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3 years ago

K-9=-3 ???????????????

Mathematics

2 answers:

Delicious77 [7]3 years ago

7 0

Answer:

k = 6

Step-by-step explanation:

k -9 = -3

add 9 to both sides

and you get

k = 6

wel3 years ago

3 0

You need to get K by itself and to do that do the opposite of -9 which is +9 and do the +9 to the -3 and positive 9 plus negative 3 is 6 so it it positive 6.
K=6

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Justine charges $25 to wash a dog. She washed 5 dogs on Saturday and then some more on Sunday. She made $325 for the weekend. Ho

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Answer

• A. Equation: 25(5 + x) = 325

• B. Answer: 8 dogs

Explanation

Given

• Charge to wash a dog: $25.

• She washed 5 dogs on Saturday and then some more on Sunday.

• She made $325 for the weekend.

Procedure

She charges $25 per wash, she made $325 for the weekend, and we know that on Saturday she washed 5 dogs, but we don't know how many she washed on Sunday. Thus, we have to build an equation in which the number of dogs washed on Sunday is represented by x (as we do not know the real number).

Considering that the total money made has to be equal to the multiplication of the charge times the dogs washed, the equation is:

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0. Multiplying the parenthesis

$125+25x=325$

<em>2. Subtracting 125 from both sides of the equation</em>

$125-125+25x=325-125$ $25x=200$

<em>3. Dividing both sides of the equation against 25</em>

$\frac{25x}{25}=\frac{200}{25}$ $x=8$

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