we are given
Jim can lay bricks for a fireplace and chimney in 5 days
Jim's 1 day work is

we are given
With his father's help he can build it in 2 days
so, both can do same work in 2 days
so, both's 1 day work is

Let's assume
his father to build it alone in x days
his father 1 day work is

so, both's 1 days work is
so, we can set it to 1/2
we get
now, we can solve for x
now, we can cross multiply
now, we can solve for x

so,
his father to build it alone is
............Answer
Answer:
D
Step-by-step explanation:
the domain of this is x>=7
the range is x<=1
so 6 is in neither
Answer:
Ver explicacion
Step-by-step explanation:
La frecuencia de una onda se define como el número de ciclos completos que realiza una partícula en un segundo.
f = n / t = 15 ciclos / 3 segundos = 5 ciclos por segundo o Hertz
El período de una onda es el tiempo que tarda la onda en realizar una oscilación o ciclo completo.
T = t / n = 3/15 = 0,2 segundos
Answer:
584.03
Step-by-step explanation:
Given that principal amount = 500.20 dollars
Interest rate = 3 7/8% p.a.= 3100/8(12) per month
Period = 4 years = 4(12) = 48 months.
A= P(1+r/n)^nt
Here n = 12 t = 4 years.
Substitute to get
Future value = 
=584.03
C.
<u>The</u><u> </u><u>equat</u><u>ion</u><u> </u><u>should</u><u> </u><u>be</u><u>.</u><u>.</u><u>.</u>
a^2 + b^2 = c^2
x^2 + (x+3)^2 =10.81665383^2
<u>When</u><u> </u><u>you</u><u> </u><u>plug</u><u> </u><u>it</u><u> </u><u>in</u><u>.</u><u>.</u><u>.</u>
6^2 + (6+3)^2 = 117
6^2 + (9)^2 = 117
36 + 81= 117