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mart [117]
3 years ago
13

I am four times as old as my daughter. In 20 years time I shall be twice as old as her. How old are we now?

Mathematics
1 answer:
SashulF [63]3 years ago
6 0

Answer:

If x is my daughter's age now, my age now is 4x. So now my daughter is 10 years old, and I'm 40 years old, and in 20 years she'll be 30 and I'll be 60, twice as hers.

Step-by-step explanation:

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A cone-shaped paper drinking cup is to be made to hold 33 cm3 of water. find the height and radius of the cup that will use the
alekssr [168]
The height and radius that will give us the smallest amount of paper, should have should have the perfect dimension, in that the diameter should be equal to the height. thus let the diameter be x, the height will be x and the radius will be x/2
thus the volume of the cone will be:
V=1/3πr^2h
=1/3*π*(x/2)^2*x
=0.262x^3
hence the value of x will be:
33=0.262x^3
x^3=125.95
x=(125.95)^(1/3)
x=5.0126=5.01 cm
thus the diameter=height=5.01cm
6 0
3 years ago
Binh has to write an 8-page report. If he has written 3/4 of his report so far, how many pages has he written?
Eva8 [605]

Answer:

6 pages

Step-by-step explanation:

3/4 = 8 = 2 = 1/2 = 3/4 / 8 = 6

This is confusing to understand but that's how I solved it.

4 0
3 years ago
Nicholas can make 6 cupcakes (the y value) with one cup of
masya89 [10]
36 cupcakes if one cup of flour is 6 cupcakes you multiply the amount of flour by 6
4 0
3 years ago
<img src="https://tex.z-dn.net/?f=%5Cfrac%7Br%7D%7B2%7D%2B%5Cfrac%7Bs%7D%7Br%7D%20-%5Cfrac%7Br%7D%7B4%7D%2B%5Cfrac%7B1%7D%7B5%7D
zloy xaker [14]

Answer:

-1/20

Step-by-step explanation:

r/2 + s/r - r/4 + 1/5 =

= -1/2 + 0/(-1) - (-1)/4 + 1/5

= -1/2 + 1/4 + 1/5

= -10/20 + 5/20 + 4/20

= -5/20 + 4/20

= -1/20

3 0
3 years ago
Can anyone please help me
astraxan [27]

Answer:

its 72

Step-by-step explanation:

hope this helps

6 0
3 years ago
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