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vekshin1
3 years ago
11

Does the following equation, y= -x2 -10x +1 have a maximum or minimum. Explain

Mathematics
1 answer:
PilotLPTM [1.2K]3 years ago
3 0

Answer:

Step-by-step explanation:

Your y= -x2 -10x +1 should be written as y = -x^2 -10x +1.  This is a quadratic function.  Because the coefficient (-1) of the x^2 term is negative, we know immediately that the graph (a parabola) opens down, and thus has a maximum.

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AABC is similar to AAXY by a ratio of 3.2. If BC = 24, what is the length of XY?
dusya [7]

Answer:

XY = 16

Step-by-step explanation:

The ratio is 3 to 2 meaning that the sides of the triangle ABC and triangle AYY are in a ratio of 3 to 2.   You are comparing the big triangle to the small triangle and the sides are compared the same way.

3:2 = 24:XY                  

 3/2 = 24/XY

 3 XY = 48

 XY = 48/3

  XY = 16

5 0
3 years ago
A student wants to report on the number of movies her friends watch each week. The collected data are below:
Ann [662]

The best measure of center for a set of data is the median value.

To find the median list the values from

Smallest to largest:

0, 0, 1, 1, 2,2, 2, 14

Since there is an even number of values, find the middle two numbers, add them together and divide by 2:

1+2 = 3

3/2 = 1.5

The answer is median 1.5

4 0
3 years ago
Read 2 more answers
10. Solve for x.<br> 4(root) 2<br> 4(root)2<br> X
bonufazy [111]

Answer:

8

Step-by-step explanation:

<h2>—Math</h2>

x² = (4√2)² + (4√2)²

x² = 32 + 32

x² = 64

x = √64

x = 8

6 0
3 years ago
A spinner is divided into six equal-sized sectors labeled 1 through 6. Dwayne spins this spinner 12 times. Let X
slavikrds [6]

Answer:

b) μ = 2 and σ = 1.29

Step-by-step explanation:

<u><em>Step(i):-</em></u>

<em>Given that the A spinner is divided into six equal-sized sectors labelled 1 through 6</em>

<em>Given that the probability of labelled '1'</em>

<em>                       </em>p = \frac{1}{6} =0.16

<em>                      q = 1-p =  1- 0.16 = 0.84</em>

Let 'X' be a random variable in binomial distribution

The mean of the binomial distribution

      μ = n p

     μ  =  12 (\frac{1}{6} ) = 2  

<em>The mean of the binomial distribution  = 2</em>

<u><em>Step(ii):-</em></u>

The standard deviation of X

                σ = \sqrt{npq}

               σ = \sqrt{12(0.16)(0.84}

                  σ = 1.269

<em>The standard deviation of the binomial distribution</em>

<em>                </em> σ = 1.269

<u><em></em></u>

<u><em></em></u>

6 0
3 years ago
Read 2 more answers
you deposit $350 in a savings account.the account earns 2.5% simple interest per year. what is the balance after 2 years
Monica [59]

Answer:

17.5

Step-by-step explanation:

350×2.5×1/100

17.5/2

8.75

5 0
3 years ago
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