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nika2105 [10]
3 years ago
6

Point b is on ac between a and c. if ab is doubled and bc is also doubled, predict the effect on ac

Mathematics
1 answer:
Anton [14]3 years ago
6 0

Answer:

ac will also be doubled.

Step-by-step explanation:

We are given that the Point b is on line ac and lies between a and c.

ab is doubled

bc is also doubled

Now we have to predict the effect on ac.

Let ab= x

bc=y

ac=ab+BC

ac=x+y ----(A)

Now after increasing the length

AB =2x

BC=2y

AC=AB+BC

AC=2x+2y

AC=2(x+y)

AC=2ac (From eqn A)

Hence the length of ac will also be doubled up.

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. 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.

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Write the number in standard form. 600,000 + 30,000 + 2,000 + 700 +70
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4 0
2 years ago
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. (02.07) A particular plant root grows 3.5 inches per month. How many centimeters is the plant root growing per month? (1 inch
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3 years ago
Two methods are used to predict how many customers will call in for help in the next four days. The first method predicts the nu
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Answer:

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Step-by-step explanation:

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APE for First method = 61.93

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Then,

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