Laura can finish payroll in 3 hours. it takes ben 5 hours to do the same job. If they work together, how long should it take the
m?
1 answer:
Answer:
15/8 hours .................
Step-by-step explanation:
Let L be Laura, and B be Ben. Then:
3L=1
5B=1
Next:
15L=5
15B=3
15(L+B)=5+3=8
15/8 (L+B)=1
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Answer:
If
y
varies inversely as
x
then
XXX
x
⋅
y
=
c
for some constant
c
We are told when
x
=
2
then
y
=
15
So
XXX
2
⋅
15
=
c
XXX
⇒
c
=
30
and
XXX
x
⋅
y
=
30
Therefore when
y
=
3
XXX
x
⋅
3
=
30
XXX
→
x
=
10
Step-by-step explanation:
Answer: transportation
Step-by-step explanation:
M = (t+1)/(t-3)
m(t-3) = t+1
mt-3m = t+1
(m-1)t = 3m+1
t = (3m+1)/(m-1)
24-1 = 23
6-1/4 = 5 3/4
23/5 3/4 = 4
The constant is 4, so Vanessa is correct
The answer is:
D. Vanessa is correct because the quotient when dividing the values in the bottom row by the values in the top row is always 4.
Answer:
it's a 50/50 chance per child because a boy requires one X chromosome and one y chromosome
