Hi there!
This gets pretty easy once you understand how to do these kinds of problems. Let's look at the words in the question.
Adison earned 25$. We can push that to the side.
She loaned her friend 18$, which means she took some money away from her first part of it.
25 - 18 = 7$. Now she has 7$ left. (A calculator would be useful to answer these!)
Now, let's put the 7 to the side and check out the rest of the equation. Looks like Adison's grandmother gave her 50 more dollars, and we know that more means to add.
50 + 7 = 57$.
Now, the final part of the question says she ended up with 86$ because she had money before she earned more. To see how much money she had originally, we can subtract 86 from 57.
86 - 57 = 29$.
We now understand that Adison originally had 29$ before earning anymore money.
Hope this helps!
Answer:
15 girls, 10 boys
Step-by-step explanation:
Since the ratio is 3:2, then the ratio can be rewritten as 15:10. So there are 15 girls and 10 boys
The greatest common factor of 8x and 22yx is 2x.
I got this answer by factoring out 8 and 22:
8: 1,2,4,8
22: 1,2,11,22
Their greatest common factor was 2 and they both have x.
Your answer is 2x.
Answer:
$14
Step-by-step explanation:
What you would do is 84/6 considering the bike cost 6 times as much as the helmet. And you would get 14 so the helmet would cost $14. However to check it you can find what times 6 = 84 which 6 x 14 = 84.
Hope this helps!
To solve for the distance covered.
a) Solve for distance before applying the brake which is during the reaction time.
reaction time = 1.5 seconds, and the speed is 20m/s.
Distance = 20m/s * 1.5s = 30 m.
b) Distance covered during deceleration.
v² = u² + 2as
Deceleration, a = -7 m/s²
We would assume it decelerates to a stop. v = 0, u = 20 m/s
v² = u² + 2as
0² = 20² + 2*(-7)s
0 = 20*20 - 14s
0 = 400 - 14s
14s = 400
s = 400/14
s ≈ 28.57 m
Hence distance covered = distance covered during reaction time + distance covered during deceleration
= 30 m + 28.57 m = 58.57 m
So the car traveled ≈ 58.57 m
Hope this explains it.
