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3 years ago

12

Hey can you please help me posted i picture of question

2 answers:

Harrizon [31]3 years ago

5 0

The sum to this polynomial is the first answer choice "A"<span />

Tamiku [17]3 years ago

3 0

For this case we have the following polynomials:
16x ^ 2 - 16
-12x ^ 2 - 12x + 12
Adding we have:
(16x ^ 2 - 16) + (-12x ^ 2 - 12x + 12)
We group in similar terms:
x ^ 2 (16-12) + x (-12) + (-16 + 12)
Rewriting we have:
4x ^ 2 - 12x - 4
Answer:
4x ^ 2 - 12x - 4
option A

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If w varies inversely with the square root of t and w = 5 when t = 49,

VARVARA [1.3K]

Answer:

x=k/y

w=k/t

5=k/√49

5=k/7

k=5×7

k=35

5 0

3 years ago

A 90 percent confidence interval for the slope of a regression line is determined to be (-0.181, 1.529). Which of the following

GenaCL600 [577]

Answer: a. The correlation coefficient of the data is positive.

Step-by-step explanation:

Estimated slope of sample regression line = $\dfrac{Upper \ limit + lower\ limit}{2}$

Here , confidence interval : (-0.181, 1.529)

Estimated slope of sample regression line = $\dfrac{-0.181+1.529}{2}$

$=\dfrac{1.348}{2}\\\\=0.674\ \ \ \ [\text{ positive}]$

⇒Correlation coefficient(r) must be positive, So a. is true.

But, d. and e. are wrong(0.674 ≠ 0 or 1.348).

We cannot check residuals or its sum from confidence interval of slope of a regression line, so b is wrong.

We cannot say that scatterplot is linear as we cannot determine it from interval, so c. is wrong

So, the correct option : a. The correlation coefficient of the data is positive.

7 0

3 years ago

7,000 is 100 times what number ?

anzhelika [568]

Answer:

70

Step-by-step explanation:

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3 years ago

(-9,-2) (-5,0)<br> What’s the slope

serious [3.7K]

Answer:

0.5 or 1/2

Step-by-step explanation: Use the slope formula: y2 - y1 / x2 - x1

0 - (-2) / -5 - (-9)

2 / 4

= 0.5 or 1/2

6 0

3 years ago

Read 2 more answers

Suppose a spherical balloon grows in such a way that after t seconds, its volume is V = 4 sqrt(t) cm3.

chubhunter [2.5K]

The volume at time <span>t = 25 seconds
since </span><span> V = 4 sqrt(t) cm3,
V(5)= 4*</span><span>sqrt(25)cm^3=4*5=20cm^3</span>

3 0

3 years ago