So PEMDAS
the order of simplification/operation is
parenthaseese
exponents
multiplication or division whichever comes first
addition or subtraction whichever comes first
so we work the parenthasees inside to out
inside parenthaseese=(10-4/2)
so no exponents so skip
there's division so we do that
4/2=2/1=2
then we have
(10-2)
subtraction
10-2=8
(8)
next parenthaseese/bracket
[5 times (8)+15]
multiplication
5 times 8=40
[40]
other brackets
{390-[40]+15}
subtraction
390-40=350
{350+15}
350+15=365
outside
2 times {365} times 2
multiplication
2 times 365=730
730 times 2=1460
Answer:
11.81
Step-by-step explanation:
5 1/4 per 20 min (1/3 of an hour)
5.25 (5 1/4) * 3 = 15.75 pounds per hour
$0.75 earned per pound
So, 15.75 * $0.75 = $11.81
Answer:
x+(x+7)
Step-by-step explanation:
sum=add all together
Answer:
x = 1
Step-by-step explanation:
5x^5 + 5 = 10
Start the solution by subtracting 5 from both sides:
5x^5 = 5
Dividing both sides by 5 yields x^5 = 1.
Taking the 5th root of both sides, we get x = 1
Answer:
48 minutes.
Step-by-step explanation:
Suppose she read x pages in the morning in t hours. Then we have the equation:
x = 60t.
In the evening we have
x = 40(2 - t) ( because she read a total of 2 hours and the same number of pages as in the morning).
Equating the 2 equations we have:
60t = 40(2 - t)
60t = 80 - 40t
100t = 80
t = 0.8 hours.
That is 0.8 * 60 = 48 minutes