4 years ago

Factor this expression completely x^2-r^2

Mathematics

1 answer:

Stels [109]4 years ago

6 0

(x+r)(x-r) , according to the identity a^2-b^=(a+b)(a-b)

hope it helps

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The amount dispensed by a soft-drink dispensing machine has a normal distribution with mean μ and standard deviation 0.191 ounce

nirvana33 [79]

Answer:

The value of mean is $\mu = 15.64$

Step-by-step explanation:

The normal distribution of the soft-drink dispensing machine can be stated statistically like

$X$ ~ $N (\mu ,0.191^2)$

The standard form representation is

$P(X$

Now we need to obtain $\mu$ in such a way that

$P(X>16) = 0.01$

In standard form

Since

$P(Z>16 -\frac{\mu}{0.191} ) = 0.03$

This means

$P(Z$

Now looking at the z-table for probability of 0.99 we obtain 1.88

i.e

$16 - \frac{\mu}{0.191} = 1.88$

Making $\mu\ the \ subject$

$16 - \mu = 1.88 *0.191$

$\mu = 16 -(1.88*0.191)$

$=15.64$

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3 years ago

Challenge #2 Press "Deal" to receive your cards. Drag cards from your hand to the red and blue areas. GOAL: Create two groups of

Novosadov [1.4K]

Answer:

Can you explain what the press deal and recieve cards means?

Step-by-step explanation:

8 0

3 years ago

8) 20% of 80 =<br> 40% of

pickupchik [31]

20/100 x 80
0.20 x 80
= 16

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4 years ago

Write an exponential function whose graph contains the points (1, 6) and (0, 2).

12345 [234]

Answer:

y = 2 $(3)^{x}$

Step-by-step explanation:

The exponential function is of the form

y = a $(b)^{x}$

To find a and b substitute the given points into the equation

Using (0, 2), then

2 = a $(b)^{0}$ ⇒ a = 2

Using (1, 6), then

6 = 2 $(b)^{1}$ ⇒ b = 3

Equation is y = 2 $(3)^{x}$

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3 years ago

Answer the following.

AlexFokin [52]

Answer:

I think the total is 628.20$

Step-by-step explanation:

15*12=180

180*2.99=538.2

180*.5=90

90+538.2=628.2

Hope this helped :)

3 0

2 years ago