Answer:
-6
Step-by-step explanation:
7x + 9 = 5x -3
-5x -5x
2x+9=-3
-9 -9
2x=-12
divide by 2
x = -6
1. The coefficient is 5
2. The terms are 2x, 4y, and 8
3. The variables are c, cd, d and d
4. The constants are 2 and 14
Considering the desired result of the hypothesis test, we the closest mean time to 1.5 hours, hence the correct option is:
C. 1.6 hrs
<h3>What should be the mean?</h3>
The closer the mean is to the sample mean, the less likely we are to reject the null hypothesis.
In this problem, the sample mean is of 1.5 hours, hence, the closest value, considering the absolute value of the difference, is of 1.6 hours, hence option C is correct.
More can be learned about the test of an hypothesis at brainly.com/question/16313918
Answer:
$65
Step-by-step explanation:
Collin gets 4x dollars which equals 52, so 4x = 52
Dan gets 5x dollars which equals y (the answer). solve for x = 13. 5 • 13 = 65.
Using multiplication rules, it is found that the result of the multiplication will be a negative number.
<h3>What are multiplication rules?</h3>
- When two numbers of the same signal are multiplied, the result is positive.
- Hence, when an even number of negative numbers are multiplied, the result is positive. If an odd number is multiplied, the result is negative.
Hence, in this problem we have that:
- The result of the multiplication of the 13 negative integers is negative.
- The result of the multiplication of the 18 positive integers is positive.
- The multiplication of both results is the multiplication of a negative by a positive, hence it is negative.
More can be learned about multiplication rules at brainly.com/question/4158962
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