Answer:9+10 is 19
1+1 is 2
2+2=4
9 * 9 is 81
12 * 12= 144
last one not sure
Step-by-step explanation:
Answer:
-4.42
Step-by-step explanation:
Given the following :
Population mean (pm) = 8 hours
Sample mean (sm) = 6.9 hours
Number of observations (n) = 101 students
Sample standard deviation (sd) = 2.5
Using the t-statistic formula :
[(sm - pm) / (sd/√n)]
Hence,
[(6.9 - 8) / (2.5/√101)]
[(-1.1) / (2.5/10.05)]
-1.1 / 0.2487562
= −4.422
The test statistic = - 4.42 to the nearest hundredth.
Answer:
yes all are right
Step-by-step explanation:
<h3><u>Question:</u></h3>
Isabella’s rain gauge showed 3 4/5 centimeters (cm) last Tuesday. This Tuesday, the rain gauge showed 5 7/10 centimeters. How many more centimeters of rain fell during the week?
A 9 1/2cm B 8 1/2cm c 2 4/5cm D 1 9/10 cm
<h3><u>Answer:</u></h3>
Option D
more centimeters of rain fell during this week than last week
<h3><u>Solution:</u></h3>
From given,

Also given that,

<em><u>How many more centimeters of rain fell during the week?</u></em>

Thus
more centimeters of rain fell during this week than last week