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Volgvan
3 years ago
11

Shania is buying a car. She has narrowed her choice down to three cars: a sedan, a hatchback, and a wagon. She uses a spinner di

vided into three colored sections to decide which car to buy. She first spins the spinner 75 times to check the frequencies that it produces. Her results are shown in the table.

Mathematics
1 answer:
marishachu [46]3 years ago
5 0

Answer:

The answers C

Step-by-step explanation:

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How can I factorise (2x cubed - 5x + 3) ?
PilotLPTM [1.2K]
2x^3-5x+3=2x^3-2x-3x+3\\\\=2x(x^2-1)-3(x-1)\\\\=2x\underbrace{(x^2-1^2)}_{use\ (*)}-3(x-1)\ \ \ |(*)\ a^2-b^2=(a-b)(a+b)\\\\=2x\underbrace{(x-1)}_{(**)}(x+1)-3\underbrace{(x-1)}_{(**)}\\\\=(x-1)[2x(x+1)-3]\\\\=(x-1)\underbrace{(2x^2+2x-3)}_{(***)}\\\\(***)\ 2x^2+2x-3\to a=2;\ b=2;\ c=-3\\\\x=\frac{b^2\pm\sqrt{b^2-4ac}}{2a}

therefore\\x=\frac{-2\pm\sqrt{2^2-4(2)(-3)}}{2(2)}=\frac{-2\pm\sqrt{4+24}}{4}=\frac{-2\pm\sqrt{28}}{4}=\frac{-2\pm\sqrt{4\cdot7}}{4}=\frac{-2\pm2\sqrt7}{4}\\\\=\frac{-1\pm\sqrt7}{2}\\\\so,\ the\ answer:\\\\(x-1)\cdot2\left(x-\frac{-1-\sqrt7}{2}\right)\left(x-\frac{-1+\sqrt7}{2}\right)\\\\=\boxed{(x-1)(2x+1+\sqrt7)\left(x+\frac{1-\sqrt7}{2}\right)}=\boxed{\frac{1}{2}(x-1)(2x+1+\sqrt7)(2x+1-\sqrt7)}
7 0
3 years ago
Read 2 more answers
which of the following represent s of the graph of f (x) equals x exponent 3 think about the reflectional drive using Desmos.
ololo11 [35]

The correct answer is A.

lets discard the other options:

For B:

B is always positive, but f(x) is not, so B graph is not the answers

For C:

C is always positive too, so it cannot be the desire graph.

For D:

D is always negative, but we know that x exponent 3 is positive for all positive numbers,

6 0
1 year ago
-2x + 5&lt;7<br> whats x equal to
ryzh [129]

Answer:

x>-1

Step-by-step explanation:

Hope this helps. Plz give brainliest.

8 0
3 years ago
Read 2 more answers
Please help me with this question :)<br>​
zlopas [31]

Answer:

q>27/61

Step-by-step explanation:

                                                 50*q+43-(>11*q+70)>0

Step 1. Divied both sides by 61    q-(27/61)

Step 2. Add 27/61 to both sides   q >27/61

Step 3. Inequality  plot for 61.000q -27.000 > 0    

Answer: q>27/61 or 27/61

8 0
3 years ago
Sara can take no more than 22 pounds of luggage on a trip. Her suitcase weighs 112 ounces, How many more pounds can she pack wit
postnew [5]
OK so 1 pound=16 ounces
so 112 divided by 16 is 7
22-7= 15
may be wrong with calculation I did mental math but there is the work just check answers
3 0
3 years ago
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