 12 feet tall. What is the sc

ale of the drawing? What is the perimeter of the actual painting? What is the area of the actual painting?
Mathematics
1 answer:
love history [14]3 years ago
5 0

Answer:

x = 18

Step-by-step explanation:

\frac{8}{12}  = \frac{12}{x}

  • then cross-multiply

8x = 12 * 12

8x = 144

\frac{8x}{8} = \frac{144}{8}

x = 18

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Simplify the expression b - 7 + b - 8
natulia [17]

Answer:

2b - 15

Step-by-step explanation:

b - 7 + b - 8  

You combined the two b's correctly, but didn't combine the two constants, -7 and -8.  

Those combine to   -7 + (-8)  = -7 - 8  = -15,  so the final answer is

2b - 15

you have -7 and are subtracting 8 more, so you are moving 8 units left on the number line, so it has to get more negative.

3 0
3 years ago
Plz help in a quiz and have a time limit
DIA [1.3K]

Answer:

the forth answer

Step-by-step explanation:

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3 years ago
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Which decimal is equivalent to 16/100 ?
choli [55]
Just divide 16 by 100: 16/100=0.16, So, the answer is C. 0.16
8 0
3 years ago
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<img src="https://tex.z-dn.net/?f=5x-%20%5Cdfrac%7B%20%5Csqrt%7B%209%20%7B%20x%20%7D%5E%7B%202%20%7D%20-6x%2B1%20%5Cphantom%7B%5
Morgarella [4.7K]

Answer:

=5x+1          or          =5x-1

Step-by-step explanation:

One is given the following equation:

5x-\frac{\sqrt{9x^2-6x+1}}{1-3x}

The problem asks one to simplify the expression, the first step in solving this equation is to factor the equation.  Rewrite the numerator and denominator of the fraction as the product of two expressions. Remember the factoring patterns:

(a-b)^2=a^2-2ab+b^2

=5x-\frac{\sqrt{9x^2-6x+1}}{1-3x}

=5x-\frac{\sqrt{(3x-1)^2}}{-(3x-1)}

Now simplify the numerator. Remember, taking the square root of a squared value is the same as taking the absolute value of the expression,

=5x-\frac{\sqrt{(3x-1)^2}}{1-3x}

=5x-\frac{|3x-1|}{-(3x-1)}

Rewrite the expression without the absolute value sign in the numerator. Remember the general rule for removing the absolute value sign:

|a-b|\\=a -b           or           (-a-b) = b-a

=5x-\frac{|3x-1|}{-(3x-1)}

=5x-\frac{3x-1}{-(3x-1)}          or          =5x-\frac{-(3x-1)}{-(3x-1)}

Simplify both expressions, reduce by canceling out common terms in both the numerator and the denominator,

=5x-\frac{3x-1}{-(3x-1)}          or          =5x-\frac{-(3x-1)}{-(3x-1)}

=5x-(-1)          or          =5x-(1)

Simplify further by rewriting the expression without the parenthesis, remember to distribute the sign outside the parenthesis by the terms inside of the parenthesis; note that negative times negative equals positive.

=5x-(-1)          or          =5x-(1)

=5x+1          or          =5x-1

6 0
3 years ago
Orly uses 2 cups of raisins for every 8 cups of trail mix she makes. How many cups of trail mix will she make is she uses 12 cup
allsm [11]
You have a 2:8 ratio, or 1:4.  Since you have 12 cups of raisins, you're going to get the answer 48.
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3 years ago
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