Answer:
x = -24
y = 66
Step-by-step explanation:
12x+9y = 102
12x+16y = 432
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y = 66
4x + (66*3) = 102
198-102 = -96
-96 / 4 = -24
Answer:
The first one; -1.2<6.9
Step-by-step explanation:
Answer:
The upper bound is 399.5
Step-by-step explanation:
Let's start by calculating the mean value of the distribution as the addition of all values given divided by 12:
Average = 289.75.
If the standard deviation is 56, then the upper bound in 95% the confidence interval for the mean price of the phones is going to be given by the mean value added to 56 times 1.96 (since 95% of the population is withing 1.96 times the standard deviation)
That is: 289.75 + 56 * 1.96 = 399.51
which rounded to one decimal place gives: 399.5
Good evening ,
Answer:
The inverse of the function y = x² - 12 is
x = √(y + 12)
Step-by-step explanation:
for y ≥ -12 :
x² - 12 = y ⇔ x² = y + 12 ⇔ x = √(y + 12).
:)
Answer:
x - 2y - 5= 0
i think is the answer for number 1 i hope it is
