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umka2103 [35]
4 years ago
13

Nine children join hands to form a Circle how many hands are joined

Mathematics
1 answer:
Wewaii [24]4 years ago
4 0
18 hands are connected. 9children multiplied by 2hands equals 18hands connected.
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How do you work this out
oksian1 [2.3K]

Answer:

Below.

Step-by-step explanation:

To find the number of students in each grade you multiply the marks by the frequency density. The number of students is given by the area under the  rectangles.

So to find the number of students with grade U (< 160)  it is:

120 * 0.2 + 40*0.5

= 24 + 20

= 44.

The number for Grade E

= (200 - 160) * 0.5

= 40 * 0.5

= 20.

The others can be found in the same way.

6 0
4 years ago
The sum of two number is 19, and their difference is 1. Let x be the larger number and y be the smaller number. Write the first
xz_007 [3.2K]
X= 10 y= 9 the difference between the two numbers is one and they equal 19
8 0
4 years ago
Convert 2 1/2 an improper fraction
soldier1979 [14.2K]

Answer:

2 1/2 = 5/2

Step-by-step explanation:

There is a trick you can do when converting mixed numbers into improper fractions

Multiply the whole number and denominator, in this case you'll do 2 * 2 which equals 4

Finally, add the numberator to your product. For this you'll do 4 + 1 which equals 5

When done, keep the denominator and keep your sum as the numerator. 5/2!

7 0
3 years ago
3(-4x + 8)= rewrite as expression
Lerok [7]

Answer:

-12x+24

Step-by-step explanation:

3(-4x+8)

multiply 3 by each part so 3(-4x) + 3(8)

-12x+24

6 0
3 years ago
Read 2 more answers
HELP PLS !! <br> What is the area of this trapezoid?<br> Enter your answer in the box.
tamaranim1 [39]

Answer:

A =315 cm^2

Step-by-step explanation:

The area of a trapezoid is found by

A = 1/2 (b1+b2) *h

where b1 and b2 are the lengths of the bases and h is the height

A = 1/2 ( 13+29) *15

A  = 1/2 (42)* 15

A =315 cm^2

5 0
4 years ago
Read 2 more answers
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