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Anvisha [2.4K]
4 years ago
10

3x + 9y = -42 -3x + 2y = -2 The solution to the system is

Mathematics
1 answer:
AlladinOne [14]4 years ago
6 0

x=−2 and y=−4

If you need explanation Just ask!

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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
4 years ago
Note: Enter your answer and show all the steps that you use to solve this problem in the space provided. Simplify the expression
Inessa [10]

Answer:

-4.5

Step-by-step explanation:

6 0
3 years ago
What is the slope-intercept equation for the line below 
jek_recluse [69]

Step-by-step explanation:

slope/gradient

1 - (-4) / 4 - 0 = 5/4

y-intercept is -4 (this is the dot on y)

so the line equation is

y = 5/4x - 4 answer d

6 0
3 years ago
Please help, ill mark brainliest = )
ArbitrLikvidat [17]
The answer is 1.6lb is the greatest 2nd is 30oz and last is 800g
6 0
3 years ago
Which expression is equivalent to 3(m - 3) + 4?
prisoha [69]

Answer:

3m -5

Step-by-step explanation:

3(m - 3) + 4

Distribute

3m -9 +4

Combine like terms

3m -5

8 0
3 years ago
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