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marshall27 [118]
2 years ago
9

Factorise y^2-10y+16

Mathematics
1 answer:
KatRina [158]2 years ago
8 0
I hope this helps you

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A closed can, in a shape of a circular, is to contain 500cm^3 of liquid when full. The cylinder, radius r cm and height h cm, is
Gemiola [76]
To express the height as a function of the volume and the radius, we are going to use the volume formula for a cylinder: V= \pi r^2h
where
V is the volume 
r is the radius 
h is the height 

We know for our problem that the cylindrical can is to contain 500cm^3 when full, so the volume of our cylinder is 500cm^3. In other words: V=500cm^3. We also know that the radius is r cm and height is h cm, so r=rcm and h=hcm. Lets replace the values in our formula:
V= \pi r^2h
500cm^3= \pi (rcm^2)(hcm)
500cm^3=h \pi r^2cm^3
h= \frac{500cm^3}{ \pi r^2cm^3}
h= \frac{500}{ \pi r^2}

Next, we are going to use the formula for the area of a cylinder: A=2 \pi rh+2 \pi r^2
where
A is the area 
r is the radius 
h is the height

We know from our previous calculation that h= \frac{500}{ \pi r^2}, so lets replace that value in our area formula:
A=2 \pi rh+2 \pi r^2
A=2 \pi r(\frac{500}{ \pi r^2})+2 \pi r^2
A= \frac{1000}{r} +2 \pi r^2
By the commutative property of addition, we can conclude that:
A=2 \pi r^2+\frac{1000}{r}
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In a group of EXPLORE students, 38 enjoy video games, 12 enjoy going to the movies and 24 enjoy solving mathematical problems. O
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2 years ago
Help me solve this problem please
aleksklad [387]

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(2,5) is right answer ok

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2.67

Step-by-step explanation:

They are asking for the total poundage of power pasta after some is removed. This means we subtract the amount removed from the original amount.

Hope this helps you

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Ruby ate 1/3 (fraction) of a pizza, and Angie ate 1/5 (fraction) of the pizza. How much pizza did they eat in all?
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