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Leviafan [203]
3 years ago
11

Analyze this student's work. What did the student do correctly? What did he do incorrectly?

Mathematics
1 answer:
saw5 [17]3 years ago
8 0
I don’t think he did distributive property
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Is 90.31 greater than 90.302
mash [69]

Answer:

90.31 is greater than 90.302

Step-by-step explanation:

6 0
3 years ago
the perimeter of the floor of a room is 18 metre and its height is 3 cm what is the area of 4 walls of the room​
Lina20 [59]

Note: The height of the room must be 3 m instead of 3 cm because 3 cm is too small and it cannot be the height of a room.

Given:

Perimeter of the floor of a room = 18 metre

Height of the room = 3 metre

To find:

The area of 4 walls of the room.

Solution:

We know that, the area of 4 walls of the room is the curved surface area of the cuboid room.

The curved surface area of the cuboid is

C.S.A.=2h(l+b)

Where, h is height, l is length and b is breadth.

Perimeter of the rectangular base is 2(l+b). So,

C.S.A.=\text{Perimeter of the base} \times h

Putting the given values, we get

C.S.A.=18\times 3

C.S.A.=54

Therefore, the area of 4 walls of the room is 54 sq. metres.

7 0
3 years ago
Sixty-three is 70% of what number?
Margaret [11]
<u>  70</u> =<u>63</u><u>
</u>100    ?
cross multiply 63 and 100= 6300 then divide by 70= 90
3 0
3 years ago
All you need is on the photo
mariarad [96]

Answer:

4^{-3}

Step-by-step explanation:

We\ are\ given\ that,\\4^4*4^{-8}*4\\We\ know\ that,\ for\ any\ real\ number\ n, n^a*n^b=n^{(a+b)}\\Hence,\\First,\ lets\ write\ all\ the\ terms\ in\ an\ exponential\ form.\\4^4*4^{-8}*4^1\\=4^{(4+(-8)+1)}\\=4^{(5-8)}\\=4^{-3}

5 0
3 years ago
3 1/9+2 1/4=<br> what is the answer
34kurt
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Step-by-step explanation:

3 0
2 years ago
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