To work out this question, you need to think of what ratio there is of white cars to yellow cars.
You know that there are 9 times as many white cars as yellow cars.
This means for every white car you have, you have 9 yellow. 1:9.
So for every 10 cars we have (9+1) we have 1 white car and 9 yellow cars.
Next, we take the total number of cars (40) and divide it by the total number of white+yellow cars we have (10)
40 / 10 = 4.
Now, we times 4 by the numbers in the ratio.
1 x 4 = 4.
9 x 4 = 36.
We can double check this by doing 36 / 4 = 9.
We know that Rafael counted 4 white cars.
Answer:
Not sure what number 1 is but number 2 is true.
Step-by-step explanation:
The first, third, and sixth are correct.
Answer:
2
7
–
3
8
=
– 5
56
Result in decimals: -0.089285714285714
Calculation steps:
2
7
–
3
8
=
2 × 8
7 × 8
–
3 × 7
8 × 7
=
16
56
–
21
56
=
16 – 21
56
=
– 5
56
Answer:
14
Step-by-step explanation:
A = 1/2 BH
B = 5H
A = 490
490 = 5/2 * H^2
H = 14
