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Lorico [155]
3 years ago
13

In a movie theater, there are children and adults in the ratio 4:7. If there are 21 adults, how many people total are there in t

he theater?
Mathematics
1 answer:
lozanna [386]3 years ago
8 0

Answer:

33

Step-by-step explanation:

7x3=21

4x3=12

21+12=33

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Pls help this is probably super easy but not for me
san4es73 [151]

Answer:

A.    29 feet

Step-by-step explanation:

Use cos to find the hypotenuse

cos  = adj/hp

0.64 = 20/hyp

hyp = 20/0.64

hyp = 31.25

---------------------------

Use Pythagorean Theorem to find the height of tree above eyes

a² + b² = c²

a² + 20² = 31.25²

a² = 31.25² - 20²

a² = 576.5625

a = 24  (to the nearest foot)

-------------------------------

Finally add in the eye height

h = 24 + 5

h = 29 feet

3 0
2 years ago
Read 2 more answers
Choose a strategy or a combination of strategies to solve the problem. Alicia forwards an e-mail to 2 of her friends. After 10 m
serious [3.7K]
62 people after 40 minutes.
Multiply the previous number by 2 and add that to the total of recipients
0 minutes = 2. 10 minutes (2+4) =6. 20 minutes (2+4+8) = 14. 30 minutes (2+4+8+16)= 30. 40 Minutes (2+4+8+16+32) = 62
8 0
3 years ago
A) 5<br> B) 6 <br> C) 3 <br> D) 1
Trava [24]

Answer:

D.1

Step-by-step explanation:

13=12+?           subtract 12 by both sides

1=?

8 0
2 years ago
Read 2 more answers
In a survey of 2,800 people who owned a certain type of car, 840 said they would buy that type of car again. What percent of the
cluponka [151]

Answer:

30% of people surveyed were satisfied with the car.

Step-by-step explanation:

We are given:

Total participants in survey= 2800

People satisfied with car = 840

We need to find percent of the people surveyed were satisfied with the car.

The formula used is: \frac{People \ satisfied \ with \ car}{Total \ participants \ in \ survey} \times 100

=\frac{840}{2800}\times 100\\=30\%

So, 30% of people surveyed were satisfied with the car.

6 0
2 years ago
The area of a circle is 826 centimeters. Find the diameter.
WITCHER [35]
The formula for area of a circle  = PI x r^2

since we know area, we can put that in the formula and solve for r ( which is the radius) diameter is radius x 2

826 = 3.14 x r^2

divide both sides by 3.14:

r^2 = 826 / 3.14

r^2 = 263.06

r = square root (263.06)
r = 16.22 cm

diameter = 16.22 * 2 = 32.44 cm
 

4 0
3 years ago
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