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3 years ago

Whats the nearest tenth of the square root of 27/4

Mathematics

1 answer:

natka813 [3]3 years ago

6 0

Answer:

2.6

Step-by-step explanation:

when you divide 27 by 4, you get 6.75

when you square root 6.75, you get 2.59, the 0.09 makes the 0.5 round up to 0.6. so 2.6

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Jimmy goes for a run with his friends on the weekend. They run 11km in 5 hours. How long

zheka24 [161]

11km = 5h
1km = 5h divide by 11km = 0.45h
16.5km = 0.45 x 16.5 = 7.42 h

7 0

2 years ago

Approximate the change in the volume of a sphere when its radius changes from r= 5ft to r= 5.1ft (v(r)= 3/4 pi r^3)?

leva [86]

Answer:

18.03 cubic feet

Step-by-step explanation:

Hello,

Step 1

find the volume of the sphere when radius= 5 ft

$v(r)= \frac{3}{4} \pi r^3\\v(5)= \frac{3}{4}\pi (5\ ft)^3\\v(5)= \frac{3}{4}\pi *125\ ft^{3} \\v(5)=294.52\ cubic\ feet\\$

Step 2

find the volume of the sphere when radius= 5.1 ft

$v(r)= \frac{3}{4}\pi r^3\\v(5.1)= \frac{3}{4} \pi (5.1\ ft)^3\\v(5.1)= \frac{3}{4}\pi *132.651\ ft^{3} \\v(5.1)=312.551\ cubic\ feet\\\\$

Step 3

Compare the Volumes to find the change

$\frac{v(r_{2})}{v(r_{1})} =\frac{312.551}{294.52} =1.06$

the volumen of the sphere with radius = 5.1 is 1.06 times bigger than the first one(r=5)

Now, find the change

$change= {v(r_{2})-{v(r_{1})}} \\change=312.551\ cubic\ feet\ -294.52 cubic feet \\ change=18.031\ cubic\ feet$

change=18.03 cubic feet

Have a great day.

4 0

2 years ago

What is the best approximation for the area of a circle diameter of 19 m?

Maslowich

The formula for an area of a circle is
A=pi times radius squared

there for you do pi times 9.5 to the power of two/squared (radius is half of the diameter so 19 divided by 2 is 9.5)

pi times 9.5 squared
= 283.5

I rounded to the nearest tenths

7 0

3 years ago

GUYS PLEASE HELP: Evaluate the function f (x) = 2x+6 for: f(-19) =

Mariulka [41]

Answer:

-32

Step-by-step explanation:

f(x) = 2x + 6

f(-19) = 2*(-19) + 6

= -38 + 6

= -32

3 0

2 years ago

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Tickets to a science museum cost $19.95 each. there is a $3 charge for each order no matter how many tickets are ordered. write

cestrela7 [59]

$19.95x +$3
x stands for number of tickets purchased.
$19.95(5) + $3
$99.75 + $3
$102.75 for 5 tickets

5 0

3 years ago

Read 2 more answers