Answer:
Since the screw is smaller than 3/4 mm and larger than 5/8 mm,
we can make an inequality from the given data
3/4 > x > 2.5/4
where x is the width of the screw
So since the value is greater than 2.5/4 and less than 3/4,
the approximate value will be the mean of the two values
(2.5/4) + (3/4) = 5.5/4 = 11/8 mm
Step-by-step explanation:
b. 22, 16, 18, 36 because it has the highest number of all the choices and the second lowest. (Hope you know what I mean by that!)
a. 14, 24, 26, 28 (mean is 23)
b. 16, 18, 22, 36 (mean is 23)
c. 20, 22, 22, 28 (mean is 23)
d. 19, 21, 25, 27 (mean is 23)
The answer you are looking for is (1, -8)
remember that: x=[(-b/2a)]
and that the problem is set up as y=ax^2+bx+c
calculate:
x=[-8/2(-4)]
x=[-8/-8]
x=1
then:
y=(-4)*1^2+(8*1)-12
y=(-4)+8-12
y=4-12
y=(-8)
(1, -8)