All categories

3 years ago

Please help!!!!this is my last part of my discussion and I am stuck on it I would really appreciate the help!!

Mathematics

1 answer:

frosja888 [35]3 years ago

5 0

x + 5 = 0 - > x = -5

You might be interested in

if the working age population is 250 million,170 million are unemployed and 9 million are unemployed, the unemployment rate is

Amiraneli [1.4K]

Answer: 5%

Step-by-step explanation:

9/179

4 0

2 years ago

I will give brainiest to whoever answers correctly !!

Viktor [21]

Answer: 10k

Step-by-step explanation:

6 0

3 years ago

An article in Knee Surgery, Sports Traumatology, Arthroscopy, "Arthroscopic meniscal repair with an absorbable screw: results an

igomit [66]

Answer:

Mean = 1.57

Variance=0.31

Step-by-step explanation:

To calculate the mean and the variance of the number of successful surgeries (X), we first have to enumerate the possible outcomes:

1) Both surgeries are successful (X=2).

$P(e_1)=0.90*0.67=0.603$

2) Left knee unsuccessful and right knee successful (X=1).

$P(e_2)=(1-0.9)*0.67=0.1*0.67=0.067$

3) Right knee unsuccessful and left knee successful (X=1).

$P(e_3)=0.90*(1-0.67)=0.9*0.33=0.297$

4) Both surgeries are unsuccessful (X=0).

$P(e_4)=(1-0.90)*(1-0.67)=0.1*0.33=0.033$

Then, the mean can be calculated as the expected value:

$M=\sum p_iX_i=0.603*2+0.067*1+0.297*1+0.033*0\\\\M=1.206+0.067+0.297+0\\\\M=1.57$

The variance can be calculated as:

$V=\sum p_i(X_i-\bar{X})^2\\\\V=0.603(2-1.57)^2+(0.067+0.297)*(1-1.57)^2+0.033*(0-1.57)^2\\\\V=0.603*0.1849+0.364*0.3249+0.033*2.4649\\\\V=0.1115+0.1183+0.0813\\\\V=0.3111$

3 0

3 years ago

What is the volume of a cone with the given dimensions?

yuradex [85]

B. 102.57 cu. cm is the answer Solution: V=πr^2h The diameter is 14. To find the radius you divide the radius by 2 which is equal to 7. [Radius is 2 times diameter] V= 3.14×7×7×2 V= 102.57

8 0

3 years ago

Read 2 more answers

Sophia used the Order of Operations to simplify 4(5 - 2) to 4x3.

Alchen [17]

Answer:

Step-by-step explanation:

<u>Order of operations, use the operation within the parenthesis:</u>

1) 5 - 2 = 3
2) 4*3 = 12

<u>Distributive property, a(b + c) = ab + ac:</u>

1) 4*5 - 4*2 = 20 - 8
2) 20 - 8 = 12

Both ways are correct and lead to same result

5 0

2 years ago