Sam's class voted on whether or not to do science fair projects in groups. Out of 20 votes, 14 were in favor of working in groups. What percentage of the votes were in favor of working in groups

Answers

Answer 1

Answer: 70% were in favor so working in groups. You do 14 over 20. 14 votes divided by 20 votes is 70% of the overall votes.

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Wisconsin Public Radio wants to duplicate a survey conducted in 2011 that found that 68% of adults living in Wisconsin felt that the country was going in the wrong direction. How many people would need to be surveyed for a 90% confidence interval to ensure the margin of error would be less than 3%? Be sure to show all your work and round appropriately
Length of two sides of a triangle is given as 4cm and 4cm which triangle is this
Choices :A. 40.1 metersB. 12.3 metersC. 19.2 metersD. 47 meters
What is the solution to the following inequality X/-2 > 5
Medical records indicate that people with more education tend to live longer; the correlation is 0.48. The slope of the linear model that predicts lifespan from years of education suggests that on average people tend to live 0.8 extra years for each additional year of education they have. The slope of the line that would predict years of education from lifespan is

How many $10 bills are equal to a 1000 bill?

Answers

Answer:

100

Step-by-step explanation:

because 10×100=1000

Answer:

100 of the $100 bills equals to $1000

Step-by-step explanation:

1000/100=100

Consider a specific chemical reaction represented by the equation aa + bb → cc + dd. in this equation the letters a, b, c, and d represent chemicals, and the letters a, b, c, and d represent coefficients in the balanced equation. how many possible values are there for the quantity "c/d"?

Answers

We are usually concerned with one reaction. That is, the production of one specific set of products from a specific set of reactants.

The number of values of c/d would be the number of possible ways that a and b could recombine to form different pairs of products c and d. (You might get different reactions at different temperatures, for example. Or, you might get different pars of ions.)

Usually, the number of values of c/d is one (1). (Of course, if you simply swap what you're calling "c" and "d", then you double that number, whatever it is.)

Two angles in a triangle are equal and their sum is equal to the third angle in the triangle. What are the measures of each of the three interior angles?

Answers

A triangle is 180 if two angles equal to eachother and the other angle is these two combines the angels will be 45 45 90
45+45=90

Let X1, X2, and X3 represent the times necessary to perform three successive repair tasks at a service facility. Suppose they are normal random variables with means of 50 minutes, 60 minutes, and 40 minutes, respectively. The standard deviations are 15 minutes, 20 minutes, and 10 minutes, respectively. a Suppose X1, X2, and X3 are independent. All three repairs must be completed on a given object. What is the mean and variance of the total repair time for this object.

Answers

Answer:

The mean of the total repair time is 150 minutes.

The variance of the total repair time is 725 minutes^2.

Step-by-step explanation:

To solve this problem, we have to use the properties of the mean and the variance. Our random variable is the sum of 3 normal variables.

In the case, for the mean, we have that the mean of the sum of 3 normal variables is equal to the sum of the mean of the 3 variables:

$y=x_1+x_2+x_3 \n\nE(y)=E(x_1+x_2+x_3)=E(x_1)+E(x_2)+E(x_3)\n\nE(y)=50+60+40=150$

For the variance, we apply the property for the sum of independent variables (the correlation between the variables is 0):

$V(y)=V(x_1)+V(x_2)+V(x_3)\n\nV(y)=s_1^2+s_2^2+s_3^2\n\nV(y)=15^2+20^2+10^2\n\nV(y)=225+400+100\n\nV(y)=725$

What is nearest tenth of 0.273

Answers

Answer:

0.3

To round 0.273 to the nearest tenth consider the hundredths’ value of 0.273, which is 7 and equal or more than 5. Therefore, the tenths value of 0.273 increases by 1 to 3.

0.273 rounded to the nearest tenth = 0.3

PLeasse Helpp its urgent pleassesssssA rectangular piece of metal is 5 inches longer than a number, x. The width is 3 inches less than x. Squares with sides 2-inches long are cut from each of the four corners and the flaps are folded upward to form an open box. If the volume of the box is 40 inches cubed, what does x equal? *

What is the original length of the rectangular piece of metal in inches? Answer with a number, no units. *

What is the original width of the rectangular piece of metal in inches? Answer with a number, no units.

Answers

Answer:

X=16

Step-by-step explanation:

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Can somebody help me !