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zavuch27 [327]
3 years ago
10

What are the values of c makes x^2 + 6x + c a perfect square trinomial? 3 6 9 12

Mathematics
1 answer:
alex41 [277]3 years ago
6 0

Answer:

<h2>c = 9</h2>

Step-by-step explanation:

(a+b)^2=a^2+2ab+b^2\\\\\text{We have}\ x^2+6x+c=x^2+2(x)(3)+c\\\\\text{Therefore}\ c=3^2=9\\\\x^2+2(x)(3)+3^2=(x+3)^2

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3(c+5)=12. Distributive property
avanturin [10]

Answer:

c = -1

Step-by-step explanation:

3(c+5)=12

3 × c = 3c

3 × 5 = 15

3c + 15 = 12

<u>      - 15   -15</u>

   3c = -3

c = -3 ÷ 3 = -1

Check:

3(-1+5)=12

-3 + 15 = 12

6 0
3 years ago
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Evaluate the expression -2+49 ÷ (-7)​
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Step-by-step explanation:

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3 years ago
-5(m+4)-10(8-5m) which’s is this
Darina [25.2K]
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3 years ago
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A square desk can seat four people, one on each side. If you push two desks together, you can fit six people. Three desks pushed
weeeeeb [17]

Answer:

Option c. 104 people

Step-by-step explanation:

For 1 desk : 4 people

For 2 desks: 6 people

For 3 desks: 8 people

<em>For 51 desks: </em>

<em>We can see the pattern in the number of people that can be seated on the tables. </em>

Using arithmetic series: 4,6,8,....

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a(51) = 4 + (51 - 1) 2

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3 0
3 years ago
Help me with my aleks its due June 30th
Alex

Answer:

5 divided by 2 = 2.5         2.5 is the answer because you split the bigger number in half and in order to do that you need to divide by 2.

Step-by-step explanation:

                                   Hope this helps you!!!!!!!!!! :) :) :) :) :)

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3 years ago
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