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Nata [24]
3 years ago
14

PLEASE HELP I NEED THIS TODAY!!​

Mathematics
2 answers:
IceJOKER [234]3 years ago
5 0

Answer:

25\pi

Step-by-step explanation:

the area of circle formula: \pi r^{2}

And the radius is 5, so 5^2= 25

Thus, the answer is 25\pi

Anika [276]3 years ago
4 0

Answer:

78.5

Step-by-step explanation:

  1. πr^{2} = A
  2. Plug in our numbers: 3.14 × 5^{2}  
  3. 5^{2} = 25  
  4. 3.14 × 25 = 78.5

I hope this helps!

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What are the approximate solutions of 4x2 + 3 = −12x to the nearest hundredth?
Gwar [14]
First 
4x^{2} + 12x + 3 = 0
determine if this equation were factorable, it's not for this one
so I use quadratic formula, try to search the formula online

x1 =  \frac{-12 +  \sqrt{(12)^{2} - 4*4*3} } {2*4} =  \frac{-12 +  4\sqrt{6} }{8} =  \frac{4(-3 +  \sqrt{6}) }{8} =   \frac{-3 + \sqrt{6}}{2} = - 0.28
x2 = \frac{-12 - \sqrt{(12)^{2} - 4*4*3} } {2*4} = \frac{-12 - 4\sqrt{6} }{8} = \frac{4(-3 - \sqrt{6}) }{8} = \frac{-3 - \sqrt{6}}{2} = - 2.72

<span>x ≈ −2.72 and x ≈ −0.28 is the solution</span>

3 0
4 years ago
Design specifications require that a key dimension on a product measure 105 ± 12 units. A process being considered for producing
marta [7]

Answer:

Cpk = Cpu = Cpl = 0.4785

Step-by-step explanation:

Solution:-

- The capability of a process is determined using the capability index ( Cpk ). The index helps in determining the output of the process lies within the specification limits.

- The key dimension on a product measure is:

                                 105 ± 12 units

- Process is producing this product at a 6-sigma quality standards i.e ( process is producing this product has a standard deviation (σ) of three units.)

Where,         Standard Error in measured value = 12 units.

- The process capability (Cpu) is defined based on the Upper Specification Limit of the process (USL):

                             Cpu = (USL - u) / 3σ

- The process capability (Cpl) is defined based on the Lower Specification Limit of the process (LSL):

                             Cpl = ( u - LSL) / 3σ

- Assume that the process is centered with respect to specifications, then the given absolute value of u = 105 units.

Where the specification limits are defined as:

                             LSL = u - SE = 105 - 12

                             LSL = 93 units

                             USL = u + SE = 105 + 12

                             USL = 117 units

- Now evaluate the Process capability on each of the two limits specification limits:

                           Cpu = (USL - u) / 3σ

                           Cpu = (117 - 105) / 3σ

                           Cpu = 4 / σ

                           Cpl = ( u - LSL) / 3σ

                           Cpl = ( 105 - 99 ) / 3σ

                          Cpl = 4 / σ    

- The minimum of Cpu and Cpl is denoted as the Cpk value:

                           Cpk = min ( Cpu , Cpl )

                           Cpk = Cpu = Cpl = 4 / 8.36

                           Cpk = Cpu = Cpl = 4 / 8.36 = 0.4785          

               

6 0
3 years ago
Help me solve this problem and explain to me please
Natalka [10]
The answer would be 3 and 2. Complementary means when you add two angles together, they equal 90° or a right angle.
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3 years ago
Please helo i will make brainless for correct answers!​
elena-s [515]
False is the correct answer
7 0
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6/10 as there is 10 millimetres in a centimetre
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