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hodyreva [135]
3 years ago
5

Solve for x. Simplify completely. x^2-9=55

Mathematics
2 answers:
djverab [1.8K]3 years ago
8 0
★ Exponential reduction ★

x {}^{2}   - 9 = 55 \\ x {}^{2}  = 55 + 9 = 64 \\ x {}^{2}  = 64 = ( + 8) {}^{2}  \\ x =  + 8 \\
we didn't considered -8 because square root of any real number is always positive , or it's yours choice to deal with minus 8 also :)

★✩★✩★✩★✩★✩★✩★✩★✩★✩★✩★
Irina-Kira [14]3 years ago
3 0

Answer:

x= 8 x= -8

Step-by-step explanation:

took the test

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ages would no longer get larger as the mouse hovers over them. The transition would happen over 10s, since this is the default duration.

Step-by-step explanation:

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Choose the correct statement. <br> -2&lt;-3<br> 5&gt;6<br> 4&gt;-4<br> 0&lt;-6
Zigmanuir [339]
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5 0
4 years ago
Do you know has three times as many dimes as quarters the dollar amount of her dimes and quarters is $6.05 how many quarters doe
vesna_86 [32]

The number of quarters she have 11.

<h3>What is a system of equations?</h3>

A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.

Let consider y = quarters; x = dimes

We know that there are 3 times as many dimes as quarters. So we can state that x = 3y.

Then, we say that 25y + 10x = 605

(Value of coin * amount of coins)

Then we substitute x=3y into the equation, yielding:

25y + 10(3y) = 605

25y + 30y = 605

55y = 605

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Therefore, the number of quarters she have 11.

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5 0
2 years ago
Julie, a police officer, has the following work pattern. She works 3 days, has 4 days off, then works 4 days, then has 3 days of
zalisa [80]

Answer:

See below.

Step-by-step explanation:

For each day number, Y means working, and N means off

Day

1   Y

2   Y

3   Y

4   N

5   N

6   N

7   N

8   Y

9   Y

10   Y

11   Y

12   N

13   N

14   N

15   Y

16   Y

17   Y

18   N

19   N

20   N

21   N

22   Y

23   Y

24   Y

25   Y

26   N

27   N

28   N

29   Y

30   Y

31   Y

32   N

33   N

34   N

35   N

36   Y

37   Y

38   Y

39   Y

40   N

41   N

42   N

43   Y

44   Y

45   Y

46   N

a. Today is day 1. 30 days from today is day 31.

She works on day 31, so she does work 30 days from today.

b. 45 days from today is day 46. She is off on day 46, so she will be off 45 days from today.

8 0
3 years ago
Read 2 more answers
Can someone help me?
scoundrel [369]

Answer: its 180

Step-by-step explanation: length times width is the area. 15 times 12 is 180

5 0
3 years ago
Read 2 more answers
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