Answer:
Step-by-step explanation:
<u>We know that:</u>
<u>Solution:</u>
- 30 kilometers = 1 hour
- => 30 x 21/2 kilometers = 21/2 hours
- => 15 x 21 kilometers = 21/2 hours
- => 315 kilometers = 21/2 hours
Hence, in 21/2 hours, the cyclist rides 315 kilometers.
Answer: 12 bowls
Step-by-step explanation:
Divide: 8 : 2 /3= 8/ 1 · 3/2= (8 · 3 / 1 · 2) = 24/2 =12
To divide one fraction by another, invert (turn upside-down) the second fraction, then multiply.
8 : (2/3) = 12/ 1= 12
Answer:
Daniel (now) is 3 years old, (2 years ago) is 1 year old.
Kevin (now) is 6 years old, (2 years ago) is 4 years old.
Step-by-step explanation:
Now:
-Kevin: k = d + 3
-Daniel: d
2 years ago:
-Kevin: k - 2 = 4(d - 2)
-Daniel: d - 2
We have the equation:
(k - 2) + 2 = k
4(d - 2) + 2 = d + 3
4d - 8 + 2 = d + 3
3d - 6 = 3
3d = 9
d = 3
k = d + 3 = 3 + 3 = 6
I think is
(x + y ) ( 2x - xy + 2y)
2x2 - x2y + 2yx + 2xy - xy2 + 2y2