Answer:
-4
Step-by-step explanation:
The coefficient is the number that multiplies the variable.
To find the coefficient, you'll see it right next to the variable.
Here, x is the variable.
-4x, -4 is right next to x, so it's the coefficient
:)
<span>Direct proof. A direct proof is a way of establishing the truth or falsehood of a given mathematical statement by a combination of established facts, usually axioms, lemmas and theorems. It assumes the hypothesis of a conjecture is true and then uses a series of logical deductions to prove that the conclusion as well.</span>
Answer:
20 days
Step-by-step explanation:
t = time required by one worker to complete the job alone
(t+8) = time required by the other worker
So:
7.5/ t + 7.5/ (t + 8) = 1
Solve for t.
...
t = 12 days, the first guy working alone
The other worker would finish the job in 20 days.
Well the answer options are a bit confusing but the steps are 1, 2, & 3.
