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yulyashka [42]
3 years ago
13

I need help I need this plz

Mathematics
1 answer:
weqwewe [10]3 years ago
7 0

Answer:

The correct answer is 5 2/15

Step-by-step explanation:

Since the numerators on both numbers are opposite, you have to go through an equation to make them equal.

4/5 and 1/3 don't have the same numerator. Because of this, you have to find the least common multiple.

5, 10, <u>15</u>

3, 6, 9, 12, <u>15</u>

Now that we found said number, we have to multiply the denominators so they match as well. How we do that is by multiplying the number by how many times the numerator has been multiplied to.

Since 5 had to be multiplied by 3 to get to 15, you would multiply 4 by three, giving you 12/15. Same goes with the other fraction, 3 times 5 got us 15, so we would multiply 1 by 5, giving us 5/15.

Now it's as simple as adding. 12/15 + 5/15 = 17/15, which will make 1 2/15. Add that to the whole numbers you have and you will get 5 2/15. (Note: You cannot simplify 2/15, so you leave it as is)

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What is the radius of a cylinder with a volume of 3,165.12 cubic centimeters and a height of 7 centimeters?
leonid [27]

Answer:

Radius = 12 cm

Step-by-step explanation:

Given:

Volume of the cylinder is, V=3165.12 cm³

Height of the cylinder, h= 7 cm

Let the radius be r

Using the formula for volume of cylinder,

V=\pi r^2h

Plug in 3165.12 for V, 7 for h and solve for r.

3165.12=\pi r^2(7)\\3165.12=\frac{22}{7}\times 7\times r^2\\3165.12=22r^2\\r^2=\frac{3165.12}{22}\\r^2=143.869\\r=\sqrt{143.869}=11.99\approx=12\textrm{ cm}

Therefore, the radius of the cylinder is nearly 12 cm.

7 0
3 years ago
write and simplify an expression to find the amount Pani pays if a $3 discount is applied to her total?
ValentinkaMS [17]
<span>12X + 19Y - 3  is the answer to your question that you have asked.</span>
5 0
3 years ago
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masya89 [10]
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7 0
3 years ago
Find mZCAB.<br> 110°<br> А A<br> 2 + 6x<br> 12x<br> B
ryzh [129]

Answer:

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18x=110-2

18x=108

x=108/18

x=6

Therefore the value of x is 6

4 0
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78 students are separated into groups of 8 for a field trip.how many groups are there.the remaining students form a smaller grou
IceJOKER [234]

Answer:

9 groups with 6 extra students

Step-by-step explanation:

78/8= 9 .75

we take the whole number =9

8*9=72

78-72=6

6 extra students

3 0
3 years ago
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