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earnstyle [38]
3 years ago
6

If the equation x² - kx - 36 = 0 has x = 12 as one root, what is the value of k?

Mathematics
1 answer:
sergiy2304 [10]3 years ago
5 0
To solve for k, just plug in the x provided:

12^2 - k(12) - 36 = 0

144 - k(12) = 36

-k(12) = 1/4

k = -1/48
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Angela took a general aptitude test and scored in the 83rd percentile for aptitude in accounting.
tigry1 [53]

Answer:

(a) 83% of the scores were at or below her score.

(b) 17% was above her score.

Step-by-step explanation:

Given that:

Percentile score of Angela in the general aptitude test = 83rd percentile

To find:

a) Percentage of scores which were at or below her score?

b) Percentage of score which were above her score?

Solution:

First of all, let us learn about the term "<em>Percentile</em>"

Percentile is the value below which the certain percent of people/marks fall.

Therefore, when we say percentile of someone's score is x, then there are x\% of scores are at the same level or below.

And (100-x)\% of the scores are above this level.

Therefore, we can say that:

83% of the scores were at the same level or below the score of Angela.

And (100-83)\% = 17\% of the scores were above the score of Angela.

7 0
2 years ago
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Step-by-step explanation:

5 0
2 years ago
X+3y=6 graph in linear equation
kotykmax [81]
If you want to put this in slope intercept form, you need to get y alone. To do this, you first need to subtract x from both sides. Then, divide both sides by 3. Your work should look like this:

x + 3y = 6        ( - x both sides)

3y = -x + 6       (Divide both sides by 3)

y = - 1/3 x + 2

***** This is your new equation. This is easier to graph because it gives the slope and the y intercept. *******************************************************


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melisa1 [442]

Answer:The top one on the right.

Step-by-step explanation:

4 0
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marishachu [46]

Answer:

a. q= -p - 3

Step-by-step explanation:

8q+ 4p + 4= 4q - 8

8q (- 8q) + 4p + 4 = 4q (-8q) -8

4p +4 = -4q -8

4p + 4 (+8) = -4q -8 (+8)

4p + 12 = -4q

(4p + 12)/-4 = (-4q)/-4

-p -3 = q

4 0
3 years ago
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