<em>So</em><em> </em><em>the</em><em> </em><em>right</em><em> </em><em>answer</em><em> </em><em>is</em><em> </em><em>9</em><em>2</em><em>.</em>
<em>Look</em><em> </em><em>at</em><em> </em><em>the</em><em> </em><em>attached</em><em> </em><em>picture</em><em> </em><em>⤴</em>
<em>Hope</em><em> </em><em>it</em><em> </em><em>will</em><em> </em><em>help</em><em> </em><em>u</em><em> </em><em>.</em><em>.</em>
Answer:
B
Step-by-step explanation:
subtract 4 from 9 to get 5 and then since both fractions have 12 on bottom, you can subtract 3 form 7 to get 4
since 4*3 is 12, you can factor 12 to become 3 and 4 becomes 1
Six and a half hours at a speed of 45 mph. 45 mph is forty five miles per hour. since there are six full hours, multiply six (time) by speed (45) to get the distance within the six full hours, which is 270 miles. you also have an additional half hour at a 45 mph speed, so rather than going 45 miles in one hour, you for half an hour, meaning you go 22.5 miles. add these two together (270 + 22.5) to get 292.5 miles. a faster way to get to this would be to multiply 6.5 * 45. hole this helps!
Answer:
24
Step-by-step explanation:
Mack can choose any of the 4 for the first visit, any of the remaining 3 for the second visit, either of the remaining 2 for the third visit, then visit the last one. There are 4·3·2·1 = 24 ways Mack can do this.
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The number 4·3·2·1 is "four factorial", written as 4! (with an exclamation point). It is the number of ways 4 objects can be ordered, called the number of <em>permutations</em> of 4 objects.
Answer:
a) t = 2.2010
b) t = 1.7291
c) t = 3.4995.
Step-by-step explanation:
a. The sample size is 12 and the level of confidence is 95%.
12 - 1 = 11 degrees of freedom, either two-tailed test at or one-tailed test at , so t = 2.2010.
b. The sample size is 20 and the level of confidence is 90%.
20 - 1 = 19 degrees of freedom, either two-tailed test at or one-tailed test at , so t = 1.7291.
c. The sample size is 8 and the level of confidence is 99%.
8 - 1 = 7 degrees of freedom, either two-tailed test at or one-tailed test at , so t = 3.4995.