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Sphinxa [80]
3 years ago
7

Brainliest to best answer.

Mathematics
1 answer:
ohaa [14]3 years ago
3 0
1) 15/15 which is 1
2)100/30 which is 3 1/3
3)8.2
4) too long sorry
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Which two equations would be most appropriately solved by using the quadratic formula?
leva [86]

For this case we have that by definition, the quadratic formula is:x = \frac {-b \pm \sqrt {b ^ 2-4 (a) (c)}} {2a}

A quadratic equation is of the form:

ax ^ 2 + bx + c = 0

Option A: This equation can be solved without the quadratic formula

x ^ 2 = \frac {9} {3}\\x ^ 2 = 3\\x = \pm \sqrt {3}

Option B:

This equation is not as easy to solve by factoring or as option A. We can use the quadratic formula.

Option C:

-2x ^ 2 + 5x = 7

Similarly, this equation can be solved with the quadratic formula

Option D:

- (x - 3) (x + 9) = 0

In this factored equation we can see that the roots are

x_ {1} = 3\\x_ {2} = - 9

Answer:

Option B, C

4 0
4 years ago
1.Where is the least change in the amount of money earned?
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30 or 3 and 4 weeks hope this helps
6 0
3 years ago
Read 2 more answers
The difference between 16 and some number , x is 48. Find x
lilavasa [31]

Answer:

32

Step-by-step explanation:

x + y = 48

x - y =  16

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

2x      = 64

x = 32

32-y = 16

y = 16

6 0
3 years ago
Read 2 more answers
(5b2+3b)+(b2-2b) in standard form
den301095 [7]

Answer:

6b+b^2 (b to the 2nd power)

Step-by-step explanation:

8b+b^2-2b (b to the 2nd power)

(8b-2b)+b^2

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Hopefully this helps :)

3 0
3 years ago
Read 2 more answers
Question 1(Multiple Choice Worth 3 points)
KonstantinChe [14]

Answer:

O The value of x is less than 16.

Step-by-step explanation:

Do the actual work:  solve for x:

Divide both sides by 107.06:

          16

x < -------------- = 0.149    This does not agree well with any of your answer

       107.06                     choices.  If I had to choose one answer, it'd be the                  

                                        first one, since "the value of x is less than 16" is

                                        certainly true.

3 0
3 years ago
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