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Fiesta28 [93]
3 years ago
10

a scale drawing of a movie screen is 21 inches long and 9 inches tall. The actual screen is 30 ft tall. Find the perimeter of th

e actual movie screen. Just put in the answer that's it​
Mathematics
1 answer:
sergiy2304 [10]3 years ago
8 0

Answer: 200

Step-by-step explanation:

you add 70+70+30+30

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A rope is swinging in such a way that the length of the arc is decreasing geometrically. If the first arc is 18 feet long and th
NemiM [27]

Answer: The length of the second arc is 12 feet.

Step-by-step explanation:

Since we know that

A rope is swinging in such a way that the length of the arc is decreasing geometrically,

Length of first arc = 18 feet

Length of third arc = 8 feet

Let the length of second arc be x

As we know that

\frac{a_2}{a_1}=\frac{a_3}{a_2}\\\\\frac{x}{18}=\frac{8}{x}\\\\x^2=18\times 8\\\\x^2=144\\\\x=\sqrt{144}\\\\x=12

Hence, the length of the second arc is 12 feet.

4 0
2 years ago
Read 2 more answers
Increase 80 in the ratio of 3:2​
Karolina [17]

Answer:

Ratios describe proportions. We can always multiply across ratios, or divide across them (as long as we do it to all of them). For example, the ratio 3 : 2 is the same as 6 : 4 and 300 : 200. Accuracy Tip.

Step-by-step explanation:

6 0
2 years ago
What is the multiple zero and multiplicity of f(x)=x^3-8x^2+16x?
lions [1.4K]
Multiplicity is how many times a root repeats
factor
x(x²-8x+16)
what times wat =16 and adds to -8
-4 and -4
x(x-4)(x-4)
x(x-4)²
set to zero
x=0

x-4=0
x=4

roots are 0 ad 4

4 repeats 2 times, so has a multiplicty of 2


so
roots are 0, and 4 multiplicity 2

4 0
3 years ago
Read 2 more answers
I need help with a math question that is 0.1x = 5/y
BabaBlast [244]
Unfortunately you have not included the directions.  Are you supposed to solve for x?  or for y?

Suppose the directions say, "Solve for x."  Then, clear out the decimal fraction by mult. both sides of the given equation by 10.  This will give you the solution, that is, a formula for x in terms of y.


3 0
3 years ago
X=-7y+5<br> 5x=4y=-6<br> solve by substitution
lyudmila [28]
5x (-7)y=4
y=-4/35
5x=4
x=4/5
(x, y) = (4/5, 4/35)
4 0
2 years ago
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