Answer:
Answer is C
Step-by-step explanation:
There is not enough samples.
Remember that quadratic formula:
is used to solve quadratic equations of the form
.
Four our problem, the first one,
, is not in the form
. So is not a good idea to use the quadratic formula for this one.
The second one,
, is in the correct form. Notice that in this equation
,
, and
.
It would be appropriate to use the quadratic formula to solve this one.The third one,
, can be expressed as:
. This equation is also in the correct form. Here
,
, and
.
It would be appropriate to use the quadratic formula to solve this one.The fourth one,
, is not in the form
. So is not a good idea to use the quadratic formula for this one.
We can conclude that you should use the quadratic formula to solve the
second and
third equations.
Answer:
104 miles
Step-by-step explanation:
52/2.5 = 20.8
20.8 miles = 1 inch
20.8 x 5
104 miles = 5 inches
A; b; c; d = first; second; third; fourth shelfa + b + c + d = 250 cmb = 2a + 18c = a - 12d = a + 4in terms of a, plug all equations into originala + (2a + 18) + (a - 12) + (a +4) = 2505a + 10 = 2505a = 240a = 48b = 2(48) + 18b = 96 + 18b = 114 cm/1.14 m
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