Tony calculates that 3 cubic metres of concrete is enough for the path. He decides to use a concrete mix which has: cement = 1 partsand = 2 partsgravel = 3 parts How many cubic metres of gravel does Tony need? Question response area Select one option 0.5 1.0 1.5

the answer

b. they are parallel and will never intersect.

you forgot an image

step-by-step explanation:

its 8

step-by-step explanation:

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.