We can calculate the number of hours she needs to babysit by the rule of three.
1 hour--------------------$11
x---------------------------$331
x=(1 hour x x$331) / $11=30.0909.... hours≈31 hours
She needs to work 31 hours.
Answer:
48km hr this is the answer in your question.
Zeroes are when f(x)=0
0=x^2+9x+20
factor
0=(x+4)(x+5)
set each to zero
x+4=0
x=-4
x+5=0
x=-5
zeroes are f(-5) and f(-4)
Given:
and are complementary angles.
To find:
The measure of .
Solution:
According to the definition of the complimentary angles, the sum of two complementary angles is always 90 degree.
It is given that, and are complementary angles. So,
Therefore, the measure of is 58°.