Answer:
There would be 350 girls in the school.
Step-by-step explanation:
We can find this by creating two proportions. the first fraction would be the number of girls out in the sample:
7/12
The second part would be the amount of girls in the whole school. We can set the girls as x since we do not know.
x/600
Now we can set the two equal to each other and cross multiply.
7/12 = x/600
600*7 = 12*x
4200 = 12x
350 = x
Q1
Divide each distance by its time to find the speed for each driver.
T: 380 km / 4 hr = 95 km/h
M: 530 km / 5 hr = 106 km/h
Martine's average speed was greater.
Q2
Bronze to aluminum is 25:2
The alloy is bronze plus aluminum, so by adding 25 + 2 you get 27.
Bronze to total is 25:27
25 is 27 as x is to 55
25/27 = x/55
27x = 25 * 55
x = 50.926
Answer: 50.926 kg of bronze
Q3
Manipulative toys to art toys is 30:40
Total toys = 30 + 40 = 70
manipulative toys are 30 out of 70
30/70 * 100 = 42.9%
Answer:
42w^2-20w^2+16
Step-by-step explanation:
Answer:
Option C, Multiply 5/7 by 3
Step-by-step explanation:
<u>5/7 / 1/3 is same as 5/7 * 3/1</u>
5/7 * 3/1
<em>15/7</em>
Answer: Option C, Multiply 5/7 by 3
You divide 146 from 24 and get 6 with a few extra students, so you add another bus for those students, meaning 7 buses are needed total.
