Answer:
63 inch²
Step-by-step explanation:
area of triangle: (12 x 12) / 2 = 72
area of square cut out: 3 x 3 = 9
area left: 72 - 9 = 63
Answer:
2^7
Step-by-step explanation:
Dividing fractions with exponents means you subtract, so 2^6/2^4 = 2^6-4 =2^2
Multiplying numbers with exponents means adding the exponents, so 2^2+2^5 = 2^2+5 = 2^7
Take an example y = 2^x The exponent is x.
when x = 1,2 and 3 y will be 2^1 = 2, 2^2 = 4 and 2^3 = 8
So the values of y grow very rapidly with base 2.
They would grow even more rapidly with higher bases.
if the base = 1 there would be no growth because 1 to any exponent still = 1.
1^2 = 1 , 1^1000 = 1 and so on.
Meet in 2 hours
means that the distance covered over 2 hours adds to total distance which is 13miles
basically, imagine instead of moving in oposite directions, toward each other, imagine that one moves for 2 hours then theh other one moves for another 2 hours, total 13 miles
so
speed1=x
speed2=y
x is 2.1 more than y
x=2.1+y
distance=speed times time
time=2hours
speed=x and y
total distance=13
13=2x+2y
x=2.1+y
sub
13=2(2.1+y)+2y
13=4.2+2y+2y
13=4.2+4y
minus 4.2 from both sides
8.8=4y
divide both sides by 4
2.2=y
sub
x=2.1+y
x=2.1+2.2
x=4.3
the hikers hiked 2.2mph and 4.3mph