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olasank [31]
3 years ago
12

Help plz I need help i have no idea what to do

Mathematics
2 answers:
shutvik [7]3 years ago
4 0

Answer:

x = 15 (D)

Step-by-step explanation:

First, we distribute the -1/2:

-1/2 x x = -1/2x

-1/2 x 5 = -2.5

Now we have -1/2x + (-2.5) = -10

Move the variables to one side and the regular numbers on the other (in other words, subtracting both sides by -2.5:

-1/2x = -10 + 2.5

-1/2x = -7.5

x = -7.5/(-1/2)

x = 15   (D)

Tomtit [17]3 years ago
3 0

Answer:

the answer will be 15 number D

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igor_vitrenko [27]

Answer:

11.196%

Step-by-step explanation:

Given:

Buying cost of the investment or the principle amount = $1000

Time, n = 5 years

Selling cost of investment or amount received = $1700

Now,

the formula for compound interest is given as:

\textup{Amount}=\textup{Principle}(1+r)^n

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on substituting the respective values, we get

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or

(1 + r)⁵ = 1.7

or

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or

r = 0.11196

or

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8 0
3 years ago
An escalator lifts people to the second floor of a​ building,34ft above the first floor. The escalator rises at a 30 degree angl
Anit [1.1K]

Answer:

68 ft

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4 0
3 years ago
Helpppppp!!!!!!!!!!!!!
kiruha [24]
<h3>Answer:  Choice B)  468 cm^2</h3>

============================================================

Explanation:

As the diagram shows, we have a triangular face with a base of b = 18 and height of h = 13. The area of this triangular face is:

A = 0.5*b*h

A = 0.5*18*13

A = 117 square cm or cm^2

This represents the area of one face, but there are 4 identical copies of this triangular face assuming this tetrahedron is a regular polyhedron. So we have a total surface area of 4*117 = 468 cm^2 which points us to choice B

This is the amount of paint you'll need to cover the outer surface of the pyramid, or you can think of it as the amount of wrapping paper needed. This assumes there are no gaps or overlaps.

5 0
3 years ago
The shape of a toy cylinder has a radius of 5cm and height of 8cm on top a hemisphere of radius 5cm , calculate the volume of th
steposvetlana [31]

Answer:

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Step-by-step explanation:

The volume of the cylinder is given by the formula ...

  V =  πr^2h

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The volume of a hemisphere is given by the formula ...

  V = (2/3)πr^3

Filling in the given radius, we find the hemisphere volume to be ...

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The total volume of the toy is presumed to be the sum of these volumes, so is ...

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5 0
4 years ago
Part 1: Assume that a bacteria population triples every hour. Which of the following three tables of data, with
svetlana [45]

Answer:

Table C

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4 0
3 years ago
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