3 years ago

7 copies of the sum of 8 and 4

Mathematics

1 answer:

tiny-mole [99]3 years ago

3 0

The answer is 84 because 8+4=12 12x7=84

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A college student completed some courses worth 3 credits and some

-BARSIC- [3]

Answer:

A. 13

Step-by-step explanation:

Note: It seems typo in the question. 5% should read 59.

Let 3 credit courses = x, 4 credit courses = y

As per given we have following equations:

x + y = 18
3x + 4y = 59

Solve the system by elimination. Multiply the first equation by 4 and subtract the second one:

4(x + y) - (3x + 4y) = 4(18) - 59
4x + 4y - 3x - 4y = 72 - 59
x = 13

The answer is 13

Correct choice is A

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3 years ago

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Carman used her knowledge of angle relationships to find the value of x in the diagram.what is the value of x ?

Sergeeva-Olga [200]

Answer:

The Answer is 9

Step-by-step explanation:

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3 years ago

Find the zeros (x-3)(x+5)=0

maxonik [38]

The product is equal zero if one of the factors is equal zero.Therefore:
$(x-3)(x+5)=0\iff x-3=0\ \vee\ x+5=0\\\\\boxed{x=3\ \vee\ x=-5}$

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3 years ago

A deck builder uses 11 bags of concrete mix for every 5 deck footings. If the builder needs to build 12 deck footings, how many

juin [17]

I think it is 220 bags but i am stuipd

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3 years ago

A cylinder has height of 7 inches and a base with a diameter of 9 inches.

bekas [8.4K]

Answer:

527.6 cubic inches

Step-by-step explanation:

The volume of a cylinder is represented by the formula $V = \pi r^{2} h$ , where r represents the radius of the base and h represents the height.

In this question, the diameter is given as 9 inches. Since the radius is half the diameter, the radius will be 4.5 inches.

Substituting in the values and solving, we get:

$V =9 \pi (4.5)^{2}\\V = 9\pi(20.25)\\V = 182.25\pi\\V = 572.6$

The Volume will be 527.6 cubic inches

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3 years ago