Which inequality's graph will have a dashed boundary line? x + 7y > 3 7x + y ≤ 3 6x − 5y ≥ 4 y − x ≤ 3 NextReset

1 answer:

6 0

The answer for this question would be x + 7y > 3. You can figure this out because it is GREATER THAN. If it was greater than or equal to then the line would be solid (same with less than or equal to).

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Three added to eight times a number is the same as three times the value of two times the number minus one

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Lisa is collecting data by interviewing people on the streets. She

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Answer:35 you are welcome

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Homework Progress 0 Find the nth term of the following sequence: 4 7 12 19 28

just olya [345]

Answer:

n²+3

Explanation:

The differences between the terms are not the same, so this is not "linear". Knowing that the sequence may have started with a 1, you can try subtracting the first number with a number to get 1, and use that number to subtract the rest.

4 - 3 = 1
7 - 3 = 4
12 - 3 = 9
19 - 3 = 16
28 - 3 = 25

In this case, subtracting 3 to all the numbers gave us perfect squares! So this means the nth term has to do with squaring the number and adding three afterward! This can be checked.

√1 = 1
√4 = 2
√9 = 3
√16 = 4
√25 = 5

As we found the values of these terms by subtracting three first and then finding its square root, the nth term will be the opposite; squaring and then adding three! Again, this can be checked!

1² + 3 = 4
2² + 3 = 7
3² + 3 = 12
4² + 3 = 19
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Hope this helps !! :D

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2 years ago

For her phone service, Martina pays a monthly fee of $25, and she pays an additional $0.07 per minute of use. The least she has

Mekhanik [1.2K]

Answer: Anything that is 1202 or larger

In other words, $m \ge 1202$

So we could have m = 1202, or m = 1203, or m = 1204, etc.

===============================================

Explanation:

m = number of minutes used
0.07m = amount charged for those minutes used excluding the $25
0.07m+25 = total monthly bill now including the extra $25 fee

The monthly bill is at least $109.14, since this is the lowest amount she has been charged.

$\text{monthly bill} \ge 109.14\\\\0.07m+25 \ge 109.14\\\\0.07m \ge 109.14-25\\\\0.07m \ge 84.14\\\\m \ge \frac{84.14}{0.07}\\\\m \ge 1202\\\\$

This says that the least number of minutes Martina has used is 1202 minutes.

So if m was a whole number, then m could be selected from the set {1202, 1203, 1204, ...}

Side note: 1202 minutes = 1202/60 = 20.033 hours approximately.

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Answer:

0.0824 (may be incorrect)

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