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hram777 [196]
3 years ago
15

When the Glacier Zone Ice Rink opened, Betsy bought 18 ice-skating lessons during their grand-opening sale. She paid 387 in all.

How much did each lesson cost?
​
Mathematics
1 answer:
snow_tiger [21]3 years ago
5 0

Answer:

$21.50

Step-by-step explanation:

Paid $387 in all and bought 18 lessons. Divide 387 by 18 to get 21.5, which is equivalent to $21.50.

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Deepika on her way to home saw some homeless person sleeping in the park in a winter night. she gave them her canvas area of 551
Romashka [77]
Total area of canvas used in the cunstruction of the tent = 551 - 1 = 550 meters square.
Area of a cone = πr(r + sqrt(h^2 + r^2))
22/7 * 7(7 + sqrt(h^2 + 7^2)) = 550
7 + sqrt(h^2 + 49) = 550/22 = 25
sqrt(h^2 + 49) = 25 - 7 = 18
h^2 + 49 = 18^2 = 324
h^2 = 324 - 49 = 275
h = sqrt(275) = 16.58

The volume of the tent is the volume of a cone with base radius of 7 meter and height of 16.58 meter.
Volume of a cone = 1/3 πr^2h
= 1/3 * 22/7 * 7^2 * 16.58 = 851.3 m^3
3 0
3 years ago
True or false: The number 0 (zero) IS an integer
Sergio039 [100]

Answer:

True,  it is Known as a neutral integer Because it is neither negative or positive whole number

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Which is a solution to (x − 2)(x + 10) = 13?
Romashka-Z-Leto [24]
You'll need to expand <span>(x − 2)(x + 10) first,

</span><span>(x − 2)(x + 10) = 13
</span>x^2+8 x-20=13
x^2+8 x+16=49
(x+4)^2=49
x+4= \pm 7
x=3 , x=-11
3 0
3 years ago
Find the common difference of the arithmetic sequence. 6,9.4,12.8,16.2
Blababa [14]

A sequence is said to be arithmetic if every couple of adjacent elements differ by the same number. If this is the case, that constant number is called the common difference.

This sequence is arithmetic, because the difference between every element and the previous one is

  • 9.4 - 6 = 3.4
  • 12.8 - 9.4 = 3.4
  • 16.2 - 12.8 = 3.4

So, the common differnece is 3.4, because every couple of adjacent terms differ by 3.4

8 0
4 years ago
∠ and ∠ are supplementary angles. If ∠ = (2 − 30)° and ∠ = 4, find the measure of the larger angle
Gala2k [10]

Answer:

We get ∠A =40° and ∠B = 140° and ∠B = 140° is measure of larger angle

Step-by-step explanation:

we have  ∠A = (2x − 30)° and ∠B = 4x, and we need to find measure of larger angle. And ∠A and ∠A are supplementary angles.

If the angles are supplementary there sum is equal to 180° i.e ∠A + ∠B = 180°

So,  First we have to find the value of x. and then we can determine larger angle.

We know: ∠A + ∠B = 180

2x-30+4x=180

6x-30=180

6x=180+30

6x=210

x=210/6

x=35

So, value of x is x=35

Now finding ∠A and ∠B

∠A = (2x − 30)°

∠A = (2(35) − 30)°

∠A = (70 − 30)°

∠A =40°

and ∠B = 4x

∠B = 4(35)

∠B = 140°

So, we get ∠A =40° and ∠B = 140° and ∠B = 140° is measure of larger angle

6 0
3 years ago
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