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i need help on 2, 3 and 4 plz thank u ( :
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1 month ago
100 points and brainliest
General
1 month ago
100 points and brainliest. What’s Deshawn’s mistake? What’s the correct answer?
General
1 month ago
a line passes through (-8,3) and (-6,4).What is the equation of the line?
General
1 month ago
Find the inverse of f(x) = -2(x+3)^2 -1
General
1 month ago
Box 1 contains 1000 lightbulbs of which 10% are defective. Box 2 contains 2000 lightbulbs of which 5% are defective. (a) Suppose a box is given to you at random and you randomly select a lightbulb from the box. If that lightbulb is defective, what is the probability you chose Box 1? (b) Suppose now that a box is given to you at random and you randomly select two light- bulbs from the box. If both lightbulbs are defective, what is the probability that you chose from Box 1? 4 Solve the Rainbow
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1 month ago
subtract (5x^2+3)-(2x^2+4x-12)
General
1 month ago
I don’t understand this. Triangles abc and pqr are given. Triangle abc is congruent to pqr by sas. If angle abc=12x+2, angle pqr= 142-2x, ....
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1 month ago
Find the slope of the line. 5x – 2y = 7
General
1 month ago
Susan Sound predicts that students will learn most effectively with a constant background sound, as opposed to an unpredictable sound or no sound at all. She randomly divides twenty-four students into three groups of eight. All students study a passage of text for 30 minutes. Those in group 1 study with background sound at a constant volume in the background. Those in group 2 study with noise that changes volume periodically. Those in group 3 study with no sound at all. After studying, all students take a 10-point multiple choice test over the material. Their scores follow: Table Constant sound Random Sound No Sound 7 5 2 4 5 4 6 3 7 8 4 1 6 4 2 6 7 1 2 2 5 9 2 5 1. State the type of statistical test that you will use to conduct your hypothesis test.
General
1 month ago
The parametric equations x = x1 + (x2 − x1)t, y = y1 + (y2 − y1)t where 0 ≤ t ≤ 1 describe the line segment that joins the points P1(x1, y1) and P2(x2, y2). Draw the triangle with vertices A(1, 1), B(4, 3), C(1, 7). Find the parametrization, including endpoints, and sketch to check. (Enter your answers as a comma-separated list of equations. Let x and y be in terms of t.)
General
2 months ago
On a certain exam, Tony corrected 2020 papers and found the mean for his group to be 6060. Alice corrected the remaining 1010 papers and found that the mean for her group was 8080. What is the mean of the combined group of 3030 students
General
2 months ago
What is the change that occurs to the parent function f(x) = x^2 given the function f(x) = 2(x + 2)^2 + 1.The graph is compressed by a factor of 2, moves 2 units to the right, and 1 unit up.The graph is compressed by a factor of 2, moves 2 units to the left, and 1 unit up.The graph is stretched by a factor of 2, moves 2 units to the left, and 1 unit up.The graph is stretched by a factor of 2, moves 2 units to the right, and 1 unit up.
General
2 months ago
A thief steals an ATM card and must randomly guess the correct four-digit pin code from a 9-key keypad. Repetition of digits is allowed. What is the probability of a correct guess on the first try?
General
2 months ago
The diagram represents three statements: p, q, and r. For what value is both p ∧ r true and q false? 2 4 5 9
General
2 months ago
The claim is that the IQ scores of statistics professors are normally distributed, with a mean greater than 116. A sample of 20 professors had a mean IQ score of 121 with a standard deviation of 11. Find the value of the test statistic.
General
2 months ago
At the movie theatre, child admission is $5.20 and adult admission is $9.80. On Tuesday, 147 tickets were sold for a total sales of $1054.20. How many child tickets were sold that day?
General
2 months ago
(x+2) is one of the factors of the polynomial x³+13x²+32x+20. Find its remaining factors.A little help....
General
2 months ago
PLEASE ANSWER CORRECTLYPLEASE HURRYWILL GIVE BRAINLIEST An ellipse is represented using the equation . Where are the foci of the ellipse located? Check all that apply.(−29, 7)(19, 7)(−21, 7)(13, 7)(−5, −17)(−5, 31)EQUATION:
General
2 months ago
Select all the correct answers.GroGain and FolliclePlus are hair regrowth systems. Each company claims that the application of their product will cause hair regrowthfor balding men. A barber decided to test each company's claim. He randomly selected 30 of his customers who had similar baldingissues and asked 15 of them to use GroGain and 15 of them to use FolliclePlus.After observing the men for six months, the barber reported that, on average, those who used GroGain had a 20% increase in hairregrowth and those who used FolliclePlus had a 10% increase in hair regrowth.Which of the following statements are true?FolliclePlus is the more effective hair regrowth system because it yielded a greater hairregrowth increase percentage.OGroGain is the more effective hair regrowth system because it yielded a lower hair"regrowth increase percentage.GroGain is the more effective hair regrowth system because it yielded a greater hairregrowth increase percentage.FolliclePlus's claim is true.FolliclePlus is the more effective hair regrowth system.GroGain's claim is true.
General
2 months ago
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