Answer:
20
Step-by-step explanation:
If you work this out you get 1:
5/100*20
5 divided by 100 is 0.05 then 0.05 times 20 is 1
Answer:
6.5 seconds
Step-by-step explanation:
Keep in mind that when 
, this is the same height for both when the model rocket takes off and lands, so when the rocket lands, time is positive. Thus:
So, the amount of seconds that the model rocket stayed above the ground since it left the platform is 6.5 seconds
Answer:
car a, car b
Step-by-step explanation:
car a 2x + 2= 4x
car b 3x + 3= 9x
both cars 13x
One way to do this is to use ratios
another way is to graph it
if you use ratios then
1:25=5:125
1/25=5/125
1/25=1/25
therefor theya re in same ratios
(x,y)=(1,25)
find (3,y)
1:25 =3:y
1/25=3/y
multiplyh both siddes by y
y/25=3
multiply both sides by 25
y=75
the point is (3,75)
19/15 OR 1 and 4/5
First find a common denominator, which in this case is 15. So put 15 as each of the fractions denominators. Then multiply the numerator by what you multiplied to the denominator.
EXAMPLE
3/5 x 3/3 = 9/15
2/3 x 3/3 = 10/15 Ten plus nine =s 19. Keep the denominator the same. Turn into a mixed number by figuring out how many times 15 goes into 19 (once) and addng what's left. (4/5) You should get 1 and 4/5
