Answer:
£0.33
Step-by-step explanation:
Rhianna has £25.
1 plant costs £3.95, she buys all of them.
25/3.95 = 6.329114
She buys a total of 6 plants.
With £0.33 remaining, which is the change.
Hello from MrBillDoesMath!
Answer:
Top line: y = (2/3)x + 2
Bottom line: y = (2/3)x -1
Discussion:
The graph provided is hard to read but I did the best I could.
The top line appears to pass through the points (0,2) and (-3,0)
For this line
m = change y /change x = (0-2)/(-3-0) = -2/-3 = +2/3. So
y = mx + b => y = (2/3) x+ b. As the line passes through (0,2) set x = 0, y= 2 in y = (2/3)x + b =>
2 = (2/3) 0 + b => b = 2
Therefore y = (2/3)x + 2
The bottom line appears to pass through the points (0,-1) and (3,1)
For this line
m = change y /change x = (1-(-1)) /(3-0) = +2/-3. So
y = mx + b => y = (2/3) x+ b. As the line passes through (0,-1) set x = 0, y= -1 in y = (2/3)x + b =>
-1 = (2/3) 0 + b => b = -1
Therefore y = (2/3)x + -1
Thank you,
MrB
Answer:
6%
Step-by-step explanation:
$156/5 years = $31.20 per year
$31.20/$520 = .06
.06 x 100 = 6%
Answer:
The test statistic is t = 3.36.
Step-by-step explanation:
You're testing the claim that the mean difference is greater than 0.7.
At the null hypothesis, we test if the mean difference is of 0.7 or less, that is:
At the alternate hypothesis, we test if the mean difference is greater than 0.7, that is:
The test statistic is:
In which X is the sample mean, 
is the value tested at the null hypothesis, s is the standard deviation of the sample and n is the size of the sample.
0.7 is tested at the null hypothesis:
This means that 
A survey of 35 people was conducted to compare their self-reported height to their actual height.
This means that 
From the sample, the mean difference was 0.95, with a standard deviation of 0.44.
This means that 
Calculate the test statistic
The test statistic is t = 3.36.
Answer:
B is the only one that goes through the axis
