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Flura [38]
2 years ago
15

Estimate 3/4% of 168​

Mathematics
1 answer:
Anestetic [448]2 years ago
8 0

Answer:

120

Step-by-step explanation:

we can round 168 down to 160 because it is easily divisible by 4.

160/4 = 40 (which is about 1/4 of 168)

multiply by 3 to get 3/4 (1/4 x 3 = 3/4)

40 x 3

=120

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The difference of a number x and 5.
DiKsa [7]

Answer:

Below

Step-by-step explanation:

Difference= ‘-’

=

x - 5

3 0
3 years ago
For your friend's birthday, you have 3 presents to wrap. Find the combined surface area of these 3 gifts so you know how much wr
omeli [17]

The answer is: 5,614 square inches.

The explanation is shown below:

1. The gift on the bottom is a rectangular prism. To calculate its surface area, you must apply the following formula:

 SA=2[(l)(w)+(l)(h)+(h)(w)]

Where l is the length (20 inches), w is the width (42 inches) and h is the heigth (16 inches).

2. Substitute values:

SA1=2[(20in)(42in)+(20in)(16in)+(16in)(42in)]=3,664in^{2

3. The surface area of the other gifts can be calculated with the formula for calculate the surface area of a cube:

SA=6s^{2}

Where s is the side.

4. The surface area of the bigger cube is:

SA2=6(15in^{2})=1,350in^{2}

5. The surface area of the smaller cube is:

SA3=6(10in^{2})=600in^{2}

6. The total surface area (the combined surface area of the three gifts) is:

SAt=SA1+SA2+SA3\\SAt=3,664in^{2}+1,350in^{2}+600in^{2}\\SAt=5,614in^{2}

7 0
3 years ago
The 20 girls in the class represented 55% of the students in the class. How many students are in the class?
inna [77]

Answer:

There are 31 students in the class.

Step-by-step explanation:

4 0
3 years ago
Please help me quickly
bekas [8.4K]

Answer:

D

when you look at it it is upside down so d is the right answer

4 0
2 years ago
Can someone write this in standard form -7-3x=9x(x+2)
lbvjy [14]
-7 - 3x = 9x(x + 2)

Standard Form:
-9x^2 - 21x - 7 = 0
8 0
3 years ago
Read 2 more answers
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