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2 years ago

Which of the following phrases are inequalities?Choose 2 answers: A. (8 + f)(8 - f) > 36

Mathematics

1 answer:

sp2606 [1]2 years ago

4 0

Answer:

$\text{A. }(8+f)(8-f)>36\\\text{E. }64$

Step-by-step explanation:

An inequality must include a comparison symbol, one of <, >, ≤, ≥. Only choices A and E have that.

_____

Choices B and D are equations, not inequalities. Choice C is an expression, neither an equation nor an inequality.

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Use rounding to estimate the product.8 × 9.82

aleksley [76]

Answer:

8 * 9.82 ≈ 8 * 10 = 80

Step-by-step explanation:

9.82 ≈ 10

8 * 10 = 80

4 0

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

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

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

2 years ago

Plz urgent <br>inequalities

solmaris [256]

Answer:

X>-4

Y>-18

X>-7

I hope this helps

3 0

2 years ago

HELP LOOK AT THE PIC ( Write the number of the vertices) I FORGOT THIS SINCE YEARS AGO

Kisachek [45]

Answer:

3 vertices

Step-by-step explanation:

Vertices are the "points" of a 2D figure. In this case, we see the 2D figure as a triangle. There are 3 points on the triangle, so there are 3 vertices.

3 0

1 year ago

A computer rounded the number 129. 257 to the nearest hundredth what is this number rounded to the nearest hundredth

Ipatiy [6.2K]

129.26 because 7 is over 5

6 0

2 years ago