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Lorico [155]
2 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]2 years ago
8 0

Answer:

33

Step-by-step explanation:

7x3=21

4x3=12

21+12=33

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2. Use the following picture for this question:
Art [367]

Answer:

a.  24\sqrt{3}  and 41.6

b.  52.1

Step-by-step explanation:

a.

Considering the left side triangle the blue dotted side is the side "opposite" to the angle given and the side 24 is the side that is "adjacent" to the angle given. The trigonometric ratio tan relates opposite to adjacent. Also, let the blue dotted side be y.

<u>Note:</u> the exact value of tan 60 is \sqrt{3}

Thus, we can write Tan(60)=\frac{y}{24}\\y=24*Tan(60)\\y=24*\sqrt{3} \\y=24\sqrt{3}

Approximate value (rounded to nearest tenth):  24\sqrt{3} =41.6

b.

Considering the triangle to the right, the side "opposite" to the angle given (53 degrees) is 41.6 (just found in part (a)) and the side "hypotenuse" (side opposite to 90 degree angle) is x. The trigonometric ratio sine relates opposite and hypotenuse.

Thus we can write and solve:

Sin(53)=\frac{41.6}{x}\\x=\frac{41.6}{Sin(53)}=52.1

4 0
3 years ago
Determine the x- and y-
rjkz [21]
Answer and working out attached, hope this helps

3 0
2 years ago
Math question, please help me!!
riadik2000 [5.3K]

Answer:

Sorry I am a little confused about the answer

3 0
2 years ago
The parabola y=x^2 is reflected across the x axis and then scaled vertically by a factor of 1/8.
tekilochka [14]

ANSWER

The new equation is:

y =  -  \frac{1}{8}  {x}^{2}

EXPLANATION

The given parabola has equation,

y =  {x}^{2}

This is the parent function.

When we reflect this parabola in the x-axis and then scaled vertically by a factor of 1/8.

The new equation becomes:

y =  -  \frac{1}{8}  {x}^{2}

3 0
2 years ago
1.12 divided by 8.2 equals
AleksandrR [38]
It equals 0.1365853659
you may round as needed
7 0
3 years ago
Read 2 more answers
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