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4 years ago

The ordered pairs (1,1),(2,4),(3,9),(4.16) and (5,25) represent a function what is a rule that represents this function

1 answer:

galina1969 [7]4 years ago

8 0

For each of the ordered pairs, the x coordinate is squared to find y.

x = 1
1^2 = 1

x = 2
2^2 = 4

x = 3
3^2 = 9

x = 4
4^2 = 16

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Mrs. Phillips is grading the semester exams for her Advanced Algebra course.

egoroff_w [7]

This is a very good visual representation. Whether it is the best, or not, depends on the purposes: First, you can see right away where the top 25% (4th quartile) scored by looking at the right hand whisker. Second, you get two measures of variation for the data, the range and the interquartile range. Finally, by looking at the left whisker, you can see that most of the variation comes from the bottom quartile: 3/4 of the students scored between 80 and 100, while 1/4 scored between 80 and 50. As a teacher, I would want more detail about the bottom quartile. It might be that one student scored 50 and everyone else scored between 70 and 80. But I wouldn't need to have it graphically represented. This graph shows me that the class overall is in good shape: The median is close to 90. But there is at least one student, and up to 25 % of the class who did poorly on an exam that otherwise looks very easy.

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3 years ago

Find two consecutive integers whose product is 50

GarryVolchara [31]

n, n+1 - two consecutive integers

n(n + 1) = 50 use distributive property

n² + n = 50 subtract 50 from both sides

n² + n - 50 = 0

-----------------------------------------------------

ax² + bx + c =0

if b² - 4ac > 0 then we have two solutions:

[-b - √(b² - 4ac)]/2a and [-b - √(b² + 4ac)]/2a

if b² - 4ac = 0 then we have one solution -b/2a

if b² - 4ac < 0 then no real solution

----------------------------------------------------------

n² + n - 50 = 0

a = 1, b = 1, c = -50

b² - 4ac = 1² - 4(1)(-50) = 1 + 200 = 201 > 0 → two solutions

√(b² - 4ac) = √(201) - it's the irrational number

Answer: There are no two consecutive integers whose product is 50.

3 0

4 years ago

How to write two collum proofs

sveta [45]

Answer:

When writing your own two-column proof, keep these things in mind:

Number each step.

Start with the given information.

Statements with the same reason can be combined into one step. ...

Draw a picture and mark it with the given information.

You must have a reason for EVERY statement.

Step-by-step explanation:

8 0

3 years ago

Gina is making $20 an hour. She receives a 10% raise. If gina works 40 hours a week, how much more money will she make each week

Elden [556K]

Answer:

880

Step-by-step explanation:

20 x 10% = 2

20 + 2 = 22

22 x 40 = 880

6 0

3 years ago

Draw two identical rectangle. Shade 1 seventh of one rectangle and 1 tenth of the other. Lavel the unit fractions. Use you recta

Bumek [7]

Answer:

1/7 is greater than 1/10 using coordinates and its area of the division concept.

Step-by-step explanation:

We have to draw two identical rectangles and have to shade them.

Here is the diagram attached with. (With some approximation)

We can see that $\frac{1}{7} > \frac{1}{10}$ .

Rectangles are identical.

When we look upon $\frac{1}{10}$ it can be observed that each division on the coordinate plane have 2 boxes only...

Where as $\frac{1}{7}$ fraction consists more than 2 boxes ..

So we can say that the area covered for each division in $\frac{1}{7}$ is more than that of $\frac{1}{10}$ .

Mathematical concept:

If the numerator are same then to compare fractions we look upon denominators values.

Greater the denominator lesser is the fraction values.

So,

Finally we can say that 1/7 is greater than 1/10 .

5 0

3 years ago