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Burka [1]
3 years ago
14

I need help in 2 3 4 5 6 7 8

Mathematics
1 answer:
ahrayia [7]3 years ago
7 0
Yo i can't see wut it says
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The heights (in cm) and arm spans (in cm) of 31 students were measured. The association between (height) and (arm span) is shown
sergeinik [125]

Answer: Mike's arm span is 7.165 cm longer than the George's one.

Step-by-step explanation:

We have that the association between height and arm span is modeled by the equation

y = 4.5 + 0.977*x

where y is height and x is arm span.

Mike is 172 cm tall, so his arm span is:

172cm = 4.5 + 0.977*x

x = (172 - 4.5)/0.977 = 171.443 cm

and George is 165 cm tall, so his arm span is:

x = (165 - 4.5)/0.977 = 164.278 cm

Then the difference between their arm span is:

171.443cm - 164.278cm = 7.165 cm

So Mike's arm span is 7.165 cm longer than the George's one.

6 0
3 years ago
What is the Z-score for Paula if she got 1400 on the SAT, the mean was 1100 and the standard deviation was 275? step by step how
Setler [38]

mu = 1100 = population mean

sigma = 275 = population standard deviation

x = 1400 = raw score

z = z score

z = (x-mu)/sigma

z = (1400-1100)/(275)

z = 300/275

z = 1.0909090909091 approximately

z = 1.09

Convention is to round to two decimal places so that you can use a Z table to look up the area under the curve (which helps determine probability).

The positive z score is due to Paula's raw score being above the mean.

7 0
3 years ago
Marco is carrying two cylinder-shaped cans. Each can has the same height
Dafna11 [192]

Answer:

Choice D

Step-by-step explanation:

The Cavalieri's principle states that if two or more solids have identical cross-sectional area as well as height, then the solids will have equal volume.

Therefore, the volumes of the cylinders are the same

8 0
3 years ago
Read 2 more answers
Which is a prime number 21 23 25 27 29
UNO [17]

Answer:

29 :)

it is 29 because 29 falls under all the prime number characteristics

8 0
3 years ago
If a and b are rational numbers and 5 +2 root 3/7+4 root3=a-b root 3;then a and b=
Usimov [2.4K]

Answer:

           \bold{a=5\,,\quad b=-4\frac27}

Step-by-step explanation:

5+\frac{2\sqrt3}7+4\sqrt3=5+\frac27\sqrt3+4\sqrt3=5+4\frac27\sqrt3=5-(-4\frac27)\sqrt3

6 0
3 years ago
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