Answer:
solve it by your self.
Step-by-step explanation:
I'm just playing around so don't mention it okay
First of all, you organize all of the info that you're given. We know that the points are (x, y). Therefore, 8 is x and 5 is y. 5/7 is your m, since m represents the slope.
x = 8
y = 5
m = 5/7
b = y-intercept, which is the missing info
Then, you put it into a multi-step equation.
The slope equation formula is y = mx + b. Now, we solve for the equation.
y = mx + b
5 = 5/7(8) + b (missing info is the y-intercept, so that's why it stays as "b")
5 = 5/7(8/1) + b (any whole number converted into fractions always have a denominator of 1)
5 = 40/7 + b At this point, since 5 as a fraction is 5/1, you need to
-40/7 -40/7 + b multiply the numerator and denominator by 7 so that
_____________ you're able to subtract 40/7 from it. So, 5 x 7 = 35 and
1 x 7 = 7, giving you the fraction of 35/7. 35/7 - 40/7 =
-5/7.
-5/7 = b
Finally, you've got all the info you need to write the equation. As a result, you just substitute the letters with the numbers:
m = 5/7
b = -5/7
y = 5/7x - 5/7
I hope I helped and that you understood my explanations! :)
Answer: ![\bold{\dfrac{h^9}{g^9}}](https://tex.z-dn.net/?f=%5Cbold%7B%5Cdfrac%7Bh%5E9%7D%7Bg%5E9%7D%7D)
<u>Step-by-step explanation:</u>
The power rule is "multiply the exponents".
You must understand that the exponent of both h and g is 1.
Multiply 1 times 9 for both variables.
![\bigg(\dfrac{h}{g}\bigg)^9=\bigg(\dfrac{h^1}{g^1}\bigg)^9=\dfrac{h^{1\times 9}}{g^{1\times 9}}=\large\boxed{\dfrac{h^9}{g^9}}](https://tex.z-dn.net/?f=%5Cbigg%28%5Cdfrac%7Bh%7D%7Bg%7D%5Cbigg%29%5E9%3D%5Cbigg%28%5Cdfrac%7Bh%5E1%7D%7Bg%5E1%7D%5Cbigg%29%5E9%3D%5Cdfrac%7Bh%5E%7B1%5Ctimes%209%7D%7D%7Bg%5E%7B1%5Ctimes%209%7D%7D%3D%5Clarge%5Cboxed%7B%5Cdfrac%7Bh%5E9%7D%7Bg%5E9%7D%7D)
Answer:
Step-by-step explanation:
I sample :
Sample size n1 = 60
Sample average = x bar = 5.2 minutes
STd deviation sample = s1 = 3.1 minutes
II sample:
n2 = 72
y bar = 6.1
s2 = 2.8 minutes
Mean difference = -0.9
Std error for difference = ![\sqrt{\frac{s_1^2}{n_1}+\frac{s_2^2}{n_2} } \\=0.5187](https://tex.z-dn.net/?f=%5Csqrt%7B%5Cfrac%7Bs_1%5E2%7D%7Bn_1%7D%2B%5Cfrac%7Bs_2%5E2%7D%7Bn_2%7D%20%7D%20%5C%5C%3D0.5187)
t statistic = mean diff/se = -1.735
p value = 0.0848
Since p >0.05 we accept null hypothesis that there is no difference between the two averages
Conclusion:
a) We cannot conclude that the mean checkout time is less for people who use the self-service lane
b) NO, we cannot conclude that if everyone used the self-service lane, that the mean checkout time would decrease
Answer:
<u>B. 57.8</u>
Step-by-step explanation:
Changing 46% to a decimal it would be 0.46
125.7 * 0.46 = ?
125.7 * 0.46 = 57.822
57.822 rounds to 57.8 which is answer B.