If the perimeter equals 30 and the length is twice the width, then the length is equal to 20 and the width is equal to 10.
Exact form: x= NEGATIVE 6/7
Answer:
x = 11/5 or 2 1/5
Step-by-step explanation:
propagate the negative through the bottom equation
-5x = -11
x = 11/5
Answer:
44.1 x 10^-2
Step-by-step explanation:
Since one grain
= 7 x 10^-5
6300kg = 7 x 10^-5 x 6300
Put 6300 in standard form
7 x 10^-5 x 6.3 x 10^3
Multiply the whole numbers and add the exponents
7 x 6.3 x 10^-5 + 3
44.1 x 10^-2
There are 44.1 x 10^-2 grains of sand in 6300kg
262.5 miles
explanation 1/4 is half of 1/2 so 52.5 is half of 105 and then 210 for an hour of travel
