help me i got 10 math question plz help 1st one

There were 12 boys and 20 girls in a chorus.

What is the ratio of boys to girls?

A 5 : 8
B 3 : 5
C 3 : 8
D 5 : 3
2one Jack's pancake recipe calls for 2 tsp baking powder and 3 c of flour.
How much baking powder is needed if Jack uses 9 c of flour? 3rd one Dirk plants 12 seedlings in 8 min.
At this rate, how many seedlings could he plant in 70 min?
4th one
The table shows the pricing for four different types of gasoline.
Type Cost
A $20.20 for 10 gal
B $26.04 for 12 gal
C $28.14 for 14 gal
D $30.45 for 15 gal

Which type costs the least per gallon? 5th one How long does it take to travel 300 mi at a constant speed of 15 mi/h? 6th one Enter the missing numbers in the boxes to complete the table of equivalent ratios of time to distance.
Time (h) Distance (mi)
2
9
12 8
18
7th one Drag the amounts to order them from greatest to least.
1 lb = 16 oz

1 oz ≈ 28.3 g

800 g1.6 lb30 oz 8th one The equation 4s = 33.4 models a constant rate situation.
Drag and drop the value of 2s in the box. 2s = A 16.7 B 29.7 C 30.4 D 37.4 9th one Jacob buys four muffins for $5.00.
What is the cost of 7 muffins?
10th one A car wash cleans 3 cars in 24 min.

How many cars does the car wash clean in 56 min?

Enter your answer in the box.

Respuesta :

1. a 

2. 6 tps baking powder. For every 3, there is two. 3 multiplied by 2 is 6.

3. 12/8 = 1.5 seedling per minute in 70 minutes...
1.5 * 70 = 105 seedlings can be planted in 70 minutes

4. idk sorry

5. time = distance / speed
time = 300/15
time = 20 hrs


7. The ratio between 12 and 8 is 1.5, so you need to divide every other number by 1.5.
2/1.5=1.3

9/1.5=6

18/1.5=12

8. So, problem statement tells you that 1lb = 16oz and that 1oz = 28.3g. That means that 1lb = 16 * 28.3g = 452.8g

You have three items, convert their weights to grams:
1) 800g
2) 1.6lb = 1.6 * 452.8g = 724.48g
3) 30oz = 30 * 28.3g = 849g

So, sorting from greatest:
3, 2, 1, or: 30oz, 1.6lb, 800g.

9. 5•7=30

10.it will clean 7 cars in 56 minutes
hope this helps and i hope its not confusing

Answer:


1.

It's B, the ratio of boys to girls is 12:20 so you simplify by 4 and get 3:5.

Step-by-step explanation: