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2 years ago

Find the value of c that makes each trinomial a perfect square. x² + 3x+c

Mathematics

2 answers:

WINSTONCH [101]2 years ago

8 0

Answer:

Step-by-step explanation:

balu736 [363]2 years ago

3 0

Answer:

Step-by-step explanation:

Plug in 2 for c in the equation:

x² + 3x + 2

x 2

x 1

(x + 2)(x + 1)

Check. Use the FOIL method:

(x)(x) = x²

(x)(1) = x

(2)(x) = 2x

(2)(1) = 2

x² + x + 2x + 2

Combine like terms:

x² + (x + 2x) + 2

x² + (3x) + 2

2 can be a answer for c.

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There are some students playing soccer. Five students decided to join the game and now there are twenty-two students playing soc

ella [17]

Answer:

17 students

Step-by-step explanation:

Given:

There are some students playing soccer.

Five students decided to join the game and now there are twenty-two students playing soccer.

Question asked:

How many students were originally playing soccer?

Solution:

Let initially number of students playing soccer = $x$

As given,

<u>After joining 5 more students, there are 22 students playing soccer, the equation will be:-</u>

$x+5=22$

Subtracting both side by 5

$x+5-5=22-5\\x=17\ students$

Hence, 17 students were originally playing soccer.

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3 years ago

According Two data from the 2010 United States Census 83.7% of Americans lived in the metropolitan area suppose maria researcher

Murrr4er [49]

Answer:

Mean is 83.7%

And, the standard deviation is 0.033

Step-by-step explanation:

The computation of the mean and the standard deviation is as follows:

Let us assume the P be the sample proportion

Mean is 83.7%

And, the standard deviation is

$= \sqrt{\frac{p(1-p)}{n} } \\\\=\sqrt{\frac{0.837(1-0.837)}{125} }$

= 0.033

8 0

2 years ago

REALLY STRUGGLING PLS HELP <br> giving brainliest

Alex17521 [72]

Answer:

first option is the correct answer

Step-by-step explanation:

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2 years ago

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This table shows values that represent an exponential function. What is the average rate of change for this function for the int

Pepsi [2]

Answer:

$\boxed{12}$

Step-by-step explanation:

When x = 3, y = 13

When x = 5, y = 37

Subtract both y-values to find the change:

37 - 13 = 24

Average of the change:

$\frac{24}{2}$ = 12

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3 years ago

Lisa bought four candles. The candles cost $7.00, $8.00, $19.00, and $13.00. If she only had $50 to spend and wants to buy a fif

gizmo_the_mogwai [7]

Answer:

Step-by-step explanation:

I added all of then and then subtracted 47 from the 50.

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2 years ago

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