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Sidana [21]
2 years ago
13

Find the scale factor that was used to change

Mathematics
2 answers:
Scrat [10]2 years ago
6 0

Answer:

C) 1/5

Step-by-step explanation:

original value = 25"

scaled value = 5"

To find the scale factor, find the number that muliplies 25 to become 5:

⇒ 25 × 1/5 = 5

Therefore, the scale factor is 1/5

avanturin [10]2 years ago
4 0

Answer:

C. 1/5

Step-by-step explanation:

Original * scale factor = Scaled

25 * SF = 5

Divide each side by 25

25/25 * SF = 5/25

SF = 1/5

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Find k so that the three equations 3x-y=2, 2x+8=3y, and y=kx have a common solution
andriy [413]
2x+8=3kx (3k-2)x+8=0
3x-kx=2. (3-k)x-2=0
3k-2)x+10=3-k)x
4k-5=10/x
///////
3x-y-2=2x+8-3y
X+2y-10=0
X+2kx-10=0
K=(10-x)/2x
8 0
3 years ago
. The mean width of 12 iPads is 5.1 inches. The mean width of 8 Kindles is 4.8 inches. a. What is the total width of the iPads?
UkoKoshka [18]

Answer:

a) 61.2, b) 38.4 and c) 4.98

Step-by-step explanation:

Given:

The mean width of 12 I-Pads is 5.1 inches.

The mean width of 8 Kindles is 4.8 inches.

Question asked:

a. What is the total width of the I-Pads?

b. What is the total width of the Kindles?

c. What is the mean width of the 12 I-Pads and 8 Kindles?

Solution:

<u>As we know:</u>

<u />Mean =\frac{Sum\ of\ observations}{Number\ of\ observations}\\ \\ Mean\ width =\frac{Sum\ of\ width\ of\ all \ I-pad}{Number \  of\ I-pad}

5.1=\frac{Sum\ of\ width\ of\ all\ I-pad}{12} \\ \\ By \ cross\ multiplication\\ \\ Sum\ of\ width\ of\ all\ I-pad}=5.1\times1 2\\ \\ Sum\ of\ width\ of\ all\ I-pad}= 61.2

a) Thus, the total width of the I-Pads are 61.2 inches.

Mean\ width =\frac{Sum\ of\ width\ of\ all\ Kindles}{Number \  of\ Kindles}

4.8=\frac{Sum\ of\ width\ of\ all\Kindles}{8} \\ \\ By \ cross\ multiplication\\ \\ Sum\ of\ width\ of\ all \ Kindles=4.8\times8\\ \\ Sum\ of\ width\ of \ all\ Kindles}=38.4

b) Thus, total width of the Kindles are 38.4 inches.

Combined width of both I-pad and Kindles = 61.2 + 38.4 = 99.6 inches

Combined number of observations = 12 + 8 =20

Combined mean of width of the 12 I-Pads and 8 Kindles = Combined width of both I-pad and Kindles \div Combined number of observations

Combined mean of width of the 12 I-Pads and 8 Kindles = \frac{99.6}{20} =4.98\ inches

c) Thus, the mean width of the 12 I-Pads and 8 Kindles is 4.98 inches.

5 0
3 years ago
A bag contains 35 coins, some dimes and some quarters. The total amount of money in the bag is $4.85. How many dimes and how man
miskamm [114]

Answer:

9 quarters and 26 dimes

Step-by-step explanation:

your welcome :)

5 0
9 months ago
What is greater 5.3 or 5.30
Simora [160]
5.30 because 3 is smaller than 30
7 0
3 years ago
Read 2 more answers
Please help I have to turn this in by the end of the night
dedylja [7]

Answer:

3 subtracted from the product of 7 and a number b

3 subtracted= -3

product of 7 and a number b= 7b

put those together:

7b-3

hope this helps, also what grade is this

3 0
3 years ago
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