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Lunna [17]
3 years ago
13

Calculate the scale factor. A. k=1/7 B. k=5/7 C. k=7/5 D. k=5

Mathematics
1 answer:
Shtirlitz [24]3 years ago
6 0

Answer is Option B = 5/7

Explanation:

A scale factor is a number which scales, or multiplies, some quantity. In the equation y = Kx, K is the scale factor for x. K is also the coefficient of x, and may be called the constant of proportionality of y to x.  

For big pictures or maps, images should be drawn without affecting the shape in a small paper.  Hence dimension of x is reduced to y with constant proporiton k which is scale factor

Here we find that original length of PC = 21

In image P'C = 15

Hence scale factor=15/21 = 5/7

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Marley had $120 to buy books. She purchased 6 books and has $18 left.<br> How much was each book?
Hatshy [7]

Answer:

$17

Step-by-step explanation:

If Marley had $120 to buy books and has a remainder of $18 left, then you would subtract 18 from 120 first.

120 - 18 = 102

Next you would divide.

102/6 = 17

The price of each book was $17.

3 0
2 years ago
Which number will make the two fractions equivalent 42/50 84/?
Alenkinab [10]

Answer:

Step-by-step explanation:

84 is twice 42

Multiply the numerator and the denominator of 42/50 by 2:

42/50 = (42×2)/(50×2) = 84/100

5 0
3 years ago
Read 2 more answers
A technician is testing light bulbs to determine the number of defective bulbs. The technician records the table below to show t
Kruka [31]

Answer:

The ratio of the number of bulbs tested to defective bulbs is always 14 to 1.

<u><em>What is the unitary method?</em></u>

The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value.

We generally expect industrial processes to produce defects at about the same rate, the proportion of the defective product is generally considered to be a remain constant.

Here, the proportion of defective bulbs is:

1/14 = 2/28 = 6/84

So, it will be 24/336.

The ratio of the number of bulbs tested to defective bulbs is expected to remain constant at about 14.

Please vote for Brainliest and I hope this helps!

4 0
2 years ago
Simplify 10 – 3x – 13 + 5x<br><br> A. 2x – 3<br><br> B. 1<br><br> C. 3 – 3x<br><br> D. 3 – 2x
sukhopar [10]
D ..................................................................................................................
7 0
3 years ago
Read 2 more answers
What is the quotient? Will give brainliest and will report absurd answers.
coldgirl [10]

Answer:

D

Step-by-step explanation:

When dividing fractions, multiply the first number by the reciprocal of the second number

2/5 ÷ 1/3

First, find the reciprocal of the second number: 1/3

To find the reciprocal, flip the numerator (top number) and denominator (bottom number)

1/3-->3/1

Now, multiply 2/5 and 3/1

2/5 * 3/1

Multiply across the numerators and denominators

6/5

5 0
3 years ago
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