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Sidana [21]
3 years ago
13

A school counselor heard that teenagers sleep an average of 9 hours per night on the weekend. The counselor

Mathematics
1 answer:
Katen [24]3 years ago
7 0

Answer:

H0​:μ=9 hours Ha​:μ not equal to 9 hours​

Step-by-step explanation:

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Examine the system of equations. y = 3 2 x − 6, y = −9 2 x + 21 Use substitution to solve the system of equations. What is the v
nadezda [96]

Answer:

<h2>y = -4/9</h2>

Step-by-step explanation:

Given the system of equations y = 3/2 x − 6, y = −9/2 x + 21, since both expressions are functions of y, we will equate both of them to find the variable x;

3/2 x − 6 = −9/2 x + 21,

Cross multiplying;

3(2x+21) = -9(2x-6)

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collecting the like terms;

6x+18x = 54-63

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x = -9/24

x = -3/8

To get the value of y, we will substitute x = -3/8 into any of the given equation. Using the first equation;

y = 3/2x-6

y = 3/{2(-3/8)-6}

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y = 3/{(-3-24)/4}

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y = -4/9

Hence, the value of y is -4/9

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3 years ago
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Harry purchased 16 hinges for his kitchen project. They were each on sale for $3 off the regular price.
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THE ANSWER IS 8 DOLLARS BCUZ 80/16 EQUALS 5, AND 5+3 EQUALS 8!!!!
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Without further study, you forget things as time passes. A model of human memory gives the percentage, p, of acquired knowledge
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Answer:

42.69% of information is acquired by the student in two weeks.

Step-by-step explanation:

We are given the following in the question:

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Thus, 42.69% of information is acquired by the student in two weeks.

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\frac{q}{7}  + 1 >  - 5➡q >  - 42

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Answer:

Hypotenuse would be 14

Step-by-step explanation:

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