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sergey [27]
3 years ago
6

I need help please and thank you

Mathematics
1 answer:
Sindrei [870]3 years ago
8 0

Answer:

242

Step-by-step explanation:

<h2><u>the formula for calculating surface area of a rectangular prism is :</u></h2>

2 ( wl + hl + hw)

where:

w is the width

h is the height

l is the length

= 2* (10*7 + 3*7 + 3*10 )

=242

<h3><u>the surface area is 242 </u></h3>
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Answer:

Step-by-step explanation:

Set this up as a proportion, with inches on the top and feet on the bottom for our scale.  We will find the actual length first, then we'll find the width.

\frac{in}{ft}:\frac{1}{5}=\frac{2.5}{x}

Cross multiply to get that the actual length is 5(2.5) = 12.5 feet.  Now for the width:

\frac{in}{ft}:\frac{1}{5}=\frac{3}{x}

Cross multiply to get that the actual width is 5(3) = 15 feet.

If you want the area of the room, multiply the length times the width to get

A = 15(12.5)

A = 187.5 feet squared

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3 years ago
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Step-by-step explanation:

If you want the "root" of the equation...

First get y by itself on one side. You should get y = - x - 8.

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So the solution or "root" of the equation is at the point (-8,0)

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3 years ago
Read 2 more answers
Match the equations with their solutions over the interval [0, 2π].
nignag [31]

I solved this using a scientific calculator and in radians mode since the given x's is between 0 to 2π. After substitution, the correct pairs are:

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cos(5π/6)tan(5π/6) – ½ = 0

 

sec(x)cot(x) + 2 = 0 → 7π/6 and 11π/6

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sec(11π/6)cot(11π/6) + 2 = 0

 

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sin(3π/4)cot(3π/4) + 1/sqrt2 = 0

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csc(π/3)tan(π/3) – 2 = 0

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5 0
4 years ago
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Lady bird [3.3K]

Answer:

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Step-by-step explanation:

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Given that AB = 6, then the radius of the sphere = 6

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Answer:

D

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D has a repeating x value. Functions are only supposed to have one input for everyone output. ( no repeating x values)

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