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Degger [83]
4 years ago
13

Find the value of x.

Mathematics
1 answer:
Sholpan [36]4 years ago
3 0

Answer:

x = √21.

Step-by-step explanation:

Triangles ADB and BCD are similar.

So their corresponding sides are in the same ratio:

x / 7 = 3 / x

x^2 = 21

x = √21.

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Find the surface area of the figure.
guajiro [1.7K]

<u>Given</u>:

Given that the radius of the cylinder is 6 m.

The height of the cylinder is 7 m.

We need to determine the surface area of the cylinder.

<u>Surface area of the cylinder:</u>

The surface area of the cylinder can be determined using the formula,

SA=2 \pi r(r+h)

where r is the radius and h is the height of the cylinder.

Substituting r = 6 and h = 7 in the above formula, we get;

SA=2 (3.14)(6)(6+7)

Simplifying, we get;

SA=2 (3.14)(6)(13)

Multiplying, we get;

SA=489.84 \ m^2

Thus, the surface area of the cylinder is 489.84 square meters.

Hence, Option a is the correct answer.

4 0
4 years ago
83-(-18) show steps how to solve
Strike441 [17]
83-(-18) = 83+18 = 101
4 0
3 years ago
A store has shirts on display. Seven of the shirts are red. There are 5 more blue shirts than green shirts. There are 2 fewer ye
mixas84 [53]

Answer:

7 red shirts

6 green shirts

11 blue shirts

4 yellow shirts

Step-by-step explanation:

Let y represent the number of green shirts.

So y+5 is the number of blue shirts.

And y-2 is the number of yellow shirts.

And we have 5 red shirts.

Therefore,

7+5+y+y-2+y=28

12-2+3y=28

10+3y=28

3y=28-10

3y=18,divde through by 3

y=6

8 0
3 years ago
Five hundred people attend a charity event, and each buys a raffle ticket. The 500 ticket stubs are put in a drum and thoroughly
AURORKA [14]

Answer:

The sample is a Simple Random sample.

explanation:

A simple random sample is the process where there is equal chance of selecting each member of a population to form a sample. in the example stated in the question there are equal chances of selecting every ticket among the five hundred ticket of the participant so as to form another set of ten tickets that win a prize.

6 0
3 years ago
Show your steps in evaluating each of the following expressions. The steps count 4 points each, the answer is 1 point.
ioda

The steps in evaluating each of the following expressions is shown below.

<h3>What is an expression?</h3>

An expression can be defined as a mathematical equation which shows the relationship existing between two or more numerical quantities or variables.

<h3>How to evaluate the given expressions?</h3>

15 - 35/7 - 2 + 3 - 4

15 - (35/7) - 2 + 3 - 4 (bracket and division)

15 - 5 - 2 + 3 - 4 (regroup)

15 + 3 - 5 - 2 - 4 (subtract and add)

18 - 11 = 7.

<h3>Expression 2.</h3>

10 + 2(9 - 5) - 16/18

10 + (2 × 4) - 8/9 (bracket and division)

10 + 8 - 8/9 (add)

18 - 8/9 (subtract)

162/9 - 8/9 = 17 1/9 or 154/9.

Read more on expressions here: brainly.com/question/12189823

#SPJ1

<u>Complete Question:</u>

Show your steps in evaluating each of the following expressions. The steps count 4 points each, the answer is 1 point.

A. 15 - 35/7 - 2 + 3 - 4

B. 10 + 2(9 - 5) - 16/18

5 0
2 years ago
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