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3 years ago

19 dollars for 5 books

Mathematics

1 answer:

viktelen [127]3 years ago

3 0

Answer:

$3.80 per book

Step-by-step explanation:

I divided 19 by 5 to get the price per book

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What is the solution to the equation x + 8.5 = 64.5? 7.6 48 56 73

Bogdan [553]

The solution to x + 8.5 = 64.5 is 56.

x + 8.5 = 64.5
- 8.5 - 8.5
---------------------------
x = 56

4 0

3 years ago

Read 2 more answers

3. Is the triangle a right triangle?

dem82 [27]

Yes it is a right triangle

3 0

3 years ago

Work out the area of this quarter circle of radius 8cm, Give you answer in terms of pi

oee [108]

Answer:

The area of the quarter circle is $16\pi\ cm^{2}$

Step-by-step explanation:

we know that

The area of a quarter circle is equal to

$A=\frac{1}{4}\pi r^{2}$

we have

$r=8\ cm$

substitute the value

$A=\frac{1}{4}\pi (8)^{2}$

$A=16\pi\ cm^{2}$

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3 years ago

How do you do this?? <br> explain it well please!

aleksley [76]

Group like terms together. We'll get 4x on the left side of our equation and 16 on the right side. Then 4x = 16, and x = 4 (answer)

5 0

4 years ago

The mean number of daily surgeries at a local hospital is 6.2. Assume that surgeries are random, independent events. (a) The cou

Scilla [17]

Answer:

a) correct option is

Poisson distribution is 6.2 and standard deviation is 2.49

b) probability for only 2 or less than 2 surgeries in a given day is 0.0536

Step-by-step explanation:

Given data:

mean number is given as 6.2

correct option is

Poisson distribution is 6.2 and standard deviation is 2.49

we know that variance is given as $\sigma^2 = mean = 6.2$

hence, standard deviation is given as $\sqrt{6.2} = 2.48998$

thus standard deviation is 2.49

correct option is

Poisson distribution is 6.2 and standard deviation is 2.49

b) probability for only 2 or less than 2 surgeries in a given day is

$P(X \leq 2) = P(X =0) + P(X =1) + P(X =2)$

$= \frac{e^{-6.2} 6.2^0}{0!} +\frac{e^{-6.2} 6.2^1}{1!} +\frac{e^{-6.2} 6.2^2}{2!}$

= 0.002029 + 0.012582+ 0.039006

= 0.053617

= 0.0536

7 0

3 years ago