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lys-0071 [83]
3 years ago
9

A cone has a base radius of 7 centimeters and a height of 21 centimeters.

Mathematics
1 answer:
Alona [7]3 years ago
7 0
Use the following formula 
V = pi*r^2*h/3

Plot the numbers into the formula
V = pi*7^2*21/3

V=1077.57

Have a nice day
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Through: (-2, -1), slope = -1
oksano4ka [1.4K]

y= -1x -3

that's equation of the line

7 0
2 years ago
Linda's penny bank is 2/3 full. After she removes 80 pennies, it is 1/2 full. How many pennies can Linda's bank hold?
Ksju [112]
Let x = the total number of pennies her piggy bank can hold.
Then 2/3x = the number of pennies she started with
Then 2/3x - 80 = the number of pennies she has left after taking out 80 pennies.
Then 1/2x = the number of pennies she has left after taking out 80 pennies.
Build the equation.

2/3x - 80 = 1/2x

Subtract 1/2x from each side of the equation.

(2/3x - 80) - 1/2x = 1/2x - 1/2x

1/6x - 80 = 0

Add 80 to both sides of the equation.

(1/6x - 80) + 80 = 0 + 80

1/6x = 80

Divide both sides by 1/6.

(1/6x) / 1/6 = 80 / 1/6

x = 480

So, Linda's piggy bank can hold 480 pennies!

8 0
3 years ago
F(x) =3 times square root of (3x + 10) + 2<br> g(x) = x^2- 7x<br> (f of g)(10)=
Naily [24]
Is there a worksheet that goes with it? So I can understand better
7 0
3 years ago
A piece of wire is 30 m long. What will be the length of each side if the wire is used to form
Mariulka [41]

Answer:

7.5 m

10 m

Step-by-step explanation:

i) 30 m ÷ 4 = 7.5m

iii) 30m ÷ 3 = 10m

7 0
2 years ago
-4 &lt; - 13( a + 6) -1 7
krek1111 [17]

Answer:

-4 < -13(a+6)-17

-4<-13a+(-78)-17

-4<-13a+(-95)

-4<-13a-95

91<-13a

-91>13a

-7>a

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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