Tom is going to make some concrete by mixing sand, cement and gravel in the ratio 1:3:4. Tom
wants to make 200kg of concrete mix.
He has 30kg of cement, 75kg of sand, and 105kg
of gravel. Does Tom have enough materials to
make the concrete mix?

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify

30.5*10=350$

you have to multiply the number without the decimal point then add it later but if its tenn u must move the place value of the decimal point 1 to the right.

answer: it is 8

step-by-step explanation:

you know why its 8

for future students the answer is b

hope i

-lavira: )