Question

Help! How would I solve this? √ 30*20*0.75

Answer 1

That's suppose to be a long radical sign

Answer 2

ok

Answer 3

just grab your calculator and enter them in

Answer 4

why don't you multiply the numbers inside first?

Answer 5

lol ^^^

Answer 6

thats a good way forward
then take the square root of the result

Answer 7

do you need a exact answer?

Answer 8

450

Answer 9

I'm trying to figure out how I would solve it

Answer 10

450 ^(.5)

Answer 11

or \[\sqrt{450}\]

Answer 12

thats easy using a calculator

Answer 13

It has to do with how fast a vehicle is going.

Answer 14

or if you want an exact answer find the prime factors of 450

Answer 15

Around 21?

Answer 16

Is that how I would do it every single time just multiply and find the square root of that number?

Answer 17

then pick out perfect squares from these factors

Answer 18

yes - the calculator will give you a decimal answer that you acn correct to the number of decimals you may want

Answer 19

21 is correct to the nearest whole number

Answer 20

Ok great. Thank you so much for the help

Answer 21

yw

Answer 22

if you are doing it "by hand"
\[ \sqrt{30 \cdot 20 \cdot 0.75 } \\
\frac{\sqrt{3\cdot 2\cdot 5 \cdot 2 \cdot 2 \cdot 5 \cdot 3 } }{\sqrt{4}}

\]and look for pairs of numbers

Answer 23

you would pull out a pair of 3's , a pair of 2's and a pair of 5's (leaving one 2 inside the square root
\[ \frac{3\cdot 2 \cdot 5}{2} \sqrt{2} \]
or
\[ 15 \sqrt{2} \]