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AnnyKZ [126]
3 years ago
8

What value in the place of the question mark makes the polynomial a perfect square trinomial

Mathematics
2 answers:
storchak [24]3 years ago
8 0

Check this attachment

yan [13]3 years ago
5 0

Answer:

9. 225

10. 14

Step-by-step explanation:

9.

Divide the coefficient of x by 2 and square it.

30/2 = 15

15^2 = 225

Answer: 225

10.

When you divide the middle coefficient by 2 and square it, you get the constant term (the third term). Here, the constant term is 49. 49 is the square of 7. Double 7 to get 14.

Answer: 14

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20 POINTS
Mashutka [201]

To find x:

ON is parallel to LM

8x - 8 = 7x + 4

-7x        -7x

1x - 8 = 4

     +8   +8

1x = 12

---    ---

1        1

x = 12

8(12) - 8 = 7(12) + 4

96 - 8 = 84 + 4

88 = 88

------------------------------------

To find y:

NM is parallel to OL

x - 5 = 3y - 6

12 - 5 = 3y - 6

7 = 3y - 6

+6      +6

13 = 3y

---    ---

3      3

13/3 = y

Check:

12 - 5 = 3(13/3) - 6

7 = 13 - 6

7 = 7



6 0
3 years ago
2x+5=17<br><br> please can I have some help x
weqwewe [10]

Answer:

x = 6

Step-by-step explanation:

Using the balancing-equations method, you can solve this problem:

2x + 5 = 17

     - 5   - 5

      ----  ----

      2x = 12

      ----   ----

       2      2

x = 6

7 0
3 years ago
Read 2 more answers
if a mans bbc is 6 inches and another mans bbc is 5 inches how many inches longer is the 1st mans bbc than the 2nd
Pie

Answer: 1inch bigger than the second mans bbc

Step-by-step explanation:

give me brainliest please

6 0
3 years ago
A student skipped a step when she tried to convert 18 hours into seconds and she got the following result:
Kitty [74]

Multiply 18hours by 60 seconds, the answer is 2880 seconds.

6 0
3 years ago
What is the value of z? Plz help
Vera_Pavlovna [14]

Answer: 24

Step-by-step explanation: 58 = 2z - 10

58 - 10 = 48 = 2z

z = 24

6 0
2 years ago
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