Answer:
100 + x
Step-by-step explanation:
If Peter has an initial 100$, and his mom gives him an additional x$, then we can simply write the total amount in an expression using addition as such:
100 + x
So Peter now has 100 + x amount of dollars.
Cheers.
First, move all the variable numbers to one side. Then, just solve for the variable.
Item Time bought
MIcroscopes Every 5 years
Safety goggles Every 4 years
Test Tube Every 2 years
It would take 20 years for them to buy these three items at the same time.
We simply need to find the LCM or least common multiple of the 3 items using the number of years.
Microscopes - 5 years → 5, 10, 15, 20
Goggles - 4 years → 4, 8, 12, 16, 20
Test tubes - 2 years → 2, 4, 6, 8, 10, 12, 14, 16, 18, 20
It is not.
First, divide 36 by 4.
= 9
So, 9 for each hat.
9 x 7 =63
In conclusion, it is in fact not equivalent.
It is 11 because 1 18÷9 = 2 2+3 = 5 5+5 = 10 10+6 = 16-6=10 10+6=16 16-5 equal 11
