<span>How many times does the quadratic function below intersect the x-axis?
</span>A. 2
20 weeks, earnings $(15 + 35), spending $300:
<span>20(15 + 35) - 300 = amount of money she has left
</span>
Best Answer: Bill's time to do the whole job, B
Jeff's time, B + 5
time they actually work, 6.
6/B + 6/(B+5) = 1
6(B+5) + 6B = B(B+5)
6B + 30 + 6B = B² + 5B
B² - 7B - 30 = 0
(B - 10)(B + 3) = 0
B = 10 or B = -3, and we reject the negative solution.
the equation is based on adding the fractions of the whole job each does. if Bill takes B hours to do the whole thing and works 6, he does 6/B of the job. similarly for Jeff.
in the 2nd problem,
a = time of experienced accountant
2a = time of new accountant
10 = time each actually works
10/a + 10/(2a) = 1 ........ multiply all by a
10 + 5 = a
a = 15 hr.
Actually those 4 angles are equal to 110 because those are vertical angles
Answer: $3.35 each
Step-by-step explanation:
$150.75 divided by 45= $3.35
