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3 years ago

A cube has a surface area of 24ft. What is the length of one edge of the cube

Mathematics

2 answers:

Dafna1 [17]3 years ago

7 0

The length of one edge would be 2

lara31 [8.8K]3 years ago

5 0

The length of one edge would be 2 fr

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What’s the answer to this problem

horrorfan [7]

Radius = 7

Circumference = 43.9823

Area = 153.938

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3 years ago

I conducted a poll and asked 1012 students how many books they read last year. The data indicates x = 12.1 books and s = 16.6 bo

Paul [167]

Answer:

(11.242 ; 12.958)

Step-by-step explanation:

The confidence interval is obtained using the relation :

C. I = xbar ± Zcritical * s/√n

Given that ::

xbar = 12.1 ;

Standard deviation, s = 16.6

n = 1012

C. I = 12.1 ± 1.645 * (16.6/√1012)

C.I = 12.1 ± 0.8583881

C. I = 11.242 ; 12.958

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3 years ago

Find the area. The figure is not drawn to scale

poizon [28]

Answer:

96 square inches.

Step-by-step explanation:

From given picture we see that

BC=8 in

AD=10 in

Given that

AD=AB

Then AB=10 in

Apply Pythagorean theorem in triangle ABC to find AC

$(hypotenuse)^2=(base)^2+(perpendicular)^2$

$(AB)^2=(BC)^2+(AC)^2$

$(10)^2=(8)^2+(AC)^2$

$100=64+(AC)^2$

$100-64=(AC)^2$

$36=(AC)^2$

take square root

$6=AC$

Then area of triangle ABC $=\frac{1}{2}\left(base\right)\left(altitude\right)$

$=\frac{1}{2}\left(8\right)\left(6\right)=24$

There are total 4 congruent triangles.

Then total area of the given figure = 4(24)=96 square inches.

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3 years ago

If it takes 4 people 60 minutes to paint 8 walls, how long will it take 5 people to paint 4 walls?

m_a_m_a [10]

4 people paint 8 walls in 60 minutes

1 person paints 8 walls in 240 minutes

1 person paints 1 wall in 30 minutes

5 people paint 1 wall in 6 minutes

5 people paint 4 walls in <em>24 minutes</em>

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3 years ago

The cost of a student ticket is $7 write a equation that correctly relates the total cost

daser333 [38]

X=$7 | 1 Ticket= x | 1 Ticket = $7

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4 years ago