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notka56 [123]
3 years ago
13

Identify the surface area of the composite figure to the nearest tenth.

Mathematics
1 answer:
BlackZzzverrR [31]3 years ago
6 0

Answer:

A: 1779.2 cm^2

Step-by-step explanation:

Oh boy. Okay so the surface area of the cube.

14x14 is 116 cm.

Multiply 116 by 6 (because there are 6 square sides) which gives you 696 cm

For the can shape: (Cylinder lol)

The radius of the circular sides is 6.

Area of a circle is pi(r)^2

pi(6)^6

=18.8^2

=353.44 cm

multiply by 2 because there are 2 sides

353.44 x 2= 706.88 cm

add that to 696

=1402.88 cm

FINALLY: the last part. We need the circumference and the height of the cylinder.

We know that the height is 10 cm.

Use the circumference equation and we see that is is 37.69 cm

multiply by 10

376.9 cm

Add to the rest

1779.2 cm^2

Have a nice day. Im gonna go rest my brain L /\/\ /\ O

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Given the graph, what is in initial value of the function?
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Answer:

6

Step-by-step explanation:

I have a big thick lookin brain

Im not completely sure so please dont get upset with me. : )

6 0
3 years ago
The lifetime of a certain type of battery has a mean value 20 hours and standard deviation 3 hours. A bulk package of these batt
vodka [1.7K]

Answer:

The distribution of average life time is approximately normallyl distributed with mean 20 hours and standard deviation of 0.4743 hours

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

In this problem

\mu = 20, \sigma = 3, n = 40, s = \frac{3}{\sqrt{40}} = 0.4743

The distribution of average life time is approximately normallyl distributed with mean 20 hours and standard deviation of 0.4743 hours

8 0
4 years ago
How many solutions does the system have?
marishachu [46]

Answer:

{x,y} = {-2,2}

Step-by-step explanation:

Solve equation [2] for the variable  y  

 

  7y = 7x + 28

  y = x + 4

Plug this in for variable  y  in equation [1]

-8x + 4•(x +4) = 24

-4x = 8

Solve equation [1] for the variable  x  

4x = - 8  

x = - 2

By now we know this much :

   x = -2

   y = x+4

Use the  x  value to solve for  y  

   y = (-2)+4 = 2

Solution :

{x,y} = {-2,2}

and this intersects at only one point so your answer is A

3 0
3 years ago
List the angles of triangle PQR from smallest to largest
Norma-Jean [14]
So in order for us to know which angle is the smallest and which one is the largest, take note that the largest angle is the opposite of the longest side, and the smallest angle is the opposite of the shortest side. So base on the given figure above, the smallest angle would be angle p, then next is angle q and the largest, therefore would be angle r. Hope this answer helps. So it is p,q,r. 
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4 years ago
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Portia has 9 more pennies than quarters. Altogether she has $2.95 in pennies and quarters. How many of each coin does Portia hav
Gala2k [10]

Answer:

the answer is 11 quarters and 20 pennies


Step-by-step explanation: because it said 9 more pennies than quarters so 11 x .25 = $1.75 + $0.20 = $2.95

PLZ MARK BRAINLIEST

5 0
3 years ago
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