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V125BC [204]
3 years ago
13

The ratio of the length to the width of a picture is 5:2. The picture is enlarged so that its length is 15 inches now. What is t

he width of the enlarged picture?
A. 5 in.
B. 6 in.
C. 7 in.
D. 8 in.
Mathematics
1 answer:
Maru [420]3 years ago
8 0
The answer is B.
The ratio is multiplied by three so 5 times 3 is 15 and 2 times 3 is 6.
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The hardcover version of a book weighs 7 ounces while its paperback version weighs 5 ounces. Forty-five copies of the book weigh
konstantin123 [22]

Answer:

33 copies were paperback and 12 were hardcover.

Step-by-step explanation:

Let h represent the number of hardcover copies and p represent the number of paperback copies.

We know that the total number of copies was 45; this gives us the equation

h+p = 45

We know that each hardcover copy is 7 ounces; this gives us the expression 7h.

We also know that each paperback copy is 5 ounces; this gives us the expression 5p.

We know that the total weight was 249 ounces; this gives us the equation

7h+5p = 249

Together we have the system

\left \{ {{h+p=45} \atop {7h+5p=249}} \right.

We will use elimination to solve this.  First we will make the coefficients of the variable p the same; to do this, we will multiply the top equation by 5:

\left \{ {{5(h+p=45)} \atop {7h+5p=249}} \right. \\\\\left \{ {{5h+5p=225} \atop {7h+5p=249}} \right.

To eliminate p, we will subtract the equations:

\left \{ {{5h+5p=225} \atop {-(7h+5p=249)}} \right. \\\\-2h=-24

Divide both sides by -2:

-2h/-2 = -24/-2

h = 12

There were 12 hardcover copies sold.

Substitute this into our first equation:

12+p=45

Subtract 12 from each side:

12+p-12 = 45-12

p = 33

There were 33 paperback copies sold.

3 0
3 years ago
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What times what equals 19
andreyandreev [35.5K]
19 is prime meaning that only 1 and itself can multiply to get that number (excluding decimals and fractions)
so the answer would be 1 times 19

or if you want to multiply by a fraction to divide you could do
38 times 1/2=19
5 0
3 years ago
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The data shown are hourly wages of some employees of a small company. $5, $7, $8, $10, $24, $40 Which values, if any, are outlie
igor_vitrenko [27]
correct answer is "NONE" NOT $40. hOPE THIS HELPS!
3 0
3 years ago
A researcher records the change in weight (gained or lost) during the first semester of college for each individual in a group o
german

Answer:

Statistic

Step-by-step explanation:

Generally, when we talk about statistic, we are talking about the characteristic of a sample. A statistic can be said to be a value which is calculated or computed from the values in a sample.

By applying mathematical functions in this case addition and division to the values present in the sample, we have what is now known as statistic.

6 0
3 years ago
Can someone please help with this question
den301095 [7]

Answer:

here..

Step-by-step explanation:

1\4

4 0
3 years ago
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