MATHEMATICS MIDDLE SCHOOL

Which of the sets of ordered pairs represents a function? A = {(3, −5), (4, 6), (−3, 9), (2, 7)}
B = {(2, 4), (−1, −7), (5, 6), (4, 3)}

Only A

Only B

Both A and B

Neither A nor B

Answers

Answer 1

Answer:

Answer:

Both A and B

Step-by-step explanation:

A = {(3, −5), (4, 6), (−3, 9), (2, 7)}

-Each x goes to a different y so this is a function

B = {(2, 4), (−1, −7), (5, 6), (4, 3)}

-Each x goes to a different y so this is a function

Answer 2

Answer:

Both!!

If you look at it, none of the x values are repeating with a differnt outcome, so you know that they both are correct.

Also I just took the quiz c:

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If I arrange the numbers 4,5,6,7,8,9,10,11 and 12 in the squares so that the sums of all the rows,columns and diagonals are 24 what is the answer?(magic squares)

Pls help me on number 14

Answers

4,498,250,098

Hope that helped:D

What is the answer to 978 -(6x8) + 99 =

Answers

978-(6*8)+99=
978-48+99=1029

Use the order of operations PEMDAS parentheses, exponents, multiplying and dividing left to right, and lastly, adding and subtracting left to right. First, parentheses. 6x8 = 48. So now we have 978 - 48 + 99. Its all adding and subtracting, so we can do it simple... 978 - 48 = 930. 930 + 99 is 1029. That's the answer.

1029

Hope this helped!

lin has 8 green apples and 2 red apples .if he slices the green apples in eighths ,how many apple slices will he have ?

Answers

64 because each apple is sliced into 8ths and there are 8 apples so 8x8=64

What is the value of the numerical expression 5/8-5/12(3-1/4)+2/3

Answers

make bottom numbers same
find least common multipules of 8,12,4 and 3
8=2 times 2 times 2
12=2 times 2 times 3
4=2 times 2
3=3
lcm=2 times 2 times 2 times 3=24

5/8 times 3/3=15/24
5/12 times 2/2=10/24
3/1 times 24/24=72/24
1/4 times 6/6=6/24
2/3 times 8/8=16/24
we now have
15/24-10/24(72/24-6/24)+16/24
pemdas
simplify parenthasees first
72/24-6/24=66/24

now we have
15/24-10/24(66/24)+16/24
multiply
15/24-660/576+16/24
make same bottom number
15/24 times 24/24=360/576
16/24 times 24/24=384/576
360/576-660/576+384/576
84/576
7/48

answer is 7/48

The average cost of an education to become a veterinarian is $147,656, which includes veterinary school. To cover these cost, most students take out loans. What would the interest on a loan be if the rate is 3.25% and the term is 15 years.

Answers

I= interest
P=Principal
R=Rate
T=Time

I =147,656(0.0325)(15)
I =71982.3

The frequency polygon shows the distances thrown by the entrants in the University and College Discus Finals at the 2003 Drake Relays. What percent of the entrants had distances between 150 and 160 feet? Round your answer to two decimal places

Answers

Answer:

70.83% entrants will have distances between 150 and 160.

Step-by-step explanation:

This question is incomplete without an attachment; here is the attachment enclosed with the answer.

From the graph attached,

Number of entrants having distances between 150 and 160 feet = 8 + 9 = 17

Number of entrants between 140 and 200 feet = 8 + 9 + 4 + 2 + 1 = 24

Percent of entrants having distance between 150 and 160 feet = $\frac{\text{Number of entrants between 150 and 160}}{\text{Number of total entrants}}* 100$

= $(17)/(24)* 100$

= 70.83%

Therefore, 70.83% entrants will have distances between 150 and 160.

Final answer:

To find the percent of entrants with distances between 150 and 160 feet in the frequency polygon, calculate the area of the rectangle between the two values and divide it by the total area under the polygon. Multiply the result by 100 to get the percent.

Explanation:

To find the percent of entrants with distances between 150 and 160 feet, we need to look at the area under the frequency polygon between the two values. Since the frequency polygon represents the distribution of distances, we can estimate the percent by calculating the proportion of the area under the polygon between 150 and 160 feet. First, find the total area under the polygon by adding up the areas of all the rectangles formed by the frequency values and the width of each interval. Then, calculate the area of the rectangle between 150 and 160 feet by multiplying the frequency of that interval by its width. Finally, divide the area of the rectangle by the total area under the polygon and multiply by 100 to get the percent.

Example:

Total area under the polygon = Sum of (Frequency x Width) = (5 x 10) + (10 x 10) + (30 x 10) + (40 x 10) + (15 x 10) = 500
Area of rectangle between 150 and 160 feet = Frequency x Width = 40 x 10 = 400
Percent of entrants with distances between 150 and 160 feet = (Area of rectangle / Total area) x 100 = (400 / 500) x 100 = 80%