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bezimeni [28]
3 years ago
7

Dimitri is solving the equation x^2 – 10x = 21. Which value must be added to both sides of the equation to make the left side a

perfect-square trinomial?
a. 0
b. 4
c. 25
d. 100
Mathematics
2 answers:
Salsk061 [2.6K]3 years ago
3 0
We are given the expression x 2 - 10x = 21  where a number is to be added in both sides to complete the equation by completing the square. In this case, (-10/2)^2 is equal to 25. The number that is added in the left side of the equation is equal then to 25. 
andrew-mc [135]3 years ago
3 0

Answer:

The answer is C. 25

Step-by-step explanation:

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WILL GIVE BRAINLIEST <br> Which of the following represents a function
iris [78.8K]

Answer:

C

Step-by-step explanation:

The table has 2 inputs that are the same (-1) but have different outputs (7 and 1). The list of coordinates also has 2 points with the same x - axis but different y values. For the graph you could use the vertical line test. If you put the line on -1 on the x-axis is goes through 2 points. The indicates that it is not a function.

Hope this helsp. Pls give brainliest.

8 0
3 years ago
Pls help .,)
Nat2105 [25]

C.

because a, b, and d aren't porportional

but c x is divided by 2

6 0
3 years ago
Read 2 more answers
a circus charges $2.50 for kids tickets and $6 for adult tickets last week and twice as many kids attended the circus than adult
aliina [53]
Let
x-----------> the number of kids
y----------> the number of adults

we know that
2.5x+6y=$7150---------> equation 1
x=2y-------------> equation 2
substitute 2 in 1
2.5*[2y]+6y=7150-----> 5y+6y=7150----> 11y=7150-----> y=650
x=2y----> x=2*650----> 1300

the answer is
the number of kids is 1300
5 0
3 years ago
Determine the area of the polygon below.
sveta [45]
The area of the polygon is 610
3 0
3 years ago
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Jaclyn has $120 saved and earns $40 each month in allowance. Pedro has $180 saved and earns $20 a month in allowance. If they bo
stich3 [128]
First, let's make an equation as to how to find how much money they have altogether:

(M stands for the # of month)

Jaclyn: 120 + 40m 
Pedro: 180 + 20m

So let's plug-in 1 for m (1 will stand for 1 month)

Jaclyn: 120 + 40 * 1 = 160
Pedro: 180 + 20 * 1 = 200

I made a table depicting how much they'll make for the next 5 months (attached below). According to that, on month 3, they will have made the same amount of money (or $240).

So they will have the same amount of money in 3 months. Hope this helps! :)

6 0
3 years ago
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