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Vesna [10]
3 years ago
13

Evaluate-2+7x^2-2x^3-8x+7x^4 at x=5

Mathematics
1 answer:
Murljashka [212]3 years ago
4 0

Answer:

4262

Step-by-step explanation:

2 + 7x^2- 2x^3-8x +7x^4     at x = 5

= 2 + 7*(5)^2 - 2*(5)^3-8*5 +7*(5)^4

=2+175-250-40+4375

=4552-290

=4262

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DE=2x <br> EF=2x-6<br> DF=3x+5<br> What is DE
Nataly_w [17]

Answer:

DE=2x you kinda put the answer

Step-by-step explanation:

5 0
3 years ago
The diagram shows a right angle.<br> Write an equation to determine the value of x. Solve for x.
kramer

Answer:

8x + (6x + 6) = 90°

x = 6°

Step-by-step explanation:

because it is a right angle, the sum of the angles = 90°

8x + (6x + 6°) = 90°

simplify:

14x + 6° = 90°

subtract 6° from each side:

14x = 84°

divide both sides by 14:

x = 6°

8 0
3 years ago
Read 2 more answers
A local running group collected data on the number of miles its group members run each week, x, and their average mile time, y.
ratelena [41]

Answer:

The correlation coefficient of the data is -0.13, which means as the weekly mileage increases, it has no effect on the average mile time.Step-by-step explanation:

The correlation coefficient of a data set describes how closely related two variables are. Correlation coefficients close to positive 1 show a strong positive correlation, while correlation coefficients close to negative 1 show a strong negative correlation. When a correlation coefficient is close to 0, it shows no correlation between the data.

For the given data set, calculate the correlation coefficient using technology.

This r-value is closer to 0 then it is to -1. Thus, the correlation coefficient of the data is -0.13, which means as the weekly mileage increases, it has no effect on the average mile time.

8 0
3 years ago
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24 points scored in 4 games; 48 points scored in 10 games... are they equivalent?
ch4aika [34]

Hello.

24 points scored in 4 games = 24 * 4.

24 * 4 = 96

48 points scored in 10 games = 48 * 10

48 * 10 = 480

<em>96≠480, they are not equivalent.</em>

5 0
3 years ago
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goblinko [34]
If we solve the left side of the given equation,
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 we get an answer of,
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Since ab = c, we can conclude that b + a is 1. The average of these two numbers is equal to there sum divided by 2. The answer is therefore equal to 0.5. 
4 0
3 years ago
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