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DanielleElmas [232]
3 years ago
5

Is the relationship shown by the data linear? If so, model the data with an equation. x= -7, -5, -3 ,-1 , y = 5, 9, 13, 17

Mathematics
1 answer:
PIT_PIT [208]3 years ago
3 0
First we take the two points (-7,5) and (-5,9).
Compute the slope: \frac{9-5}{-5+7}=2
Then the linear relation may be in the following form y=2x+b
Since the point (-7,5) is on the line, then 5=-7(2)+b\text{ then }b=19.
The relation is then y=2x+19.
We check that the other point are on the above line:
2(-3)+19=13 \text{ OK}\\2(-1)+19=17  \text{ OK}
We have then a linear relation.
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Here are four digits.
Bogdan [553]

Answer:

A: 357

(1) 9641

Step-by-step explanation:

With A you really just want to go from the smallest number up so it would be the smallest number possible.

<em>EX.</em> 357 vs. 736   357 is smaller

With 1 you have to go from the highest number to lowest number to get the biggest answer possible.

<em>Ex.</em>  9641 vs. 1946    9641 is larger.

3 0
3 years ago
PLEASE MAKE SURE HELP ME!
bulgar [2K]

Answer:

1. The first problem is wrong, it should be 0.5(3(15) + 2(20)) because the parentheses make sure that every purchased item is being divided by 2 (multiplying by 0.5 is the same as dividing by 2)

2. The second problem is partially correct. The first two answers you have checked are correct, but the last one is wrong. The third answer should be 6 + 12 instead because that's just a simplified version of 2(3) + 6(2), meaning they are equal

3. I cannot read your answers in the "Why or Why Not" column in the third problem, but the answers you gave in the "Evaluate" and "Does It Work?" columns are all correct.

7 0
3 years ago
I have 6.5 yards of fabric and if the fabric costs $3.99 per yard how much will I spend
Masteriza [31]

Answer: You will spend 25.94$

Step-by-step explanation:

6.5 yards by 3.99 per yard = 6.5 times 3.99 = 25.935 witch rounds too 25.94$

4 0
2 years ago
Read 2 more answers
Shane worked 8 hours per day for 3 days. Andrew worked 6 hours per day for 4 days. If the normal working week is 36 hours, which
creativ13 [48]
Shane:
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24h out of 36  24/36 GCF is 12 divide to and bottom by 12
24 / 12 is 2   36 / 12 is 3  2/3    Shane worked for 2/3 of 36h
Percentage: 100% / 3 (because there is 3 parts)= 33.333333333333 
33.33333333333 x 2 (because it is there is 2 parts needed) = 66.6666666666%
Shane has worked for 66.6666666666% of 36 hours
 
 Andrew:
 4 x 6 = 24 
Hey did you realise, the 24 is exactly the same! So the fraction would still be 2/3 of 36, and so on, there percentage is still the same, it's still 66.6666666666%

Answer: Both of Andrew and Shane has worked for the exact same time, therefore they have the exact same percentage         <span />
4 0
3 years ago
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Each question on a test was worth 5 points. What was the total number of points if there were n questions?
jarptica [38.1K]

The total number of points would be equal to 5n.

You would simply multiply 5 by the amount of questions. In this case, we do not know the amount, so we can use the variable n.

8 0
3 years ago
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