Answer:
7 and 11
Step-by-step explanation:
Suppose the numbers are x and y.
So it is given that
x + y = 18
x - y = 4
If we add the equations, we get
2x = 22
So x is 11 and y will be 7
Your Answer Is...
12.
(If you need an explanation, comment below.)
Glad I Could Help, And Good Luck!
~AnonymousGiantsFan~
the answer is 3 1/8!
sorry if this is really late,,, hope this helps <3
A quadratic in vertex form can be represented as
![y = a(x-h)^{2} +k](https://tex.z-dn.net/?f=y%20%3D%20a%28x-h%29%5E%7B2%7D%20%2Bk)
a represents reflection over the x-axis, and a vertical stretch or compress
- is reflection and a fraction (1/2) represents a compression.
-h represents a shift of that many units to the right (-2 shifts to the
right two units)
k represents a shift up or down (-2 is shifting down 2 units_
Reflected over the x-axis, Vertically compressed by a factor of 1/2, shifted 2 units to the right, and shifted 2 units down
Answer:
Step-by-step explanation:
From the attached photo
mean = 15.76
Standard deviation = 1.66
c) We want to determine a 90% confidence interval for the mean growth of pea plants
For a confidence level of 90%, the corresponding z value is 1.645. This is determined from the normal distribution table.
We will apply the formula
Confidence interval
= mean ± z ×standard deviation/√n
It becomes
15.76 ± 1.645 × 1.66/√7
= 15.76 ± 1.645 × 0.63
= 15.76 ± 1.04
The lower end of the confidence interval is 15.76 - 1.04 =14.72
The upper end of the confidence interval is 15.76 + 1.04 =16.8