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bagirrra123 [75]
3 years ago
12

What is the x for : -2x^2+24x-72=0

Mathematics
2 answers:
Vanyuwa [196]3 years ago
4 0

Answer:

x = 6

Step-by-step explanation:

stepan [7]3 years ago
3 0

Answer:

x=6

Step-by-step explanation:

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Need help with my math checking it over just making sure its right please help it is a lot!
lilavasa [31]

Answer:

14. 14.86 (simple subtraction)

15. 4 dollars (156/39 = 4)

18. 49 (36,39,44,48,50,50,54,55 so mean of 48 and 50 is 49)

19.14 (3.5/0.25)

20. A(understanding question contex)

25. 3a + 3b or C (add all the a's and b's together)

26. 5 (Divide apples by 3)

28.C(multiply all the sides together)

29. A (12/7 is fraction form of 12 : 7)

30. C (rate is 20 so 6 * 20 = 120)

31. D

Hoped this helped, this took a while to do :)

8 0
3 years ago
To qualify for a police academy, applicants are given a test of physical fitness. The scores are normally distributed with a mea
djyliett [7]

Answer:

X₀ = 71.65

Step-by-step explanation:

given,

mean (μ ) = 64

standard deviation (σ) = 9

                                 σ²  = 81

selected candidate are top 20 % candidate

P( X > X₀)  = 0.2

P( Z > \dfrac{X_0-\mu}{\sigma}) = 0.2

P( Z > \dfrac{X_0-64}{9})= 0.2

P( Z > Z₀)  = 0.2

Z_0 = 0.85 = \dfrac{X_0-64}{9}

X₀ = 71.65

Hence, the cut off score is equal to X₀ = 71.65

6 0
3 years ago
What is 50% of 72? what is 125 % of 108
mars1129 [50]
For the 1st one:

x/72=50/100     x=36

2nd one:

x/108=125/100
100x=13500

x=135
3 0
4 years ago
Read 2 more answers
FAST PLEASE
saul85 [17]

Answer:

(-2,-1)

Step-by-step explanation:

(-1,2) ---->> (-2,-1)

6 0
3 years ago
Can anybody help me with this?
Alex787 [66]

Answer:

  A

Step-by-step explanation:

The rate of change for the table is found using the slope formula. The rate of change for the linear function is the coefficient of x.

__

<h3>table</h3>

The slope formula tells us the rate of change is ...

  m = (y2 -y1)/(x2 -x1)

  m = (-9 -(-10))/(-1 -(-4)) = 1/3

<h3>equation</h3>

The coefficient of x in the equations of the offered answer choices are 1/4 and 6.

<h3>comparison</h3>

The relations between the various slopes are ...

  1/4 < 1/3 < 6

That is, the equation with a slope of 1/4 has a rate of change less than that of the function represented by the table:

  y = 1/4x +4 because ... table of values is 1/3

6 0
2 years ago
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