Answer:
x=1
Step-by-step explanation:
By factoring, you'll compress the equation to (x-1)^2=0
Next take out the square: x-1=0
Now subtract one to the other side to get x! x=1
Hope this helps! :)
An equivalent expression is
40 + 8n - 24
simplified:
16 + 8n
hope this helps!
Answer:
41.2
miles
Explanation:
To solve the question, first find the number of miles Rachel power walked.
She walked
2
3
5
or
2.6
miles a day for seven days. Multiply seven days by
2.6
to find the total number of miles Rachel power walked that week.
2.6
⋅
7
=
18.2
Next, find the number of miles Rachel jogged.
She jogged
5.75
miles a day for four days. Multiply
4
by
5.75
to find the number of miles Rachel jogged that week.
5.75
⋅
4
=
23
Rachel power walked 18.2 miles and jogged 23 miles. Add the two values up to find the total number of miles that she power walked and jogged.
18.2
+
23
=
41.2
Step-by-step explanation:
hope this helps if not sorry
Answer:
The standard deviation is 11 points
Step-by-step explanation:
To calculated the z-score of a value x, we use the following equation:

Where m is the mean, s is the standard deviation and z is the z-score.
If we solve this equation for s, we get:

So, replacing z by 2, m by 153 and x by 175, we get:

Therefore, the standard deviation is 11 points