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MATH SOLVE
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A weather plane took to the skies to measure the speed of the jet stream. The plane flew 1920 km with the jet stream as a tail wind. Then, it returned to its original location. The eastbound flight took 2 hours, and the westbound flight took 3.2 hours. Which system of equations can be used to find the speed of the jet stream and the speed of the plane? What was the speed of the jet stream? (p = plane, w = wind)
General
2 months ago
What is the solution of the system?{−3x+9y=364x+12y=24Enter your answer in the boxes.
General
2 months ago
A high school purchases a printing machine that can put lettering on clothing for $6000. The school plans to print T-shirts with the school logo and sell them. Each T-shirt costs the school $4 and will sell for $12. How many T-shirts must the school sell before breaking even
General
2 months ago
A toy manufacturer inspects boxes of toys before shipment. each box contains 19 toys. the inspection procedure consists of randomly selecting three toys from the box. if one or more of the toys are defective, the box is not shipped. suppose that a given box has two defective toys. what is the probability that it will be shipped?
General
2 months ago
If f(x) = 11x/(2 + x 2), find f '(3) and use it to find an equation of the tangent line to the curve y = 11x/(2 + x 2) at the point (3, 3).
General
2 months ago
A bacteria population is 6000 at time t = 0 and its rate of growth is 1000 Â· 9t bacteria per hour after t hours. what is the population after one hour? (round your answer to the nearest whole number.)
General
2 months ago
Apple weights in an orchard are normally distributed. from a sample farmer fred determines the mean weight of a box of apples to be 270 oz. with a standard deviation of 10 oz. he wonders what percent of the apple boxes he has grouped for sale will have a weight less than 255 oz. carl calculates the z-score corresponding to the weight 255 oz. = - using the table (column .00), carl sees the area associated with this z-score is 0. carl rounds this value to the nearest hundredth or 0. now, carl decides to find the percent associated with boxes less than 255 oz. so he rounds to hundredths and subtracts 0.50 - 0. = %.
General
2 months ago
A circle has diameter 11cmA square has side length 7cmUse Pythagoras' Theorem to show that the square will fit inside the circle without touching the edge of the circle.
General
2 months ago
Choose the linear inequality that describes the graph. The gray area represents the shaded region. 4x + y < 4 4x + y > 4 4x – y ≥ 4 4x + y ≥ 4
General
2 months ago
Write and solve an equation to find the value of the variable 104, 137, 154, 131, x; meaan=130
General
2 months ago
which statement is an example of big-picture feedback? A. "You have several typos throughout your paper , be sure to proofread before you turn in the next dra of your essay." B. "Your sentences are beautifully written and have a nice flow to them, making them really enjoyable to read."C. "You do a good job of establishing your central claim early in the essay; be sure to back it up with supporting evidence."D. "Your paragraphs are very long and hard to follow. I would suggest shortening them or breaking them up."
Algebra
2 months ago
Which statement is true about the function fx = StartRoot negative x EndRoot? It has the same domain as the function fx = Negative StartRoot negative x EndRoot. It has the same range as the function fx = Negative StartRoot negative x EndRoot. It has the same domain as the function fx = Negative StartRoot x EndRoot. It has the same range as the function fx = .
Algebra
2 months ago
Which statement is true about the graphs of the two lines y = x + 2 and y = x ?The lines are perpendicular to each other because and are opposite reciprocals of each other.The lines are perpendicular to each other because 2 and are opposite reciprocals of each other.The lines are neither parallel nor perpendicular to each other because and are not opposite reciprocals of each other.The lines are neither parallel nor perpendicular to each other because 2 and are not opposite reciprocals of each other.
Coordinate-geometry
2 months ago
Which statement is true about whether Z and B are independent events?Z and B are independent events because PZ∣B = PZ.Z and B are independent events because PZ∣B = PB.Z and B are not independent events because PZ∣B ≠ PZ.Z and B are not independent events because PZ∣B ≠ PB.
Algebra
2 months ago
Which statement is true concerning the vertex and the axis of symmetry of gx=5x2−10x? The function written in vertex form is gx=5x−12−5. The vertex is at 1, –5 and the axis of symmetry is x=1. The vertex is at 1, –5 and the axis of symmetry is y = 1. The vertex is at 0, 0 and the axis of symmetry is x = 1. The vertex is at 0, 0 and the axis of symmetry is y = 1.
Algebra
2 months ago
Which statement is true regarding the diagram of circle P? The sum of y and z must be 2x. The sum of y and z must be One-halfx. The difference of z and y must be 2x. The difference of z and y must be One-halfx.
Geometry
2 months ago
Which statement most accurately describes this excerpt?ampuchingIt contains one dependent clause.It contains one independent clause.It contains one independent clause and one dependentclause.It contains one independent clause and two dependentclauses.
Algebra
2 months ago
Which statements about moon phases In a lunar month are true?Choose more than one answer.1.The same pattern of phases repeats monthly2.Waxing moon phases are visible between the new and full moon3.A lunar eclipse occurs at least once per lunar month4.Phases are created in part by Earth's shadow on the moon5.Each lunar month begins and ends with a new moon6.A full moon appears toward the middle of a lunar month
Algebra
2 months ago
Which statements accurately describe animals? Check all that apply. All animals are prokaryotes. All animals are multicellular. All animal have cells that contain a nucleus and organelles. All animals are capable of asexual reproduction All animals must maintain stable internal conditions. All animals stay in one place throughout their lifetime. All animals make their own food.
Algebra
2 months ago
Which statements are always true regarding the diagram? Check all that apply. m∠5 + m∠3 = m∠1 m∠3 + m∠4 + m∠5 = 180° m∠5 + m∠6 =180° m∠2 + m∠3 = m∠6 m∠2 + m∠3 + m∠5 = 180°
Geometry
2 months ago
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