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An elementary school has a population of 635 students, 600 of whom have received the chicken pox vaccine. The school nurse wants to make sure that the school meets all state requirements for vaccinations at public schools.Find the population proportion, as well as the mean and standard deviation of the sampling distribution for samples of size n=120.
General
2 months ago
An overhead garage door has two springs, one on each side of the door. A force of 15 pounds is required to stretch each spring 1 foot. Because of a pulley system, the springs stretch only one-half the distance the door travels. The door moves a total of 8 feet, and the springs are at their natural lengths when the door is open. Find the combined lifting force applied to the door by the springs when the door is closed.
General
2 months ago
2. The sales tax rate in New Mexico is 5.125%. Select all the equations that represent the sales tax, t, youwould pay in New Mexico for an item of cost c?A. t = 5.125cB. t = 0.5125cC. t = 0.05125cD. t = c = 0.05125(E. t = 5.025 c
General
2 months ago
After 14 boys leave a concert, the ratio of boys to girls is 3 : 10. If there arep girls at the concert, write an algebraic expression for the number of boys atthe beginning of the concert in terms of p.
General
2 months ago
Classify the following system of equations.8x - 12y = -918x + 27y = 21
General
2 months ago
A ball is shot upward from a slingshot at a velocity of 15 m/s the height of the ball after t seconds is given by h(t)=10+ 5t+1/4 t^2 predicted the instantaneous velocity after eight seconds
General
2 months ago
Through :(4,2),parallel to y =-3/4x-5Solve for y
General
2 months ago
Angie can paint one room with 2/3 of a canister of one shade of green paint. she will need 5/8 of a canister of the same shade of green paint for a second room. Does Angie have enough of this shade of green paint to finish the second room? If not, how much additional paint will she need? Express your answer in decimal form.
General
2 months ago
Are triangles DEF and LNM similar if DF = 8 and LM = 4?
General
2 months ago
In a class of 30 students, 3 of the 16 boys are left-handed and 2 of the 14girls are left-handed. One student is chosen at random. Which of thefollowing represents a conditional probability?OA. The probability that the student is left-handed, given that thestudent is a boyB. The probability that the student is a girl and left-handedOC. The probability that the student is right-handedOD. The probability that the student is not a boy
General
2 months ago
German Silver is an alloy composed of nickel, zinc, and copper in a ratio of 3:4:13.How many kilograms of each metal are needed to make 4 kg of this alloy?
General
2 months ago
Determine whether the origin is included in the shaded region and whether the shaded region is above or below the line for the graph of the following inequality: y < 3/2x + 2 The origin is not included in the shaded region and the shaded area is above the line. The origin is not included in the shaded region and the shaded area is below the line. The origin is included in the shaded region and the shaded area is above the line. The origin is included in the shaded region and the shaded area is below the line.
General
2 months ago
Regression equations are usually used to predict values of unavailable data. If the data do not closely model a particular type of function, then that type of function is not appropriate to use in statistical regression. The more closely data fit a model, the more _______________ predicted values will be.a. accurateb. quadraticc. scatteredd. variable
General
2 months ago
Use the Intermediate Value Theorem to choose the intervals over which the function, x^4 - 2x^2 - 1, is guaranteed to have a zero. Select all that apply.a. [-2,-1]b. [-1,0]c. [0,1]d. [1,2]
General
2 months ago
A biker’s speed is 1.5 times faster than a walker’s speed. They start moving simultaneously in the same direction from the same point and, after 1.5 hours, the distance between them is 12.5 miles. What are their speeds?
General
2 months ago
How many different ways are there to make 30 cents with pennies nickels dimes or quarters?
General
2 months ago
In circle c, sq = 10 cm. which statements about the circle are correct? check all that apply. arc pq is congruent to arc sr. the measure of arc qr is 150°. the circumference of circle c is 20π cm. arc ps measures about 13.1 cm. arc qs measures about 15.7 cm.
General
2 months ago
"act" the 3rd and 4th terms of an arithmetic sequence are 13 and 18 respectively what is the 50th term of the sequence
General
2 months ago
17. A bag contains 10 white golf balls and 6 striped golf balls. A golfer wants to add 112 golf balls to the bag. He wants the ratio of white to striped golf balls to remain the same. How many of each should he add?
General
2 months ago
Paint is mixed 3 parts blue to 1 part white in order to lighten it. Sam needs 12 litres of paint. How much blue and white paint will be needed?He will need ?? litres of blue paint.He will need ?? litres of white paint.
General
2 months ago
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