Answer:
<h2>8</h2>
Step-by-step explanation:
Divide 11 1/3 by 1 5/12 to find out the rough amount of days she practiced.
11.3333/1.41667 = 7.9999 or about 8
PLEASE MARK BRAINLIEST!
Answer:
112 if you don't include the triangle sides as they are not necessary, but 124 if you include one triangle and 136 if you include both triangle sides
21 and 21
(it's a square)
and yes, a square is a rectangle
Answer: Test statistic = -8 and rejected region is (-∞,-1.966) and (1.966, ∞)
Step-by-step explanation:
Since we have given that
X is the length of a rod.
Sample Mean = 2 inches
Standard deviation = 0.5 inches
n = 400
Hypothesis are

Test statistics would be

Degrees of freedom = n-1 =400-1 =39
and 
Using the t-distribution table, we get that critical value z = 1.966
Since the two tail test will be applied to this,
So, the acceptance region will be (-1.966, 1.966)
Hence, the rejected region will be (-∞,-1.966) and (1.966, ∞)
Well he says he needs 16 inches of tubing for each washing machine and he is trying to install 18 washing machines.
sooo all we have to do is multiply 16 times 18
lets do the math:)
16 x 18 = 288
whats your answer? well its 288 inches of tubing
have a good one:)
merry christmas:D