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3 years ago

What is the sum of 13 + (-8)? -5 5 -21 21

Mathematics

2 answers:

Usimov [2.4K]3 years ago

7 0

5 is the sum (b) ahhhhahaha sorry this has to be 20 characters long

maxonik [38]3 years ago

6 0

Answer:

Step-by-step explanation:

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PLEASE HELP ASAP (MATH) WRITE IN STANDARD FORM!

sveticcg [70]

Answer:

3×10⁵

Step-by-step explanation:

Hi there !

$\frac{9.6*10^{7}}{3.2*10^{2}}=\\ \\=3*10^{7-2}\\ \\=3*10^{5}$

Good luck !

6 0

2 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

2 years ago

I need help with my homework its about adding whole numbers

Vinvika [58]

Answer:

1- 60

2-80

3-336a

4-1584x

5-1673b

6-61

7-180

8-216x

9-420

10-1402b

11-784a

12-1818

13-4547y

14-5224

15-6382z

8 0

3 years ago

Given a circle with the radius of 9.42ft. Find the circumference of this circle.

fredd [130]

Answer:

C≈59.19

Step-by-step explanation:

I hope this helps! ^^

☁️☁️☁️☁️

7 0

2 years ago

Read 2 more answers

An office building has two elevators. One elevator starts out on the 4th floor, 35 feet above the ground, as it’s defending at a

iren2701 [21]

The system of equations are y = 35 - 2.2x and y = 1.7x

Solution:

Given that, office building has two elevators.

One elevator starts out on the 4th floor, 35 feet above the ground, as it’s descending at a rate of 2.2 feet per second

Let "x" be the number of seconds for which the elevator is descending

Therefore, for "x" seconds the descended feet is 2.2x feet

The elevator is at 4 th floor, 35 feet above ground

Therefore, from 35 feet, the elevator has descended 2.2x feet for "x" seconds

Let "y" be the final position of elevator after "x" seconds

Therefore,

y = 35 - 2.2x

The other elevator starts out at ground level and is rising at a rate of 1.7 feet per second

Here, the elevator is rising at a rate of 1.7 feet per second

Therefore, for "x" seconds, the elevator has raised 1.7x feet

Here the elevator is at ground level, therefore

y = 1.7x

Thus the system of equations are y = 35 - 2.2x and y = 1.7x

6 0

3 years ago