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Darina [25.2K]
4 years ago
15

Evaluate -2+7+(-4) first answer gets a Brainly

Mathematics
2 answers:
VLD [36.1K]4 years ago
8 0

Answer:

1

Step-by-step explanation:

-2+7=5

5+(-4)=1

Nikolay [14]4 years ago
3 0

Answer: 1

Step-by-step explanation:

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For her birthday party, Kelly invited her friends to a nearby roller-skating rink. The area of the rectangular rink is 1,530 ft2
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Answer:

30ft

Step-by-step explanation:

1530ft2 divided by 51ft.

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To estimate his travel time, joe divides the distance, d, in miles by 5 less than his expected average speed, in miles per hour.
Elis [28]
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Round each addendum to the nearest ten. 478 + 112
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8 0
4 years ago
Tim is investigating the relationship between the number of years since a tree was planted and the height of the tree in feet. H
wolverine [178]

Answer: There is not a good prediction for the height of the tree when it is 100 years old because the prediction given by the trend line produced by the regression calculator probably is not valid that far in the future.

Step-by-step explanation:

Years since tree was planted (x) - - - - height (y)

2 - - - - 17

3 - - - - 25

5 - - - 42

6 - - - - 47

7 - - - 54

9 - - - 69

Using a regression calculator :

The height of tree can be modeled by the equation : ŷ = 7.36X + 3.08

With y being the predicted variable; 7.36 being the slope and 3.08 as the intercept.

X is the independent variable which is used in calculating the value of y.

Predicted height when years since tree was planted(x) = 100

ŷ = 7.36X + 3.08

ŷ = 7.36(100) + 3.08

y = 736 + 3.08

y = 739.08

Forward prediction of 100 years produced by the trendline would probably give an invalid value because the trendline only models a range of 9 years prediction. However, a linear regression equation isn't the best for making prediction that far in into the future.

3 0
4 years ago
Who's ur favorite song artist?
sukhopar [10]
Probably Metallica or Pink Floyd
7 0
3 years ago
Read 2 more answers
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