This kind of problem request the use of harmonic mean:
if t₁ is the Time spent by Jessica, and
t₂, the time spent by Felecia, and t₃ the time spent by both, then the equation of that kind of problem will be:
1/t₁ + 1/t₂ =1/t₃.
t₁ = 1h45 min, t₂ (unknown, to be calculated), t₃ = 1 h, to ease things let' convert the time in minutes
t₁ = 105 min
t₂ = ?(time needed to Felicia to maw the lawn)
t₃ = 60 min
1/105 +1/t₂ = 1/60===> 1/t₂ = 1/60 - 1/105==> 1/t₂ =1/140
& t₂ =140 minutes or t₂ = 2h & 20 min
60. 40 percent of 150 yogurts comes to a sum of 60
I answered this recently.
Choices were:
A)Both m(x) and p(x) cross the x-axis at 7.
<span>B)Both m(x) and p(x) cross the y-axis at 7. </span>
<span>C)Both m(x) and p(x) have the same output value at x = 7. </span>
<span>D)Both m(x) and p(x) have a maximum or minimum value at x = 7.
</span>
The true statement was Choice C. Both m(x) and p(x) have the same output value at x = 7.<span> </span>
Answer:
<D = 147 degrees
AB = 14
BC = 12
Step-by-step explanation:
From the given parallelogram;
<A and <D are supplementary, hence;
<A + <D = 180
33 + <D = 180
<D = 180 - 33
<D = 147 degrees
Since AB = CD
Hence AB = 14
Also since BC = AD, BC = 12
<em>This shows that the opposite side of the parallelogram are parallel</em>
When two negatives are put together, it makes a positive. Something subtracted by a negative number, will then have that negative number added to it. Don't ask me to explain, it's just a rule in math.
