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3 years ago

13

A large rectangular movie screen in an IMAX theater has an area of 7,875 square feet. Find the dimensions of the screen if it is

30 feet longer than it is wide.

1 answer:

pickupchik [31]3 years ago

5 0

Answer:

Width=75

length=105

Step-by-step explanation:

Width=x

length=30+x

= 7875=x*30+x

x^2+30x-7875=0

x^2+105x-75x-7875=0

x(x+105)-75(x+105)=0

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brilliants [131]

V= 4/3 • 3.14 • radius to the 3rd power.

If you don't have the radius, you can find it by dividing the diameter by 2.

Hope this helps!

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4 years ago

If k(x) = 5x - 6, which<br> expression is equivalent to (k + k)(4)?

kogti [31]

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3 years ago

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3x + 8<br>× x + 2<br>_______

Vladimir79 [104]

Step-by-step explanation:

<h2>(3x + 8) (x + 2)</h2>

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3 years ago

What is the volume of a sphere with a diameter of 4 meters? (Use 3.14 for π.)

mixer [17]

Answer:

volume of the sphere = $33.493m^3$

Step-by-step explanation:

Given:

$Diameter= 4 m$ , $Radius = 4/2 =2 m$

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= $\frac{4}{3} *\pi* 2*2*2$ : $\pi =3.14$

= $\frac{4}{3} *3.14*2*2*2$

= $1.33*3.14*2*2*2$

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The volume of the sphere with the radius of 2 m is $33.493m^3$

6 0

3 years ago

Given a possible triangle abc with a=16, b=25 a=22 find a possible value for b round to the nearest tenth.

Stells [14]

We can use the Sine Law:
a / sin A = b / sin B
16 / sin 22° = 25 / sin B
16 / 0.3746 = 25 / sin B
sin B = 25 · 0.3746 / 16
sin B = 0.5853
∠B = sin^(-1) 0.5853
∠B = 35.83° ≈ 35.8°
Answer: b. 35.8°

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4 years ago

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