Answer:
it is 3.6
Step-by-step explanation:
it's in the pictures below.
Answer:
x = 16
Explanations:
Since △ACD ~ △ABE, it means that:
CD/AD = BE/AE..........(*)
CD = 3x + 8
AD = AE + ED
AD = (x - 1) + 27
AD = x + 26
BE = 20
AE = x - 1
Substituting CD, AD, BE, and AE into equation (*)
(3x+8)/(x+26) = 20/x-1
Cross multiply:
(3x+8)(x-1) = 20(x+26)
3x² - 3x + 8x - 8= 20x + 520
3x²- 15x - 528 = 0
Divide through by 3
x² - 5x - 176 = 0
Solving the quadratic equation above for the values of x
x² - 16x + 11x - 176 = 0
x(x - 16) + 11 (x - 16) = 0
(x - 16)(x + 11) = 0
If x - 16 = 0
x = 16
If x + 11 = 0
x = -11
x cannot be -11 because x = -11 will make side CD and AE to be negative, and the sides of a triangle cannot be negative.
Therefore, x = 16
Answer:
on 18 at least, x= the square root of 34 :)
It is <span>A.
Dear Mrs. Khouri, u always cap dear and her place is a ms so thats cap,and u always cap someones name
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Step-by-step explanation:
c(x)= 0.9x^2 - 18.1x + 135.1
a = 0.9 , b = -18.1
the function becoming minimum for
x = -b/2a
x = (18.1)/(1.8)
x= 10.05
=> c(10.05)= 0.9(10.05)²- 18.1(10.05) +135.1
= 0.9(101.0025)-181.905+135.1
=90.90225 - 181.905+135.1
= 44.09725 km/h
