Answer: 120m2
Step-by-step explanation:8x11=88
19-11=8- length of triangle base. 1/2 base x height= 4x8=32
32+88=120m2
10. B, 3/10.
Because if you add all the zombies together, you will get 20 zombies. And there are 6 zombies with the traffic cone on their head, it would be 6/20 which is 3/10.
12. C, 2.
First let's learn what is rage, rage is the biggest number subtract the smallest number.
So if we look at the first group of numbers, the biggest one is 14 and the smallest is 3:
14-3 = 11
Then the second set of numbers, the biggest is 21 and smallest is 12:
21-12= 9
So when we find the difference, we subtract:
11-9 = 2
So the answer is 2.
Answer:
30 ml of 45% salt solution and 20 ml of 30% salt solution.
Step-by-step explanation:
Let x be the amount of 45% salt solution and y be the amount of 30% salt solution
the two equation will be:
x+y=60 -- A
0.45x+0.3y=0.4(60) -- B
Solve by substitution
Rewrite Equation A
x+y=60
x=60-y --- C
Substitute C into B
0.45(60-y)+0.3y=24
27-0.45y+0.3y=24
-0.15y=-3
y=20
<u>Substitute</u> the y=20 into equation C
x=60-20
x=30
Therefore, there was 30 ml of 45% salt solution and 20 ml of 30% salt solution.
Answer:
Step-by-step explanation:
I would take 19hours/2weeks=9.5 hours a week than 9.5hours a week times 7 weeks equal 66.5 hours in 7 weeks
Answer 66.5 hours
R×16=chairs.
We do this because if we multiply the rows of chairs (r) by how many are in each row (16) then we get our total amount of chairs.