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grigory [225]
3 years ago
8

Solve the equation and describe what your answer. What happens? 5x-7=2x+1+3x

Mathematics
2 answers:
rusak2 [61]3 years ago
8 0

Answer: The Answer is 0

Step-by-step explanation:

The key here is combining like terms. Here:

1) 5x-7=2x+1+3x

2) 5x-7=5x+1

Then you add 7 to both sides anywhere that there is no variable. You also subtract 5x to the other 5x

3) 0x=8

When you divide by zero on both sides, your answer should be 0

kvv77 [185]3 years ago
7 0
You combined like terms
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Suppose that a student is working on a statistic project using data on pulse rates collected from a random sample of 100 student
Hitman42 [59]

Answer:

<em>The question is incomplete. The statements are:</em>

a) I am 95% sure that all students will have pulse rates between 65.6 and

71.8 beats per minute . FALSE. The confidence interval is for the true value of the mean, not the individual values.

b) I am 95% sure that the mean pulse rate for this sample of students will fall  between 65.5 and 71.8 beats per minute . FALSE. The sample mean is already included in the CI, as it was used to calculate it.

c) I am 95% sure that the confidence interval for the average pulse rate of all  students at this college goes from 65.5 to 71.8 beats per minute . FALSE. The 95% only refers to the probability of the true mean to be within this interval.

d) I am sure that 95% of all students at this college will have pulse rates

between 65.5 and 71.8 beats per minute . FALSE. The confidence interval is for the true value of the mean, not the individual values.

e) I am 95% sure that the mean pulse rate for all US college students in

between 65.5 and 71.8 beats per minute.  FALSE. This confidence is valid only for the population of students of her college, as the sample was taken from this population.

f) Of the mean pulse rates for students at this college, 95% will fall between

65.5 and 71.8 beats per minute. FALSE. The 95% is not the probability for individual values .

g) Of random samples of this size is taken from students at this college, 95%  will have mean pulse rates between 65.5 and 71.8 beats per minute. FALSE. The 95% does not refer to the sampling distribution probabilities.

Step-by-step explanation:

<em />

8 0
3 years ago
Complete the table for the given rule. Rule: y=X/4(fraction)
Lady_Fox [76]

Answer:

\large\huge\boxed{\begin{array}{c|c}x&y\\\\4&1\\\\2&\frac{1}{2}\\\\9&\frac{9}{2}\end{array}}

Step-by-step explanation:

y=\dfrac{x}{4}

Put the values of x from the table to the equation:

x=4\to y=\dfrac{4}{4}=1\\\\x=2\to y=\dfrac{2}{4}=\dfrac{2:2}{4:2}=\dfrac{1}{2}\\\\x=9\to y=\dfrac{9}{4}

From the comment.

Convert the equation:

y=\dfrac{x}{4}    <em>multiply both sides by 4</em>

4y=x\to x=4y

Put the values of y from the table to the equation:

y=4\to x=(4)(4)=16\\\\y=2\to x=(4)(2)=8\\\\y=9\to x=(4)(9)=36

\large\huge\boxed{\begin{array}{c|c}x&y\\\\16&4\\\\8&2\\\\36&9\end{array}}

3 0
3 years ago
Can I please have help on 3, 4 will mark brainiest thank you.
777dan777 [17]

Answer:

4) Alternate angles

Step-by-step explanation:

Alternate angles are on the opposite corners of the line of the angle, and 10 and 14 are on opposite corners, so that makes them alternate angles. I hope this helped you!

7 0
3 years ago
The Walter family budgets the maximum amount of $124 for a camping trip. Mr. Walter already spent $40. How many people, x, can g
saul85 [17]
124-40=84     84/21=4   4=x    4 people can go
4 0
3 years ago
Read 2 more answers
Write two mixed numbers that are equal to 7.5.
Elenna [48]
7 1/2 and also 7 1/5
5 0
3 years ago
Read 2 more answers
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