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kogti [31]
3 years ago
6

Help I don’t understand the first part but understand the second

Mathematics
2 answers:
grandymaker [24]3 years ago
6 0

Answer:

<u>Complete the square:</u>

  • x² + 2x - 13 = 0
  • x² + 2x + 1  - 14 = 0
  • (x + 1)² - 14 = 0
  • (x + 1)² = 14
  • x + 1 = ± √14
  • x = -1 ± 3.74
  • x =  2.74, x = -4.74
Lunna [17]3 years ago
4 0

Answer:

Step-by-step explanation:

Complete the square

x^{2} + 2x - 13 = 0

x^{2} + 2x        = 13

x^{2} + 2x + 1^{2} = 13 +1 (take 1/2 of the b term , the 2 )

x^{2} + 2x + 1 = 14

(x +1)^2 = 14

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Im stuck, someone help!!!!!!​
Gre4nikov [31]

Answer:

I think its C im not really sure

4 0
3 years ago
3-(-6/7)(3/8) what will it equal?
kompoz [17]
This is equals 3 and 18/56 which reduces to 3 and 9/28 all you have to do is plug it the calculator like it is shown and then you will get this answer
4 0
3 years ago
Solve and show your work for each question a). B). C).
Andreyy89

Answer:

Step-by-step explanation:

a) Here, the first term is .48 and the common ratio is 1/100 (since each new 48 is 1/100 th of the previous 48).                                   a

Use the formula s = sum of geometric series = -----------

                                                                                  1 - r

                                           0.48              48

which in this case is s = --------------- = ------------ = 48/99 = 16/33

                                          1 - 1/100        100 - 1

Check this result by finding 16/33 on a calculator.  Is the result equal to 0.484848484848.... ?  Yes

b) Here we have the bar over the 8 only.  0.48 with the bar over the 8 is equivalent to 0.4888888888 ...

                                                              0.08

or 0.4 + 0.0888888888 ...      or 0.4 + ------------

                                                                1 - 1/10

                                             

                                              0.08                       8

and this simplifies to 0.4 + ------------  =  0.4 + ---------

                                                9/10                      90

Evaluating this last result on a calculator results in 0.488888888 ...

c)  0.48 expressed as a fraction is  48/100 = 12/25

6 0
3 years ago
Using the given table of an exponential function, determine the growth/decay factor as well as the rate of increase/decrease. Ty
Westkost [7]

Answer:

The growth rate is 0.6

The growth factor is 1.6

Step-by-step explanation:

Generally, the exponential equation can be written as;

y = a(1 + r)^x

Where a is the initial value of 100

r is the growth rate

So let us form equations;

160 = 100(1 + r)^1 •••••(i)

Also;

256 = 100(1 + r)^2 •••••••(ii)

Divide equation ii by i

256/160 = 1 + r

1.6 = 1 + r

r = 1.6-1

r = 0.6

7 0
3 years ago
What will be the result if the y-intercept of the line shown is changed to an 8,
nataly862011 [7]

I’m on the same question rn and I need help.

4 0
3 years ago
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