MATHEMATICS HIGH SCHOOL

74 students were chosen from a local university to participate in a study. Every student attending the university had an equal possibility of being chosen. Which sampling method was used?voluntary response
random selection
census
sample

Answers

Answer 1
Answer: My answer is Random selection

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Solve each system using substitution x=-2y=1 x=y-5

Please answer this question correctly

Answers

She has 224 ounces, which I claim is the correct answer. How will you know ?

-9y + 4x - 20 = 0

-7y + 16x - 80 = 0

x =
y =

Answers

Answer:

x=5

y=0

Step-by-step explanation: -7y + 16x - 80 = 0

x=5

-9y + 4x - 20 = 0

y=0

1. In winter with heavy snow, the animals in Yellowstone cannot freely roam to find food,
so hay is dropped for them from helicopters. A helicopter is 180 feet above the ground
drops a bale of hay while the helicopter itself is rising at 32 feet per second. The height (S)
in feet of the bale as a function of time is given by:s(t) = -16t2 + vit + Si
where t is the time since the bale was dropped off the helicopters (in seconds), V is the
initial velocity, and Si is the initial height.

Answers

Answer:

hi

Step-by-step explanation:

A system of linear equations in two variables can have _____ solutions

Answers

If the lines are parallel (have the same slope but different intercepts) . . .
     no solution, because they never cross.

If the lines have different slopes . . .
     one solution, because they have exactly one common point.   

If the lines have the same slope and the same intercept . . .
     infinitely many solutions, because every point on one line is also a point on
     the other line, one lays right on top of the other, and when you look at them on
     the graph, it looks like only one line.
one solution
or no solution
or an infinite number of solutions

Tamara is reviewing recent orders at her deli to determine which meats she should order. She found that of 1,000 orders, 450 customers ordered turkey, 375 customers ordered ham, and 250 customers ordered neither turkey nor ham. Based on these data, how many of the next 1,000 customers will order both turkey and ham? Show your work and use complete sentences.

Answers

Tamara has 1000 orders of deli
=> 450 = ordered for turkey
=> 375 = ordered for ham
=> 250 = ordered for either ham and turkey

Now, let’s start calculating the possible answer:
=> 1000 – 250 (neither ham or turkey)
=> 750 remaining ham and turkey order
=> 450 ordered turkey and 375 ordered ham
=> 450 + 375 = 825 ordered for ham and turkey
=> 825 – 750 = 75

SO, it shows that there will be sure 75 ordered of neither ham nor turkey for the next 1000 order.



A student spends no more than 2 hours on his math and English homework. If math takes about twice as long as long as english. How long will the student be able to finish hisEnglish homework?

Answers

E - English homework,  M - Math homework;
M + E ≤ 2 hours
M = 2 E
2 E + E ≤ 2 hours
3 E ≤ 2 hours = 120 minutes
E ≤ 120 : 3 
E ≤ 40 minutes
Answer:
The student will be able to finish his English homework in less or equal to 40 minutes. 

Answer:

d) 2/3

Step-by-step explanation:

Step one: write your equations

"A student spends no more than 2 hours on his math and English homework." Our sign will be less than or equal to. Our operation will be addition since the question used "and" to connect math and English.

m=x; e=y

Equation a. x + y  ≤ 2

Equation b. x = 2y (2y because math takes twice as long, therefore, we can multiply y by 2) Remember: x or y by itself has a coefficient of 1.

Step two: Substitute x into equation a.

x=2y so our new equation is: 2y + y  ≤ 2

Step three: isolate y and solve

2y + y= 3y

3y ≤ 2

Next, isolate y by dividing both sides by 3.

3y/3  ≤ 2/3

y ≤ 2/3

There is your answer, English equals y, so the maximum time he can take on his English work is 2/3 of an hour or 40 minutes.

Full question: A student spends no more than 2 hours on his math and English homework. If math takes about twice as long as English, what is the maximum time that the student can spend on English?
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