Answer:
x=7
Step-by-step explanation:
35÷5=7 :)))
Answer:
The answer is 35.
Step-by-step explanation:
1 and 1/4 hours total. 2/3 was performed before lunch. You need to find how long he practiced after lunch. So first you need to find a common denominator (CD) because the denominators aren't the same. When you find the CD for 1 and 1/4 you need to make it an improper fraction (IF) because it's a mixed number. When you do that you get 5 multiplied by 3 and then 4 multiplied by 3 doing this is helping you find the CD of 5/4 which happens to equal 15/12. Next you do the same for 2/3 but this time you multiply 2 by 4 and then 3 by 4 and in this case 2/3 now equals 8/12. Now you can work with finding how much Allen performed after lunch. To find this you need to subtract 15/12-8/12 to find how long he performed after lunch when you do that you get 7/12 hours which is equal to 35 minutes.
Here, first we need to calculate the slope of the line,
Here, Coordinates = (4, 6) (-1, -4)
m = y2 - y1 / x2-x1
m = 6 + 4 / 4 + 1
m = 10/5
m = 2
Now, Take first coordinate: y - 6 = 2 (x - 4)
Second coordinate: y + 4 = 2 (x + 1)
In short, Your Answers would be Option B & D
Hope this helps!
Answer:
Step-by-step explanation:
The standard deviation of the data set is D. ABOUT 13.4
14, 34, 23, 50, 25, 16, 48
Arrange in ascending order: 14, 16, 23, 25, 34, 48, 50
mean = (14 + 16 + 23 + 25 + 34 + 48 + 50) / 7 = 210/7 = 30
|14 - 30| = 16 ⇒ 16² = 256
|16 - 30| = 14 ⇒ 14² = 196
|23 - 30| = 7 ⇒ 7² = 49
|25 - 30| = 5 ⇒ 5² = 25
|34 - 30| = 4 ⇒ 4² = 16
|48 - 30| = 18 ⇒ 18² = 324
|50 - 30| = 20 ⇒ 20² = 400
(256 + 196 + 49 + 25 + 16 + 324 + 400) / 7 = 1,266/7 = 180.85 variance
√180.85 = 13.45 standard deviation.
