Answer: 37
Step-by-step explanation:
As per given description in the question, we have
Population standard deviation : 
Critical value for 98% confidence interval = 
Margin of error : E= 1 mile per gallon
Formula we use to find the sample size :
i.e. 
Therefore , the number of automobiles should be used in the test =37
The correct answer is option D.Which is ( x - 1 ).
<h3>What is a quadratic equation?</h3>
It is a polynomial with a degree of 2 or the maximum power of the variable is 2 in quadratic equations. It has two solutions as its maximum power is 2.
The solution of the given quadratic equation will be:-
-2x² - 22x + 24 = 0
x ² + 11x - 12 = 0
x² + 12x - x + 12 = 0
x ( x + 12 ) -1 ( x + 12 ) = 0
( x -1 ) ( x + 12 ) = 0
Therefore the correct answer is option D.Which is ( x - 1 ).
To know more about quadratic equations follow
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3(x+2)-3+x+17=40
3x+6-3+x+17=40
4x+20=40
-20 -20
4x=20
/4 /4
x=5
Answer:
area = 202.5 yd²
Step-by-step explanation:
area = (15 x 12 ) + (3)(15)(0.5)
area = 180 + 22.5 = 202.5 yd²
