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Virty [35]
3 years ago
10

First person to respond will be marked brainly

Mathematics
1 answer:
vaieri [72.5K]3 years ago
8 0

Answer:

1.) V=πr2h=π·6.52·16≈  2123.71663, rounded= 2123.72

2.)V=πr2h=π·22·3≈37.69911, rounded= 37.80, or 37.8

3.) V=πr2h=π·12·3≈9.42478, rounded= 9.42

4.)70.69

5.)V=πr2h=π·3.82·3≈136.09379, rounded= 136.09

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Which is the better by 3 pounds for $8.31 or 5 pounds for $12.95 explain
sleet_krkn [62]
Do $8.31/3 and $12.95/5 and that will give you a price per pound and whichever is cheaper would be a better deal.
6 0
3 years ago
The average (also called mean) number of calories I consumed in the last 4 days is 2100. Today I decided to splurge and consumed
nikdorinn [45]
Wi ZB said d’ne26323
4 0
3 years ago
Please help me with this question I will give BRAINLIEST to the correct answer
anyanavicka [17]

A)   y= (-1/2)x+50

 (y=(-1/2)4 +50 = -2+50= 48)

Y=( -1/2 )8-50=-4+50 =46

B)    -1/2X+50>=40

         -1/2X>= -10

           X<=20

To start the meeting with 40 students it should be 20 minutes or less before the meeting

 Draw the line with the zero in the middle

Draw a closed circle at +20 and from that point draw a line to the left


5 0
3 years ago
Do not use your calculator for Parts 1 through 4.
Hunter-Best [27]
You have to understand how piecewise functions first
I hope you do because I won't be explaining it here



1.
if it is continiuous at x=1 then the part of the function that approaches 1 from the left is the same value
so we have f(x)=3-x for x<1, so evaluate it for x=1,
we would get 3-1=2
so
if a=2 and b=3

f(x)=2x²+3x
for x=1, we get 2+3=5

it approaches 2 from the left but equals 5
2≠5
so it is not continuous because it doesn't approach the same value at x=1




2.
alright
so we established that it should approach 2 because we had the f(x)=3-x
so
f(1)=2=ax²+bx
2=a+b
the relationship is 2=a+b



3.
same as before, but use the other function, the one that is defined at x≥2
5x-10, 5(2)-10, 10-10, 0
it approaches 0
so
we must find one such that f(x)=0 for x=2 with the ax²+bx
0=a(2)²+b(2)
0=4a+2b
if we minus 2b both sides
-2b=4a
divide by 2
-b=2a
add b both sides
0=2a+b



4.
2=a+b
0=2a+b

2=a+b
minus b both sides
2-b=a
subsitute
0=2a+b
0=2(2-b)+b
0=4-2b+b
0=4-b
b=4

sub back
2-b=a
2-4=a
-2=a

a=-2
b=4


5.
graph f(x)=-2x²+4x from x=1 to x=2 and put a closed dot at (1,2) and an open dot at (2,0)
4 0
3 years ago
Please help i don't know this at all
melamori03 [73]

Answer:

simplify the expressions

Step-by-step explanation:

you just have to simplify all the different expression and then you can see the ones that are the same

6 0
4 years ago
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