1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Brums [2.3K]
4 years ago
9

Please help with number 2 and 3

Mathematics
1 answer:
a_sh-v [17]4 years ago
3 0
The question 2 .
428×7.1=3038.8
-12+8=-4
3.4408÷0.092 =37.4
-18÷2=-9
You might be interested in
"A laboratory tested 73 chicken eggs and found that the mean amount of cholesterol was 230 milligrams with LaTeX: \sigmaσ = 17.4
Scrat [10]

Answer:

The 95% confidence interval for the true mean cholesterol content, μ, of all such eggs is between 226.01 and 233.99 milligrams.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.95}{2} = 0.025

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.025 = 0.975, so z = 1.96

Now, find M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

M = 1.96*\frac{17.4}{\sqrt{73}} = 3.99

The lower end of the interval is the sample mean subtracted by M. So it is 230 - 3.99 = 226.01

The upper end of the interval is the sample mean added to M. So it is 230 + 3.99 = 233.99.

The 95% confidence interval for the true mean cholesterol content, μ, of all such eggs is between 226.01 and 233.99 milligrams.

4 0
3 years ago
The cost of 10 days at Healthy Gym is $ .
liq [111]

Answer: $25

Step-by-step explanation:

4 0
3 years ago
I don't know how to do these i need help ASAP plz
Eva8 [605]
Plug the x value into the x value for your questions.

8.) -57
9.) -2
5 0
3 years ago
Can someone please explain?
GREYUIT [131]

The function y = x, called the "identity" or "ramp" function, is a basic function that you'll need to add to your math vocabulary. Since the " x " here seems to have no exponent, fix that by thinking "x^1," or "x to the first power," or "y=x is a linear function."

The graph of y=x always goes thru the origin. It begins in the 3rd quadrant and ends in the 1st, and appears as a straight line with slope of m = rise / run = 1/1 = 1.

8 0
3 years ago
Which of the following represents "four times the square of a number is thirty-six"?
Lapatulllka [165]

Answer:

Option (b) is correct.

4x^2=36

Step-by-step explanation:

 Given  expression "four times the square of a number is thirty-six"

We have to write it mathematically and choose the correct options out of given options.

Consider the given expression  "four times the square of a number is thirty-six"

Then

let the number be x ,

Then four times the square of a number written mathematically as 4x^2

And given "four times the square of a number is thirty-six" written mathematically as 4x^2=36

Therefore, "four times the square of a number is thirty-six" written mathematically as 4x^2=36

Option (b) is correct.

6 0
3 years ago
Read 2 more answers
Other questions:
  • Which values are solutions to the inequality below? √x ≤ 5
    8·1 answer
  • Please answer a a a a a a a a
    13·1 answer
  • Please help!!
    12·2 answers
  • Jeremy’s family wants to rent bicycles. The table shows the cost in dollars, y, of renting a bicycle for x hours.
    11·1 answer
  • Negative 3/2 times negative 5 1/4
    8·1 answer
  • Latoya buys candy that costs $8
    8·1 answer
  • If 420 miles = 20 cm on a map, how many miles is 1 cm?
    13·2 answers
  • James gave Robert half a candy bar. Robert gave his sister half of what he had. What fraction of the whole candy bar did Robert
    10·1 answer
  • ASAP!!! BRAINIEST + 100 POINTS :D<br><br> Show the steps <br> 5(x−2)^2 + 6 = 86<br><br> Thank you!
    14·1 answer
  • The length of a rectangle is a inches. Its width is 5 inches less then the length. Find the area and perimeter of the rectangle
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!