MATHEMATICS MIDDLE SCHOOL

Please help! Would you describe the associations in this table as… (pick two)Linear? Negative? Nonlinear? Positive?



I know it would be nonlinear because neither Variable X OR Y have a constant rate of change.
Unfortunately, I don't know whether it is positive or negative.
pandaplayb avatar

Answers

Answer 1
Answer: i would say negative

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Michelle went on a hike she started on the trail at 6:45 a.m. and returned at 3:28 p.m. how long did she hike
Give three possible solutions to: x + 5 < 10

ms. mckee wants to give each student in her class some candy. She wants everyone to recieve an equal number of jelly beans. She has less than 100 jellybeans. If she makes groups of 2,3, or 4 she will have 1 jelly bean left over. If she makes groups of 5, she will have no jellybeans left over, How many jellybeans could she have?

Answers

ok so since she makes groups of 5 an no left over, the number is divisble by 5
means that it ends with 5 or 0
possible ones are
5,10,15,20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,95

groups of 2, will have 1 jelly bean left over
it is not divisble by 2, means it doesn't end with 0 (ending with 0 means it is divisible by 10, and 10 is divisible by 2)
5,15,25,35,45,55,65,75,85,95

groups of 3
not divisble by 3 (a hack to test, is that you add the digits and if the sum is divisble by 3, then the number is divisble), the list below is eliminated numbers divisble by 3

5,25,35,55,65,85,95
if makes group of 2 will have exactly 1 left over
5/3 has remainder of 2, eliminate
25 works so far (2*12=24,3*8=24,4*6=24)
35/4 has remainder of 3, eliminate
55/4 has remainder of 3, eliminate
65/3 has remainder of 2, eliminate
85 works
95/3 has remainder of 2,eliminate

the ones that work are 25 aand 85

she could have 25 or 85 jelly beans
so we are told that if the teacher makes the number of jelly beans she has (call that x) into groups of 2, 3, or 4 she'll have 1 jelly left over. to put that in math terms, x leaves a remainder of 1 when divided by 2, 3, or 4. This then implies that (x-1) is a multiple of 2, 3, or 4 (think about it!!!). all common multiples of 2, 3, or 4 must be a multiple of the LEAST common multiple of 2, 3 and 4. the least common multiple of those 3 numbers is 12. this means our common multiples can be:
12, 24, 36, 48, 60, 72, 84, 96 (we stop listing here because the number of jelly beans is less than 100)
this also means the possible number of jelly beans she can have is the numbers in the previous list plus 1 (remember it is x-1 NOT x that is the common multiple of 2, 3, 4):
13, 25, 37, 49, 61, 73, 85, 97
now we use our last clue which is if the teacher groups her jelly beans in groups of 5 there will be none left over. this is equivalent to saying that the number of jelly beans is a multiple of 5. we look through our 2nd list and find that only 25, and 85 is a multiple of 5.  therefore the number of jelly beans the teacher can have is 25 and 85.
note that we took the problem in steps and used process of elimination to determine which of the natural numbers less than 100 can be the answer to the question. this is a very very good strategy in problem solving, but it can be challenging to know what order to take the "steps" but that can be mastered with patient practice.

let me know if you have any questions!!!!

If , find the value of 2 square root of 17-x = 2x-10, find the value of x/4.

Answers

2 √(17-x) =2x-10\ \ \ \ \Rightarrow\ \ \ D:(17-x \geq 0\ \ \ and\ \ \ 2x-10 \geq 0)\n.\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ x \leq 17\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ x \geq 5\n\n.\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ D=<5;\ 17>\n\n2 √(17-x) =2(x-5)\ /:2\n\n √(17-x) =x-5\ \ \ \Rightarrow\ \ \ (√(17-x))^2 =(x-5)^2\n\n17-x=x^2-10x+25\n\n

x^2-9x+18=0\n\n x^2-3x-6x+18=0\n\nx(x-3)-6(x-3)=0\n\n(x-3)(x-6)=0\ \ \ \ \Leftrightarrow\ \ \ (x-3=0\ \ \ \ or\ \ \ \ x-6=0)\n\nx=3\ \notin\ D\ \ \ \ \ \ \ \ \ \ \ x=6\ \in\ D\ \ \ \Rightarrow\ \ \ (x)/(4) = (6)/(4) =1.5\n\nAns.\ (x)/(4) =1.5

Find three consecutive odd integers such that the sun of the largest and twice the smallest is 25

Answers

Let's call the our odd numbers a, b, and c, in ascending order. It can be said then that b = a +2 (It is the next odd number after a) and c = a + 4 (It is the second consecutive number after a).


Additionally, we can say:

c + 2a = 25


Now, how about we substiute in the value for c we found in the first paragraph for c in the preceeding equation? This gives us:

(a + 4) + 2a = 25

  • Substitute

3a + 4 = 25

  • Add like terms

3a = 21

  • Subtract 4 from both sides

a = 7

  • Divide both sides by 3

We have found that the smallest number is 7. Substituting this into the equations we found in the first paragraph, we find:

b = 7 +2 = 9

c = 7 + 4 = 11


The numbers are 7, 9, and 11.

Answer:

The three correct numbers are 7, 9, and 11.



Step-by-step explanation:

How to work out 25 divided by 1,280

Answers

25 divided by 1,280

See how many times 25 will go into 128 and you get 5 with 3 left over.  Then see how many times 25 will go into 30 (because you carried down the 0) and you get 1 with 5 left over.  Your final answer is 51 with a remainder of 5.

Darius buys a bottle of a chemical solution that contains 70%, percent alcohol. The bottle contains 500 milliliters of solution.

Answers

I'm assuming that you're asking how many milliliters of alcohol is in the solution. The answer would be 350 milliliters

Answer:350

Step-by-step explanation:What’s

8:4 6:4 8:2 6:3 biggest ratio

Answers

Easy, make the ratios as a decimal. 8:4=2, 6:4=1.5, 8:2=4, and 6:3=2. Now, we have 2, 1.5, and 4, and 2. We can eliminate 8:4 and 6:3 since they are the same ratios, 1.5 equals 1.50, 4=4. Ask your self. Is 1.50 greater than 4? Well your answer is no. 4 is greater than 1.50. So, the biggest ratio is 8:2
8:2 is the biggest ratio, because if you reduce each ratio to the smallest ratio 4:1 is the biggest. 8:4 = 2:1... 6:4 = 3:2...  8:2 = 4:1... 6:3= 2:1...
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