All categories

3 years ago

What is the correct classification of 7x^2+9x+4

1 answer:

3 0

Trinomial: 3 term polynomial 
examples: 
2x^5 − 3x^2 + 5 

Answer: Trinomial

You might be interested in

Phân tích nhân thức sau thành phân tử: x³+2x²+x

soldier1979 [14.2K]

The answer is go to sleep

6 0

3 years ago

There are two numbers whose sum is 496 . One number is thrice the other . what are the numbers?

alexdok [17]

X + 3x = 496
x = 496/4
X = 124

Another Number equal to 496-124 equal to 372

5 0

3 years ago

PLZ HELPDONT TROLL IM NICE

marysya [2.9K]

Answer:

0.25y +7y

Step-by-step explanation:

REMEMBER DISTRIBUTION

7 0

3 years ago

Select the coordinates of two points on the line y = 8.

shusha [124]

Answer:

D: (0, 8) and (8, 8)

Step-by-step explanation:

Line y = 8. So doesn't matter what x values are, y is always equal 8

Answer

D: (0, 8) and (8, 8)

8 0

4 years ago

Researchers measured the bone mineral desnsity of the spines of 94 women who had taken teh drug CEE. The mean was 1.016 g/cm2, a

Valentin [98]

Answer:

The 95% confidence interval for the mean is between 0.985g/cm² and 1.047 g/cm².

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.025 = 0.975$ , so $z = 1.96$

Now, find M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

$M = 1.96*\frac{0.155}{\sqrt{94}} = 0.0310$

The lower end of the interval is the mean subtracted by M. So it is 1.016 - 0.0310 = 0.985 g/cm²

The upper end of the interval is the mean added to M. So it is 1.016 + 0.0310 = 1.047 g/cm²

The 95% confidence interval for the mean is between 0.985g/cm² and 1.047 g/cm².

6 0

3 years ago