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3 years ago

Tell whether the angles are adjacent or vertical. Then find the value of x.

Mathematics

1 answer:

nata0808 [166]3 years ago

3 0

Answer:

Upload a picture

Step-by-step explanation:

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Something dive (-9) = 6

Nataly_w [17]

Answer:

-3

Step-by-step explanation:

idk im just guessing

5 0

3 years ago

To select a sample of five children from a class of 30, a researcher puts each child’s name on a slip of paper, then shuffles th

Ainat [17]

Answer:

We conclude that a researcher used simple random sample.

Step-by-step explanation:

We know that select a sample of five children from a class of 30, a researcher puts each child’s name on a slip of paper, then shuffles the papers in a hat and randomly picks five names.

We conclude that a researcher used simple random sample.

Because every children has an equal chance of being included in the sample.

7 0

3 years ago

(_12)+7 what is solution

Mama L [17]

Answer:

Step-by-step explanation:

-12 + 7= - 5

6 0

3 years ago

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One week you tell 3 of your friends a secret. The next week, each of them tells 3 people the secret and the next week each of th

Ulleksa [173]

81 people will know the secret by week 4

4 0

3 years ago

Read 2 more answers

Find

Sedaia [141]

Answer:

The amount of steel used = 94.38 $m^{2}$

Step-by-step explanation:

Height of the tank = 4.5 m.

Diameter of the tank = 4.2 m.

But,

radius = $\frac{diameter}{2}$

= $\frac{4.2}{2}$

radius = 2.1 m

Total surface area of a cylinder = 2 $\pi$ rh + 2 $\pi$ $r^{2}$

= 2 $\pi$ r(r + h)

= 2 x $\frac{22}{7}$ x 2.1 (2.1 + 4.5)

= 44 x 0.3 (6.6)

= 87.12

Total surface area of a cylinder = 87.12 $m^{2}$

Since $\frac{1}{12}$ of the steel was wasted, then;

$\frac{1}{12}$ x 87.12 = 7.26 $m^{2}$

Actual area of steel sheet used = 87.12 + 7.26

= 94.38 $m^{2}$

Thus, 94.38 $m^{2}$ of steel was used in making the tank.

4 0

3 years ago