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Eva8 [605]
3 years ago
5

A physics test is normally distributed. The class average was 79.3, and the standard deviation was 7.5. What percent of students

scored between a 68 and 86.8?
Mathematics
1 answer:
Bezzdna [24]3 years ago
5 0

Answer:97.275% or 97.5%

Step-by-step explanation:

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Graycie and her 6 friends are using 293 beads to make bracelets. They share the beads evenly but some were left over. How many b
FrozenT [24]

Answer:

47

Step-by-step explanation:

3 0
3 years ago
Describe the transformations of the given function:<br><br> f(x)=−14|x−2|+5
statuscvo [17]

Answer:

im busy so i cant right now

Step-by-step explanation:

7 0
3 years ago
Find the equation of a line through B(5,2) which is perpendicular to the line 3x+5=0. Hence find the coordinate of the foot of t
Oduvanchick [21]

Answer:

y=2, the equation of  a line which is perpendicular to the line 3x+5=0

A(-5/3,2)  the  foot of the perpendicular from B to the line

Step-by-step explanation:

d1 : 3x+5=0, so 3x=-5, x=-5/3

y=2, the equation of  a line which is perpendicular to the line 3x+5=0

A(-5/3,2)  the  foot of the perpendicular from B to the line

3 0
3 years ago
How much money would I need to invest for six years at 4 1/2 percent Simple interest to earn $400?​
lbvjy [14]

Answer: 1481.48

Step-by-step explanation:

SI = prt

400 = p x 0.045 x 6

400 = 0.27p

P = 400 / 0.27

P = 1481.48

6 0
3 years ago
How to do this question
blsea [12.9K]
This is a 3 step problem. First you ignore the hole in the middle and find the volume anyways. Then you find the volume of the empty middle part. Then you can find the volume of the actual shape by subtracting them. 
area of a circle is= pi r^2
Volume with hole: 5*5*pi*8=200pi
Volume of hole= 1.5*1.5*pi*8= 18pi
Volume of doughnut = 200pi-18pi=182pi=571.769863u^3

r is the radius which is half of the diameter. 
pi is a big number but you can use 3.14
the formula for finding the volume is area of base times height. That's why i multiplied it by 8.]

I hope this helps
8 0
3 years ago
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