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Viktor [21]
3 years ago
14

Explain how to calculate this mentally

Mathematics
2 answers:
LekaFEV [45]3 years ago
7 0

Answer:

1. 50℅

2. 25℅

3. 60℅

hope it helps.

djyliett [7]3 years ago
4 0

Answer:

Below.

Step-by-step explanation:

1. Divide 15 by 30 which is  1/2.

Then multiply 1/2 by 100 = 50%.

2.  3/12 = 1/4

1/4 * 100 = 25%

3.  6/10 = 0.6

0.6 * 100 = 60%.

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X + y - 6 = 0<br> x - y - 8 = 0 <br> When you eliminate y , what is the resulting equation?
alisha [4.7K]
When we eliminate y,(by adding here), resulting equation would be:

2x - 14 =0

So, x = 7

You can find the value of y as well, by substituting the value of x, 
7 - y -8 = 0
y = -1

Hope this helps!
5 0
3 years ago
Read 2 more answers
Need help ASAP before 3:30......
Neporo4naja [7]

Answer:

a) Right, Has 1 Right Angle

b) Acute, All Angles Are Less Than 90

c) Obtuse, Has One Angle Larger Than 90

Step-by-step explanation:

4 0
3 years ago
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Simplify this algebraic expression: y-3/3+12
Alenkasestr [34]

Answer:

y-13

Step-by-step explanation:

y-3/3+12

because of order of ops you do 3/3 first

y-1+12

1+12 is 13 so

y-13

8 0
3 years ago
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The volume of the cone is 50π ft³. The height is 6 ft. What is the radius of the​ cone?
laila [671]

Answer:

r = 5 feet

Step-by-step explanation:

see attached for reference

recall that volume of a circular cone is given by

V = (1/3) πr²h, where

V = volume = given as 50π ft³

r = radius (we are asked to find this)

h = height of cone = given as 6 feet

Substituting the above known values into the equation:

V = (1/3) πr²h

50π = (1/3) π (r²)(6)

50π = π (r²)(2)  (divide both sides by 2)

25π = π r²   (divide both sides by π)

25 = r²

r = ±√25

r = ±5   (since radius cannot be negative, we select the positive value

r = 5 feet

3 0
4 years ago
jacob poured 5/6 cup of orange juice and a cup 5/8 of cranberry juice into a pitcher . He drank 1/2 cup of the juice in the pitc
schepotkina [342]
We set up the problem first.

5/6 + 5/8 - 1/2.

We would first find a common denominator. It is 24.

Then we see how many times can 24 go into 6, 8, and 2.

We make them into improper or regular fractions, and we subtract regularly.

20/24 + 15/24 - 12/24 = 23/24.

So your answer would be 23/24.

Hope this helps☻
7 0
3 years ago
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