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Zigmanuir [339]
2 years ago
13

The following dot plots describe the test scores on Mr. Santos final exam.

Mathematics
1 answer:
Tasya [4]2 years ago
5 0

second-period class average:

55+70+450+480+170+270+95 = 1590

1590/20 = 79.5

sixth-period class average:

65+225+480+595+270+190 = 1825

1825/20 = 91.25

on average, students in the sixth period class scored higher

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Leona spent $22.95 at the mall. She bought a T-shirt and a book. The book $12.25. How much did the T-shirt cost?
dimaraw [331]

A) Let x = cost of t-shirt:

x= 22.95-12.25

B) x = 22.95 -12.25 = 10.70

C) the t-shirt cost $10.70


4 0
3 years ago
Which expression could be modeled by decimal grid?
faust18 [17]

Answer:

D) 0.80×0.40 so the answer is D

7 0
3 years ago
The mpg (miles per gallon for a certain compact car is normally distributed with a mean of 31 and a standard deviation of 0.8. w
lesantik [10]
For this Q:

mean=31
st.dev.=0.8
x=32

Calculate z-score:
z=(x-m)/s = (32-31)/0.8=1.25

This z-score value corresponding to the probability of 0.8944

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6 0
2 years ago
What is the slope and y intercept of the linear equation y=5x-4
Wittaler [7]
The slope is 5
the y intercept is -4

slope intercept form is: y=mx+b

M is always the slope, b is the y intercept.

Hope I helped!
3 0
3 years ago
Can someone help me with 10 math questions (:
olga2289 [7]
So volue of a cone=1/3 times (area of base[which is a circle]) times height

area of base=area of circle=pi time radius^2
area=pi times 5^2
area=pi times 25=25pi

1/3 times 25pi times 18
25pi times 18 times 1/3
25pi times 18/3
25pi times 6=150pi


the answer is 150π in^3 or 150π cubic inches or C

( to solve, aprox pi to 3.141592 an multiply 150 by 3.141592=471.239 in^3)
3 0
3 years ago
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