-7x + 13 HELP I WILL CHOOSE BRAINLIEST TO BEST ANSWER

Mathematics

2 answers:

Novay_Z [31]3 years ago

7 0

Answer:

-20x

Step-by-step explanation:

Leni [432]3 years ago

3 0

search it up than you will get the correct answer

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Mr. McGregor has discovered that a large dog can destroy his entire garden in 2 hours and that a small boy can do the same job i

mash [69]

Answer: -1

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3 years ago

Icy River increased the price of a $1.15 cola by 15%. Find the increase in price and the new price. round to the nearest cent

madam [21]

15% x
100 1.15 X is your variable, your unknown number and 15% has to always be over 100 , Then you have to cross multiply and divide 100 because that is the only number basically you have to just multiply across and divide 100 to make it to the nearest cent you have to round the last two numbers after the decimal Representing money.. Hope this helps!!

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3 years ago

the hardcover version of a book weighs 7 ounces while its paperback version weighs 5 ounces. Forty-five copies of the book weigh

Nuetrik [128]

Keywords:

<em>System of equations, variables, hardcover version, paperback version, books </em>

For this case we must construct a system of two equations with two variables. Let "h" be the number of hardcover version books, and let "p" be the number of paperback version books. If the hardcover version of a book weighs 7 ounces and the paperback version weighs 5 ounces, to reach a total of 249 ounces we have:

$7h + 5p = 249$ (1)

On the other hand, if there are Forty-five copies of the book then:

$h + p = 45$ (2)

If from (2) we clear the number of books paperback version we have:

$p = 45-h$

As each paperback version book weighs 5 ounces, to obtain the total weight of the paperback version books, represented by "x" in the table shown, we multiply $5 * p = 5 (45-h)$