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statuscvo [17]
3 years ago
12

Find the surface area of a cube with side length 6 1/2

Mathematics
2 answers:
DaniilM [7]3 years ago
5 0
To find the surface are youd have to multiply 6 1/2 by 6, because a cube has 6 total sides. so the answer would be 6•6.5 which equals 39
Scrat [10]3 years ago
5 0
The formula of the surface area of the cube is 6s^2. “S” stands for side length, and you square it to get the area of one side of the cube. Multiply that by 6 (6 identical faces on a cube) to get the answer. So 6 x (6.5 x 6.5) equals 253.5 or 253 1/2. Don’t forget units if the problem has included them.
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Maria's height while jumping on a a trampoline can be modeled by the equation h=-16t^2+18t+5. Where t=time in seconds and h=heig
Vadim26 [7]

Answer:

10.06 ft

Step-by-step explanation:

Maria's maximum height will occur when her velocity reaches zero (0). This means that she has stopped ascending and is about to begin descent.

The equation for the height reached by Maria on the trampoline is given as:

h=-16t^2+18t+5

To find her maximum height, we first have to find the time it will take her to get to that height and corresponding velocity (zero).

Her velocity can be found by differentiating her height i.e. dh/dt:

v = \frac{dh}{dt} = -32t + 18

Therefore, when v = 0:

0 = -32t+ 18\\\\=> 32t= 18\\\\t = 18 / 32 = 0.5625 secs

It takes her 0.5625 seconds to get to her maximum height.

Therefore, her height at that time (0.5625 seconds) is:

h=-16(0.5625)^2+18(0.5625)+5\\\\h = -16 * (0.3164) + 10.125+5\\\\h = -5.0624 + 15.125\\\\h = 10.06 ft

Therefore, her maximum height is 10.06 ft.

3 0
3 years ago
Frieda has 12 red apples and 15 green apples. She is going to share the apples equally among 8 people and keep any extra apples
icang [17]

Answer:

3

Step-by-step explanation:

She has 12+15=27 apples

We divide 27 by 8 people

27:8=3

-24

___

(3)

We have reminder 3 so, she have 3 apples for herself.

5 0
3 years ago
Help Please!! I am not sure what to do?
Iteru [2.4K]

Answer:

10 < \sqrt{111} < 11

Step-by-step explanation:

The square root of 111 is approximately 10.536.

A number smaller than this is 10.

A number larger than this is 11.

5 0
3 years ago
Use the front end addition strategy to add
ruslelena [56]
I cant see anything there needs to be more to the question

4 0
3 years ago
Please help me. I suck at math
serg [7]

Answer:

Answer is ...Obtuse

Step-by-step explanation:

\frac{m

\frac{5x + 4}{2}  =  \frac{3}{2} x + 21

\frac{5x + 4}{2}  =  \frac{3x + 42}{2}

5x + 4 = 3x + 42

5x -  3x = 42 - 4

2x = 38

x = 19

substituting \: x = 19  \: \:in \:  \:  \:  \:  \:  \:  \: \\ m

We get,

m<ABC =

(5 \times 19) + 4 = 99

Hence <ABC is obtuse

4 0
3 years ago
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