Eli is 17 years old because 17-4=13
and 17+13=30
Short answer: 100
I assume you want to find x.
We want an equation that says that x is equal to 105cm, minus that 5 percent, because that is his height before the 5% was added. That looks like:
x + 0.05x = 105
(0.05 is 5% in decimal form, which is necessary in equations like this).
x + 0.05x = 1.05x
1.05x = 105.
Isolate x by dividing both sides by 1.05
1.05x / 1.05 = x, 105 / 1.05 = 100
x = 100, so he was 100cm tall before summer
My original answer was 99.75. This is wrong because I used the 5% of 105, which is wrong because in the question it says his original height (which is x) had 5% added to it. So its 5% of x, not 5% of 105. This changes the whole equation.
Answer:
A!
Step-by-step explanation:
Answer:
1. 60 // It can be found between whole numbers 63 and 65.
2. 10 // It can be found between whole numbers 6 and 8.
3. 20 // It can be found between whole numbers 18 and 20.
Step-by-step explanation:
Rounding rules of rounding up if the next place is 5-9, or rounding down if the next place is 0-4.
Answer:
rip
Step-by-step explanation:
