At Lincoln elementary school there are 88 students in grade 1 and 116 students in grade 2 grade 3 has 164 students is the number of students in grade 1 and grade 2 greater than the students in grade 3mn

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Answer 1
Answer: Yes, as 88 + 116 = 204 students > 164 students in grade 3

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A study is being conducted to compare the average training time for two groups of airport security personnel: those who work for the federal government and those employed by private security companies. From a random sample of 12 government-employed security personnel, average training time was 72 hours, with a sample standard deviation of 8 hours. In a random sample of 16 privately employed security personnel, training time was 65.4 hours, with a sample standard deviation of 12.3 hours. Assume that training time for each group is normally distributed. Use the following notations:μ1: The mean training time for the population of airport security personnelemployed by the federal government.μ2: The mean training time for the population of airport security personnelemployed by private security companies.The goal of the statistical analysis is to determine whether the sample data support the hypothesis that average training time for government-employed security personnel is higher than those employed by private security companies.1. What is the null hypothesis H0?Select one:a. μ1- μ2 <= 0b. μ1- μ2 < 0c. μ1- μ2 =/ 0d. μ1- μ2 > 02. What is the alternative hypothesis Ha?Select one:a. μ1- μ2 > 0b. μ1- μ2 <= 0c. μ1- μ2 = 0d. μ1- μ2 >= 0
Help plz due in 6 mins

-3x = 24
Solve for X

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-3x = 24
/-3 on both sides
x = -8

Help me please thank you

Answers

Answer:

36 miles

Step-by-step explanation:

If she can drive 12 miles only using 1/3 of a gallon of gas, that means if she uses a full gallon  (3/3) she would be driving 36 miles.

12/1  x  1/3

36/1  x  3/3

Multiply the numerators by 3.

Question part points submissions used two cars start moving from the same point. one travels south at 32 mi/h and the other travels west at 24 mi/h. at what rate is the distance between the cars increasing three hours later? mi/h

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Since the cars start at the same point and are going in directions at right angles to each other, the speed at which the distance between them is increasing is a constant that can be computed as the Pythagorean sum:

... d = √(32² + 24²) = 40 . . . . mi/h

Below, the two-way table is given for a class of students. Freshmon Sophomora fontores Seniors Male 4 6 2 2 Female 3 4 6 б 3 Total If a student is selected at random, find the probability the student is a junior. Round to the nearest whole percent.​

Answers

Answer:

22% probability the student is a junior.

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes:

The table says that:

There are 4 + 6 + 2 + 2 + 3 + 4 + 6 + 6 + 3 = 36 total students.

2 + 6 = 8 are juniors.

If a student is selected at random, find the probability the student is a junior.

8/36 = 0.2222 = 22.22%

Rounding to the nearest whole percent, 22% probability the student is a junior.

Answer:

27%

Step-by-step explanation:

Find all the two-digit numbers that decrease 12 times when the last digit is crossed out.

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Answer:

Step-by-step explanation:

Point R(4,-5) is reflected across the y-axisto point S. Point S is reflected across the x-
axis to point T. What are the coordinatesn
of point T?

Answers

too hard Step-by-step explanation: