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MAVERICK [17]
3 years ago
10

What is the perimeter of the rectangle? 12 cm 8 cm Perimeter = [?] cm

Mathematics
2 answers:
Anuta_ua [19.1K]3 years ago
7 0

Answer:

40 cm

Step-by-step explanation:

If needed, use a calculator.

12+12=24

8+8=16

24+16=40

Perimeter is 40 cm.

dezoksy [38]3 years ago
6 0

Answer:

The answer is 40 cm

Step-by-step explanation:

Add 12 and 8 twice or (12+8)+(12+8).

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What is the value of this expression?<br> 1/6 ÷ 12
stiks02 [169]

Answer:

0.01388888888

Step-by-step explanation:

4 0
3 years ago
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Find n so that mean of the data set is 140. (120, 145, 130, 80, 95, 100, 340, n)
Varvara68 [4.7K]

Answer:

we know that mean of the data set is

Sum of all terms / total no. of terms

mean = 120+145+130+80+95+100+340+n / 8

140 = 1010+n / 8

140*8 = 1010 + n

1120 = 1010 + n

1120 - 1010 = n

110 = n

therefore the value of n should be 110

hope it's helpful

5 0
3 years ago
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How can you use the multiplication property of equality to rewrite the equation 0.6x+4.8=7.2 so that the numbers in the problem
Mars2501 [29]

We are given the equation:

0.6 x + 4.8 = 7.2

 

In this case, the multiplication property of equality states that whatever is multiplied on one side should also be multiplied on the other side. Now we need to find the number that will make everything a whole number, in this case 5. Multiply everything by 5:

5 * (0.6 x + 4.8 = 7.2)

3 x + 24 = 36

However we can see that we can still further simplify the equation by multiplying everything by 1/3:

(1/3) * (3 x + 24 = 36)

x + 8 = 12

or

x = 4

6 0
3 years ago
Who can help me please
aalyn [17]
1.) 32
2.)42
3.)67
4.)78
5.) 13
6.)67
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8.80
5 0
3 years ago
5. Find the volume of the composite space figure to the nearest whole number. (1 point)
-BARSIC- [3]

Answer:

  (d)  944 mm³

Step-by-step explanation:

The volume of a prism is given by the formula ...

  V = Bh

where B is the area of the base, and h is the distance between bases.

__

<h3>base area</h3>

Here, the base of the prism is a rectangle with a semicircle on top. The circle has a diameter of 9 mm, so a radius of 4.5 mm. The area of the semicircle is ...

  A = 1/2πr² = 1/2π(4.5 mm)² ≈ 31.809 mm²

The area of the rectangle is the product of its length and width.

  A = LW = (9 mm)(6 mm) = 54 mm²

So, the total base area is ...

  31.809 mm² +54 mm² = 85.809 mm²

<h3>prism volume</h3>

The prism volume is this area multiplied by the length of the figure:

  V = Bh = (85.809 mm²)(11 mm) ≈ 944 mm³

The volume of the figure is about 944 mm³.

8 0
2 years ago
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