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abruzzese [7]
3 years ago
7

1) Which expression is equal to

Mathematics
1 answer:
mel-nik [20]3 years ago
6 0

Answer:

None of the expressions in the option is equal to 10 x(13).

Step-by-step explanation:

The answer can be verified by calculating the values of the expression in the question, those of each options, and then compare as follows:

Value of the expression = 10 x (13) = 10 x 13 = 130

Therefore, we have:

A. 10 + (1+3) = 10 + 4 = 14 \neq 130

B. (10 x 1)+3 = 10 + 3 = 13 \neq 130

C. 10 + (1x3) = 10 + 3 = 13 \neq 130

D. (10 * 1)3 = 10 * 3 = 30 \neq 130

Based on the calculations above, none of the expressions in the option is equal to 10 x(13).

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In its Fuel Economy Guide for 2016 model vehicles, the Environmental Protection Agency gives data on 1170 vehicles. There are a
Nady [450]

Answer:

a. 19.68 miles per gallon.

b. 26.32 miles per gallon.

Step-by-step explanation:

Mean gas mileage (μ) = 23.0 mpg

Standard deviation (σ) = 4.9 mpg

In a normal distribution, for any length X, the z-score is determined by the following expression:

 z=\frac{X-\mu}{\sigma}

In a normal distribution, the 25th percentile  (first quartile) of a normal distribution has a corresponding z-score of z = -0.677 and the 75th percentile  has a corresponding z-score of z = 0.677

a. The first quartile of the distribution of gas mileage is

-0.677=\frac{X_{25}-23}{4.9}\\X_{25}=19.68\ mpg

19.68 miles per gallon.

b. The third quartile of the distribution of gas mileage is

0.677=\frac{X_{25}-23}{4.9}\\X_{25}=26.32\ mpg

26.32 miles per gallon.

5 0
3 years ago
What is the appropriate unit to measure the capacity of a hand sanitizer bottle
Arada [10]
1. Pint
2. Gallon

Hope this helps.
8 0
3 years ago
A cube with sides numbered 1 to 6 is rolled 300 times. What is the best prediction for the number of times that a 1 or 2 would b
Leno4ka [110]
The answer is A.

Divide 300 by the number of faces of a cube.

Since there are 6 faces on a cube then we divide it.

300 ÷ 6 = 50.

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Hope this helps :)
7 0
3 years ago
1/3(one over three) times 2/5.SIMPLIFYYYYY
slamgirl [31]
One over fifthteen...................................
6 0
3 years ago
(Geometry) PLZ HELP ASAP
Alborosie

Answer:

<em>The height of the cylinder 'h' = 4 inches</em>

Step-by-step explanation:

<u><em>Explanation</em></u> :-

<em>Given diameter  of the cylinder ' d' = 10 inches</em>

 Diameter  of the cylinder    <em>d  = 2 r </em>

<em>Radius of the cylinder </em>

<em>                               </em>r = \frac{d}{2} = \frac{10}{2} = 5

Given Volume of the cylinder 'V' = 314 cubic inches

<em>Volume of the cylinder Formula</em>

<em>                                       V = π r² h</em>

                                  3 14  = 3.14 (5)² h

                                 h = \frac{314}{3.14 X 25}

                              <em>  h =  4</em>

<em>The height of the cylinder 'h' = 4 inches</em>

5 0
3 years ago
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