7.92 + 5.37 using rounding to estimate

Rounding decimals is like rounding whole numbers. 7.92 is closer to 8 right?. Because if you take out the decimal point it would be 792. And you rounded that to 800 now put the decimal point back which is 8.00= 8. do the same thing to 5.37 and you get 5. 8+5= 13 and that is your answer. Hope this helped

38.5

step-by-step explanation:

lets say, first number = r

second number = 3r+7

total = 49

(r)+(3r+7)= 49

4r+7 = 49

4r = 42

r = 42/4

r= 10.5

3r+7 = 3(10.5)+7 = 38.5

hope this

the amount you'd have after the work is $1.55

step-by-step explanation:

you subtract 95% from $31.