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Naily [24]
2 years ago
10

Evaluate 4(x - 3) + 5x - x2 for x = 2. O A. 16 O B. 2 O c. -2 O D. 11 SUB

Mathematics
2 answers:
k0ka [10]2 years ago
5 0
The answer is B because if you
Lina20 [59]2 years ago
4 0
I think it is B god bless
You might be interested in
7) 4b2 + 8b + 7 = 4<br> What the answer
Anit [1.1K]

4b² + 8b + 3 = 0

4b² + 2b + 6b + 3 = 0

2b(2b + 1) + 3(2b + 1) = 0

(2b + 3)(2b + 1) = 0

b = -1/2 or b = -3/2

8 0
2 years ago
Read 2 more answers
The manufacturer of an airport baggage scanning machine claims it can handle an average of 560 bags per hour. (a-1) At α = .05 i
ioda

Answer:

The calculated value t = 1.76 < 2.131 at 0.05 level of significance

Null hypothesis is accepted

The manufacturer’s claim is greater than 560 bags per hour

Step-by-step explanation:

<u><em>Explanation</em></u>:-

Given sample size 'n' =16

Given the manufacturer of an airport baggage scanning machine claims it can handle an average of 560 bags per hour.

mean of the Population 'μ' = 560

Mean of the sample Χ⁻ = 538

sample standard deviation' S' = 50

<em><u>Null hypothesis</u></em><em>:H₀:μ > 560</em>

<em><u>Alternative Hypothesis</u></em><em>:H₁ : :μ < 560 (left tailed test)</em>

<em>Test statistic</em>

   t = \frac{x^{-}-mean }{\frac{S}{\sqrt{n} } }

  t = \frac{538-560 }{\frac{50}{\sqrt{16} } } = -1.76

|t| = |-1.76| = 1.76

<em>Degrees of freedom </em>

<em>γ = n-1 =16-1 =15</em>

t_{\frac{\alpha }{2} } = t_{\frac{0.05}{2} } =t_{0.025} =2.131

<em><u>Conclusion</u></em>:-

The calculated value t = 1.76 < 2.131 at 0.05 level of significance

Null hypothesis is accepted

The manufacturer’s claim is greater than 560 bags per hour

6 0
3 years ago
6. A cube has a volume of 5 feet?. What is the volume of the cube in in?
xenn [34]

The answer is 60 inches.

8 0
2 years ago
I know the answer is C. but I need to know how to solve it!
otez555 [7]
Yes you are right it's C)
Notice  that f(-2) = (-2)³ +2( - 2)² + 4(-2) + 8 =0
Then x³+2x²+4x+8 is divisible by (x+2)
Perform this division & you will get:

x³+2x²+4x+8 = (x+2)(x²+4)
 The root of (x+2) is the value that render it nil, that is x=-2
  The root of (x²+4) are imaginary (not real) because
  x²+4 =0 ==> x² = -4 & x=√-4 or x= 2i (nor real).
Hope you understood the reasoning



3 0
2 years ago
HURRY
malfutka [58]

Answer:

<em>x = 3.</em>

Step-by-step explanation:

1.  <u><em>Add 2 + 7, and you get 9.</em></u>

2.  <u><em>Now find what 3 multiplied by what equals 9.</em></u>

3. <em><u>3 x 3 = 9.</u></em>

4.  <em><u>Therefore, x = 3.</u></em>

5.  <em><u>3 x 3 - 2 = 7.</u></em>

4 0
3 years ago
Read 2 more answers
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