3 years ago

Find the absolute mean deviation for this set (-32,9,11,12). A)0 B)8 C)16 D)32

Mathematics

2 answers:

Artyom0805 [142]3 years ago

4 0

Answer:

The answer is c)16

Step-by-step explanation:

Alex Ar [27]3 years ago

3 0

I think 0 because 9+11+12=32
32+-32 or 32-32= 0

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alekssr [168]

Answer:

Step-by-step explanation:

7 0

3 years ago

A tire company finds that the lifespan for one brand of its tires is normally distributed with a mean of 47,500 miles and a stan

Illusion [34]

Answer:

42580 miles

Step-by-step explanation:

Mean = $\mu = 47500$

$\sigma = 3000$

The manufacturer does not want to replace more than 5% of the tires

$P(X\leq x)=5\%$

$P(\frac{x-\mu}{\sigma}\leq \frac{x-47500}{3000})=0.05$

By using normal table values :

$\frac{x-47500}{3000}=-1.64$

$x=(-1.64 \times 3000)+47500$

$x=42580$

Hence the approximate number of miles for the warranty is 42580 miles

6 0

4 years ago

Solve by completing the square p^2 +10p - 3 = 0

Mrac [35]

Solving $p^2 +10p - 3 = 0$ by completing the square method we get $(p+5)^2-28=0$

Step-by-step explanation:

We need to solve by completing the square method.

We are given: $p^2 +10p - 3 = 0$

The Completing square method is: (a+b)^2 = a^2+2ab+b^2

Solving:

$p^2 +10p - 3 = 0\\For \,\,making\,\,perfect\,\,square\,\,we\,\,add\,\,and\,\,subtract\,\,(5)^2\\p^2+2(p)(5)^2+(5)^2-3-(5)^2=0\\(p+5)^2-3-25=0\\(p+5)^2-28=0$

Solving $p^2 +10p - 3 = 0$ by completing the square method we get $(p+5)^2-28=0$

Keywords: completing the square method.

Learn more about completing the square method at:

#learnwithBrainly

7 0

3 years ago

The table shows the cost for bowling at two bowling alleys

tekilochka [14]

1. 2 + 2.5x = y
2. 4 + 2x = y

Hope this helps.

7 0

4 years ago

What is the length of BB' ?

cestrela7 [59]

The length of BB' is 5.39 units.

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3 years ago