Answer:
a,b,d,e for sho on engunity
1. 980 ÷ 100 = 9.8 = 1%
9.8 × 14 = 137.2
2. 50 ÷ 5 = 10 = 20%
10 ÷ 2 = 5 = 10%
20% + 10% = 30%
3. 78 × 5 (because 20% is 1/5) = $390
4. 6000 ÷ 100 = 60 = 1%
60 ÷ 2 = 30 = 1/2%
6000 - 30 = 6970
5. 25000 ÷ 100 = 250 = 1%
250 ÷ 5 = 50 = 1/5%
250 × 12 = 3000
3000 + 50 = 3050 = 12 1/5%
6. 75% is 3/4
12 ÷ 3 = 4 = 25%
4 × 4 = 16
7. 30/20 = 3/2 = 1.5
=150%
8. 20000 ÷ 100 = 200 = 1%
200 ÷ 4 = 50 = 1.4%
200 + 50 = 250
I hope this helps!
To solve: 9 + 2 + 42 × 5 − 1
=9+2+(42×5)-1
=9+2-1+(42×5)
=10+210
=220
To solve: (9 + 2) + 42 × (5 − 1)
=11+(42×4)
=179
One of the thing we should note is that multiplication always comes first, or we might get the wrong answer.
Hope it helps!
Answer: 4.5 years
Step-by-step explanation:
He will be 16.5 which is 1/2 of the 33 year olds age in 4.5 years
5x+3y=-9
-2x+y=8
The first step is the trickery (and quite frankly, hardest to explain) part. You need to multiply one equation by a number that will create one variable to be the negative version of the other...(Confusing, right? Don't worry, I'll show you)
We are going to solve for X first.
We will multiply the second equation by -3
5x+3y=-9
-3(-2x+y)=(-3)8
Now simplify:
5x+3y= -9
6x-3y= -24
Now combine the two equations (add them together)
11x= -33
Divide by 11
X=-3
Now plug X in to one of the first equations:
5(-3)+3y= -9
-15+3y =-9
3Y= 6
Y= 2
So your final answer is:
x= -3
Y= 2
Hope this helps!