Answer:
6 ± i and 6 ± i
Step-by-step explanation:
Let x be the first number.
Let y be the second number.
x + y = 12
x × y = 37
Solve for x in the first equation.
x = 12 - y
Put x as 12-y in the second equation and solve for y.
(12- y)y = 37
12y - y² = 37
- y² + 12y - 37 = 0
y = 6 ± i
Put y as 6 ± i in the first equation and solve for x.
x + 6 ± i = 12
x = 12 - 6 ± i
x = 6 ± i
Answer:
Step-by-step explanation:
Given that:
Mean μ= 100
standard deviation σ = 2.6
sample size n = 9
sample mean X = 100.6
The null hypothesis and the alternative hypothesis can be computed as follows:
The numerical value for the test statistics is :
z = 0.6923
At ∝ = 0.05
The critical value for the z score = 0.2443
From the z table, area under the curve, the corresponding value which is less than the significant level of 0.05 is 1.64
P- value = 0.244
c> If the true population mean is 101.3 ;
Then:
z = 0.808
From the normal z tables
P value = 0.2096
Answer:
$21 - 6 months
$42 - 12 months
Step-by-step explanation:
Multiply $3.50 times 6 (for 6 months) and by 12 (for 12 months).
Answer:
51 × 5 = L
L = $255
Step-by-step explanation:
First, we can have "L" equal the amount of money Lee saved.
L = amount of money Lee saved
If Jessi saved 5 times as much, <u>you can find out how much money Lee saved by multiplying how much Jessi has by 5</u>.
Jessi has $51, so the equation would be <u>51 × 5 = L</u>
51 × 5 = 255
So, Lee has $255 saved.
Answers:
A, B, C, E.
Everything except D and F.
