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ololo11 [35]
2 years ago
13

Evaluate if a = 28 and b = -3. a over 4 + b =

Mathematics
1 answer:
sweet-ann [11.9K]2 years ago
4 0

Answer:

28

Step-by-step explanation:

a / (4 + b)

(28) / (4 + -3)

(28) / (4 - 3)

(28) / (1)

28

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Hevesh wants to make 2 lines of dominoes that are both 21 inches long. Each line has dominoes spaced 1 and 1/2 inches apart. How
aliya0001 [1]

Answer: 30 dominoes in total.

Step-by-step explanation:

Each line is 21 inches long.

the space between dominoes is 1 + 1/2 inches.

(assuming that the distance includes the domino itself) Now, we need at least two dominoes to see this distance,

The we have N + 1 dominoes per line, and the distance is:

N*(1 + 1/2)inches = 21 inches

If we find N, we can find the number of domineoes in each line:

N = 21/(1 + 1/2) = 14

This means that we have 14  + 1 = 15 dominoes in each line, and we have two lines, so we have 30 dominoes in total.

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3 years ago
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mart [117]
-4.9(-2)=9.8
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8 0
3 years ago
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How do I find the lateral and total surface area of the prism.
Roman55 [17]
<h3>Explanation:</h3>

<em>Lateral Area</em>

The lateral area is the area of the sides of the prism. If the faces are perpendicular to the bases, then each face is a rectangle. The area of each rectangle is the product of its length and width, generally the product of the height of the prism and the length of one edge of the base.

The total lateral area will then be the product of the height of the prism and the perimeter of the base.

<em>Total Area</em>

The total area is the sum of the lateral area (computed as above) and the area of the two bases of the prism. The formula for that area depends on the shape of the prism. (You have already seen formulas for the areas of triangles, rectangles, and other plane shapes. If not, they are readily available in your text or using a web search.)

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Answer:

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Step-by-step explanation:

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