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alexira [117]
3 years ago
15

What is the simplified expression for

Mathematics
1 answer:
Anni [7]3 years ago
4 0

Answer:

<h2>a) - a² + 5ab + 8</h2>

Step-by-step explanation:

3a^2+9ab+5-4a^2-4ab+3\qquad\text{combine like terms}\\\\=(3a^2-4a^2)+(9ab-4ab)+(5+3)\\\\=-a^2+5ab+8

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A standard roulette wheel with slots labeled 0, 00, 1, 2, 3, … , 36 is spun 60 times. Of these spins, the number 7 is spun 7 tim
WARRIOR [948]

Since the p-value of the test is of 0.00001 < 0.01, these results have statistical significance.

<h3>What is the relation between the p-value and the conclusion of the test hypothesis?</h3>

Depends on if the p-value is less or more than the significance level:

  • If it is more, the null hypothesis is not rejected, which means that the results do not have statistical significance.
  • If it is less, it is rejected, which means that the results have statistical significance.

In this problem, the probability is the p-value, hence since the p-value of the test is of 0.00001 < 0.01, these results have statistical significance.

More can be learned about p-values at brainly.com/question/13873630

#SPJ1

6 0
1 year ago
Guys please help me
poizon [28]
<h3>Answer:   -4</h3>

==========================================================

Explanation:

We can pick any two rows from the table to get the (x,y) points needed to find the slope.

Let's say we pick the second and third rows

Subtract the y values: 14-6 = 8

Subtract the x values in the same order: 1-3 = -2

Divide the differences: 8/(-2) = -4

The slope is -4

--------------------------------------------------

You can use the slope formula

Let's say the points are (x1,y1) = (1,14) and (3,6)

m = (y2-y1)/(x2-x1)

m = (6-14)/(3-1)

m = -8/2

m = -4

It's the same basic idea as the previous section. You subtract the y values together (y2-y1) and the x values together (x2-x1) and divide the differences to get m. The order of subtraction doesn't matter as long as you stay consistent. If you do something like y2-y1 and x1-x2, then you'll get the wrong slope value.

3 0
2 years ago
What is 4/5 divided by 8
gladu [14]
(4/5) / 8....when ur dividing with fractions, flip what u r dividing by, then multiply

4/5 * 1/8 = 4/40 reduces to 1/10 <=
6 0
2 years ago
John's bedroom is shaped like a rectangle. The dimensions of the room are 10 feet by 14 feet. What is the best estimate of the l
natali 33 [55]

Answer:

c

Step-by-step explanation:

4 0
3 years ago
Gym A charges $9.00 per hour of childcare. Gym B charges $0.75 per 5 minutes of childcare.
TEA [102]

Answer:

$9.00

Step-by-step explanation:

0.75 times 12 equals 9

3 0
3 years ago
Read 2 more answers
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