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docker41 [41]
3 years ago
9

Evaluate 7 + (-4x2) for x = 0

Mathematics
2 answers:
STatiana [176]3 years ago
6 0
<span>7 + (-4x2)
Substitute 0 for x
7 + (-4(0)2)
Multiply 2 by 0
7 + (-4(0))
Multiply -4 by 0
7 + 0
Add
Final Answer: 7</span>
aalyn [17]3 years ago
4 0
7+(-4(0)^2)
7+(-4(0))
7+0
7
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Given:

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Required:

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6 0
4 years ago
"Find the coefficient of determination given that the correlation coefficient = -.39"
nika2105 [10]

Answer:

r = -0.39

And the determination coeffcient is just the correlation coeffcient square and we got:

R = r^2 = (-0.39)^2 =0.1521

And rounded to the nearest tenth thousand would be 0.1521

Step-by-step explanation:

The correlation coefficient is a measure of variability and is given by this formula:

r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}

For this case we have

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And the determination coeffcient is just the correlation coeffcient square and we got:

R = r^2 = (-0.39)^2 =0.1521

And rounded to the nearest tenth thousand would be 0.1521

4 0
3 years ago
Josh wanted to buy a bike but didn't have enough money. Sam Slick said, "I can fix that. Each time you jump that fence, i'll tri
Anna35 [415]
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4 years ago
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Answer:

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7 0
4 years ago
Read 2 more answers
Which of the following is a solution of x^2 - 7x = -5
Oduvanchick [21]

Answer: B) 7 + or - the square root of 29 all over 2

Which of the following is a solution of x^2 - 7x = -5

A) 7 + or - the square root of 69 all over 2

B) 7 + or - the square root of 29 all over 2

C) -7 + or - the square root of 29 all over 2

D) -7 + or - the square root of 69 all over 2

Step-by-step explanation:

I just did the assignment and the correct answer is B) 7 + or - the square root of 29 all over 2! Hope this helps.

Good Luck!!

6 0
3 years ago
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