It would be: 80/20 = 4
so, she requires 4 boxes.
Answer:
2/3 hour
Step-by-step explanation:
We can add the fractions, then multiply by the time, or we can multiply each by the time and add the results.
(1/5 +1/3)(1 1/4) = (8/15)(5/4) = (4·2·5)/(3·5·4) = 2/3 . . . hours
alternatively, ...
(1/5)(1 1/4) +(1/3)(1 1/4) = (1/5)(5/4) +(1/3)(5/4)
= 1/4 +5/12 = 3/12 +5/12 = 8/12 = 2/3 . . . hours
It takes Marty 2/3 hours (40 minutes) to shower and eat breakfast.
Answer:
Method 2:
⇒(1,000-10)×(30+7)
=1,000×(30+7)-10×(30+7)
=30,000+7,000-300-70
=37,000-370
=36,630
Method 1:
990×(40-3)
=990×40-990×3
=39,600 -2970
=36,630
Answer:
x = 16
Step-by-step explanation:
(b)
Since the triangles are similar then the ratio of corresponding sides are equal, that is
= , substitute values
= ( cross- multiply )
10x = 160 ( divide both sides by 10 )
x = 16
Hello from MrBillDoesMath!
Answer:
See Discussion below
Discussion:
A function f is even if f(-x) = f(x)
f(x) f(-x) Are they equal?
----------------------------------------------------------------------------------------
-x^8 + 2x^6-5x -(-x)^8 + 2(-x)^6 + 5x No
3 abs(x) - 4 3 abs(-x) -4 Yes
log5 x^2 log5 (-x)^2 Yes
(6x)^ (1/7) (-6x)^(1/7) No
e^(x^2-x) e^( (-x)^2+x) No
(x^8 +5x^2)^(-1) ( (-x)^8 + 5 (-x)^2) ^(-1) Yes
Answers with Yes, above are even functions.
Regards,
MrB
P.S. I'll be on vacation from Friday, Dec 22 to Jan 2, 2019. Have a Great New Year!