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steposvetlana [31]
2 years ago
12

Can some PLEASE help me this is my 3rd time asking the same question

Mathematics
1 answer:
S_A_V [24]2 years ago
6 0

Answer:

1/3x^2y

Step-by-step explanation:

It's in the photo, I guess.

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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
Factor: 4x^2-12x+9=0
Andreas93 [3]
Use formula a^2-2ab+b^2=(a-b)^2

4x^2-12x+9
\\(2x)^2-2(2x)(3)+3^2
\\(2x-3)^2
6 0
3 years ago
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Plz help guys, it is a pretty easy sum​
RoseWind [281]

Answer:

a3+13a

Step-by-step explanation:

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7 0
3 years ago
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What is the closest estimate for 179 divided by 9
vazorg [7]
179 / 9 is about 20 
exact = 19.888888
3 0
3 years ago
Simplify: 9(1 - r) + 3r
Butoxors [25]

Answer:

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