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3 years ago

What is 4 - 2 + 8 divided by 2

Mathematics

2 answers:

andriy [413]3 years ago

7 0

Answer: 5

example:

4-2=2+8=10/2
=(2)

Nimfa-mama [501]3 years ago

3 0

Answer: 5

Step-by-step explanation:

4-2+8/2

2+8/2

10/2

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An open box is to be constructed so that the length of the base is 3 times larger than the width of the base. If the cost to con

natta225 [31]

Answer:

Step-by-step explanation:

Let assume that the volume = 88 cubic feet

Then:

$L = 3w --- (1)volume = l \times w \times h \\ \\ 88 = (3w) \times w \times h \\ \\ 3w^2 h= 88 \\ \\ h = \dfrac{88}{3w^2}--- (2) \\ \\$

The construction cost now is:

$C = 4(l \times w) + 2 ( w \times h) + 2(l \times h) \\ \\ C = 4(3w^2) + 2(w \times \dfrac{88}{3w^2}) + 2(3w \times \dfrac{88}{3w^2}) \\\\ C = 12w^2 + \dfrac{176}{3w} + \dfrac{176}{w}$

Now, to determine the minimum cost:

$\dfrac{dC}{dw}= 0 \\ \\ \implies 24 w - \dfrac{176}{3w^2}- \dfrac{176}{w^2}=0 \\ \\ 24 w ^3 = \dfrac{176}{w^2}(\dfrac{1}{3}+1) \\ \\ 24 w ^3 = \dfrac{176(4)}{3} \\ \\ w^3 = \dfrac{88}{3(3)}$

$w = \dfrac{88}{3(3)}^{1/3} \ feet$

Now;

$length = 3 ( \dfrac{88}{3(3)})^{1/3} \ feet$

$height = ( 88})^{1/3} (3)^{1/3} \ feet$

6 0

3 years ago

A 25-foot long ladder is propped against a wall at an angle of 18° with the wall. Which diagram correctly represents this scenar

lubasha [3.4K]

Answer:

The answer is B I just took the test:)

Step-by-step explanation:

3 0

3 years ago

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Is 513 a composite number?

Mrac [35]

Answer:

yes, since 513 has more than two factors

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Step-by-step explanation:

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3 years ago

3/19 of a quantity is equal to nothing of the quantity.

Dima020 [189]

Answer:

Step-by-step explanation:

3/19x = 0

x= 0 * 19/3

x = 0

4 0

4 years ago

On a piece of paper, use a protractor to construct △ABC with m∠A=30° , m∠B=60° , and m∠C=90° .

ANEK [815]

Answer:

C) BC < AB

D) BC < AC

Ste p-by-step explanation:

We are given the following information in the question:

$\angle A = 30^\circ\\\angle B = 60^\circ\\\angle C = 90^\circ$

This means that the side opposite to the right angle in the triangle is AB.

Since, the side opposite to the right angle is the hypotenuse and is the longest side of the triangle, thus AB cannot be shorter than any other side of the triangle.

Hence, option C is correct

BC < AB

Also, in the triangle we have,

$tan~ 60^\circ = \displaystyle\frac{\text{Perpendicular}}{\text{Base}} = \frac{AC}{BC} = \frac{\sqrt3}{1}\\\\\Rightarrow AC > BC$

Hence, option D) is correct

BC < AC

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3 years ago

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