Please Help Will Give Brainliest If Correct!The line segment shown is rotated 90° about the origin (counterclockwise). What are the new coordinates of point A?

A) (2, 1)
B) (-2, 1)
C) (-2, -1)
D) (1, 2)

Answers

Answer 1

Answer: Point A before being rotated = (1,-2)

A point (x,y) is rotated counterclockwise by 90°. The result will be (-y,x)

If point (1,-2) rotated counterclockwise by 90°, the result will be (2,1)

ANSWER: A. (2,1)

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One plant from the garden is randomly selected. There is a 30% chance that the plant was purchased this year, and there is a 6% chance that the plant was purchased this year and produces berries. What is the probability that the chosen plant does NOT produce berries, given that the plant was purchased this year? Write the probability as a percent. Round to the nearest tenth if needed. ____________%
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The rate of change of y is proportional to y. when x=0, y=4 and when x=3, y=10. what is the value of y when x=6?

Answers

The rate of change of y is proportional to y. when x=0, y=4 and when x=3, y=10 then the value of y is 12 when x =6.

The two points from the given information are (0, 4) and (3, 10).

Let us find the $slope = (10-4)/(3-0)$

=6/3

Now let us find the y intercept to write the equation in slope intercept form.

Consider the point (0, 4) to find y intercept.

Plug in the point values in slope intercept form:

4=2(0)+b

Solve for b:

b=4

The equation in slope intercept form is y=2x+4.

Now let us find the value of y when x=6.

Plug in x as 6 in the equation y=2x+4.

y=2(6)+4

y=12+4

y=16

Hence, the value of y is 16 when x is 6.

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We know x+y=0; so, if x=6 y= -6

Solve for x. 8/9x=32

Answers

Answer:

0.44444444444

Step-by-step explanation:

11c+7c-13c=115
whats the value of c?

Answers

Simplify both sides of the equation

11c+7c -13c = 115

Simplify

5c= 115

Divide both sides by 5

5c/5 = 115/5

c = 23

I hope that's help !

Billy stacked six pieces of wood on top of one another. If each piecewas three-quarters of a foot tall, how tall was his pile?

Answers

$6*0.75=6* (3)/(4) = (6*3)/(4) = (18)/(4) = (16+2)/(4) = (16)/(4) + (2)/(4) =4.5$

sherry had $125.05 in her checking account She made deposit of $28.35 and $78.88 how much money was in sherry account after the deposit

Answers

Answer:

$17.82

Step-by-step explanation:

$125.05 - 28.35 = 96.7 \n 96.7 - 78.88 = 17.82$

Answer: $232.48

Step-by-step explanation: an equation you could use would be:

125.25+(28.35+78.88)

Add parentheses: 28.35+78.88= 107.23

Add the rest: 125.25+107.23= 232.48

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.