Help me plz thxxx thx thx

Answers

Answer 1

Answer: The area of the base is 25, and the height is 12+12*2=36, so the volume is 25*36=900.

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Which strategy would not correctly solve this story problem?Ella babysits her baby brother for 30 minutes on Monday, for 45 minutes on Thursday, and for 35 minutes on Friday. Ella will continue this schedule for 6 weeks. How many minutes will Ella babysit in 6 weeks?

A.
Translate into an equation. (30 + 45 + 35) ÷ 6 = m

B.
Use logical reasoning. Add together the number of minutes Ella babysits each week: 30 + 45 + 35 = 110. Multiply 110 by the number of weeks Ella continues this babysitting schedule.

C.
Draw a diagram. Draw 6 large squares. Add up the numbers 30, 45, and 35 to get 110. Write 110 in each square. Add up the numbers in the squares.

D.
Make a table.

Week 1 2 3 4 5 6
Total (minutes): 110 220 330 440 550

Answers

The strategy or equation which do not solve this problem is letter A and B.
The letter A goes m=(30+45+35)/6, the question asked how many minutes Ella will babysit in six weeks. In a week Ella babysits for 110 minutes, instead of dividing it by 6 weeks (which is shown in the equation of letter A), you have to multiply by 6 weeks. It should go like this, m= (30+45+35) x 6.

A machine that produces a major part for an airplane engine is monitored closely. In the past, 10% of the parts produced would be defective. With a .95 probability, the sample size that needs to be taken if the desired margin of error is .04 or less is

Answers

Answer: 216

Step-by-step explanation:

The formula to find the sample size , if prior population proportion is known :-

$n=p(1-p)((z_(\alpha/2))/(E))^2$

Given : The prior proportion of defective parts : p= 0.10

Significance level : $\alpha=1-0.95=0.05$

Critical value : $z_(\alpha/2)=1.96$

Margin of error : $E=0.04$

Now, the required sample size will be :-

$n=0.1(0.9)(((1.96))/(0.04))^2=216.09\approx216$

Hence, the minimum required sample size = 216

Final answer:

To achieve a margin of error of .04 or less with a 95% confidence level when the defect rate is 10%, at least 217 samples need to be taken.

Explanation:

The question pertains to the field of statistics, specifically sample sizes and margin of error. In order to estimate the minimum sample size needed to achieve a desired margin of error of .04 or less, we can use the formula for sample size in proportions: n = (Z^2*p*(1-p))/E^2.

In this formula:

Z refers to the z-value which, for a 95% confidence level, is 1.96.
p is the estimated proportion of defective parts, which in this case is 0.1 or 10%.
E is the desired margin of error, which is 0.04.

Substitute the values into the formula: n = (1.96^2*0.1*0.9)/(0.04^2), yielding n=216.09.

Since we can't have a fraction of a sample, we round up to get n = 217. Therefore, we need a sample size of 217 to reach a margin of error of .04 or less with a 95% confidence level.

Learn more about Sample Size Calculation here:

brainly.com/question/34288377

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What is the equation of a line that is perpendicular to a line with a slope of 2 and passesthrough the point (-2, 0)?

Answers

To find the equation of a perpendicular line, you first need to find the negative reciprocal of the slope given. The slope is -1/3, so the slope of the perpendicular line will be 3

Now we just need to find the y intercept using the point (3, 2) and you can plug the coordinates in and then solve for b. Let's see what that looks like.

y=3x+b

2=3*(3)+b

2=9+b

-7=b So now we know the y-intercept and slope. We just put them together now

y=3x-7

Look at the broswer my friend you can do it

The exponential function g, whose graph is given below, can be written as g(x)=a*b^xComplete the equation for g(x)

PLEASE HELP!!!!

Answers

Answer:

g(x) = $9((1)/(3))^x$

Step-by-step explanation:

Exponential function 'g' that can be written as g(x) = a.bˣ

From the graph attached,

Graph of the function passes through two points (0, 9) and (1, 3)

g(0) = a.b⁰

9 = a

Similarly, g(1) = a.b¹

3 = a.b

3 = 9(b)

b = $(3)/(9)=(1)/(3)$

Therefore function will be,

g(x) = $9((1)/(3))^x$

Three-fourths is
and
1 and one-half is
.

Answers

Answer:

3/4 + 1/2 = 5/4 or 1 and 1/4

Step-by-step explanation:

Find a common denominator for the two fractions. 1/2 becomes 2/4 because you are multiplying top and bottom by 2 to get 4 since 3/4 already has 4.

Now it becomes 3/4 + 2/4. Add the numerators and keep the denominator. You get 5/4. To get a mixed number, divide 5 by 4. Four goes in once, and leaves a remainder of 1. Keep your original denominator and write 1 and 1/4.

The graph below represents which system of inequalities?

Answers

Answer:

Graphing Systems of Linear Inequalities

To graph a linear inequality in two variables (say, x and y ), first get y alone on one side. ...

If the inequality is strict ( < or > ), graph a dashed line. ...

Finally, pick one point that is not on either line ( (0,0) is usually the easiest) and decide whether these coordinates satisfy the inequality or not.