2x^2+16x+42=0 what is the answer?
1 answer:
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The unit rate of road construction is 2 miles per day.
Step-by-step explanation:
Given,
In days
miles road is constructed.
To find
The rate of road constructed per day
Method
We will apply unitary method to solve it.
Now,
In days
miles road is constructed.
In 1 day the road will be constructed = ÷
miles
= 2 miles
see the attached figure to better understand the problem
we know that
1) If angle 1 and angle 2 are complementary angles
then
m∠1+m∠2= ------> equation A
2) If angle 1 and angle 2 are congruent angles
then
m∠1=m∠2 ------> equation B
Substitute equation B in equation A
m∠1+(m∠1)=
2m∠1=
m∠1=
therefore
<u>the answer is</u>
