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belka [17]
4 years ago
9

X squared plus 10x plus 9 equals 0

Mathematics
1 answer:
snow_lady [41]4 years ago
4 0
That is a quadratic equation. To find its square, think of two numbers that when multiplied, the answer would be the last term, constant 9 and if those two numbers are added, the answer would be the middle term, the constant 10 with variable x. These are positive integers 9 and 1, respectively.

(x² + 10 x + 9) = 0
= (x + 9 ) (x + 1)

Using the FOIL method to check, the square is equal to the quadratic equation.
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A friend of yours, a senior, took the Graduate Record Exam in September and scored in the 99th percentile. InFebruary, your frie
Alecsey [184]

Answer:

"differential selection"

Step-by-step explanation:

If your friend took the test twice and passed both times with a score above 90% then the minor difference in price is most likely due to "differential selection". The first test had  questions that he had a little more experience in solving, while the second time he was most likely given a couple questions that he wasn't as prepared for as he was the first time. This is most likely the cause for the difference in percentiles.

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

3 0
3 years ago
Y intercept and slope of y= 5/2
olga2289 [7]

Answer:

y intercept at 5/2. Slope is 0

Step-by-step explanation:

The equation for a line can be represented by the formula y=mx+b. M is the slope or rate of change and b is the y intercept. Since the equation y=5/2 does not have an x in it the slope is 0 and you have a perfectly straight horizontal line. Since we are just left with 5/2 that is our y intercept.

In other words, no matter what value you plug in for x, y will always be 5/2.

4 0
3 years ago
Mr. and Mrs. Garcia took their three children to see a matinee on Saturday . They spent a total of $55.50,1 which included $29.2
zmey [24]
N= number of tickets purchased= 5 people went to the movies
t= cost of each ticket

$55.50 - $29.25= n * t
$55.50 - $29.25= 5t
OR
$55.50= 5t + $29.25

ANSWER: $55.50 - $29.25= 5t OR
$55.50= 5t + $29.25 (there were no equations to choose from, but it should look something like one of these).

Hope this helps! :)
7 0
3 years ago
9 stores is 3% of how many stores?
hichkok12 [17]
Hello there! We can solve this question by writing and solving a proportion. Set it up like this:

9/x = 3/100.

This is because 9 is 3% of x number of stores and percents are parts of 100. Setting it up like this will help us get the correct answer. Cross multiply the values . 9 * 100 is 900 and 3 * x = 3x. You get 900 = 3x. Now, divide each side by 3 to isolate the x. 3x/3 cancels out the x. 900/3 is 300. There. x = 300. 9 stores is 3% of 300 stores.
3 0
4 years ago
Read 2 more answers
I am in pre-algebra and i need help answering a question for homework..
Elenna [48]

the answer is x is equal to -4

x=-4

3 0
4 years ago
Read 2 more answers
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