MATHEMATICS HIGH SCHOOL

Is this set of ordered pAirs a function
(0,2) (3,3) (8,7) (2,2) (3,9)

Answers

Answer 1
Answer:

Answer:

No, not a function

Step-by-step explanation:

Functions cannot have two or more same domain and different range. (3,3) and (3,9) have same domain and different range.

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Which conjunction or disjunction is equivalent to |t – 7| > 12?A. t – 7 > 12 or t – 7 < –12B. t – 7 < 12 and t – 7 > –12C. t – 7 < 12 or t – 7 > –12D. t – 7 > 12 and t – 7 < –12

7x^2-31x+20 I Know The Answer, I Just Don't Know The Steps To Solving This Equation.

Answers

7x^2-31x+20=0
First, remove the coefficient by division
So
(7x^2)/(7)-(31x)/(7)+(20)/(7)=0
Then, cancel out (20)/(7)
So,
x^2-(31x)/(7)+(20)/(7)-(20)/(7)=-(20)/(7)
Then take half of the coefficient, then square it.
(-(31)/(7))/(2)=(37)/(14)
(-(37)/(14))^2=(961)/(196)
So, The equation already looks like this:
x^2-(31)/(7)+(961)/(196)=-(20)/(7)+(961)/(196)
So,
x^2-(31)/(7)+(961)/(196)=(401)/(196)
Then factor the left side of the equation:
(x-(31)/(14))^2=(401)/(196)
Then square both sides:
x-(31)/(14)=\sqrt{(401)/(196)}
7x^2-31x+20=0\n \n \Delta=(-31)^2-4.7.20=961-560=401\n \n x=\frac{31 \pmsqrt{401}}{2*7}=(31 \pm√(401))/(14)

4. A video game sells at Arnolds for $14.99. Arnold's marks the game up at 40% of the selling price. What is the cost of the game to Arnold?A. $6.00 B. $9.10 C. $6.50 D. $8.99

Answers

the answer is 

40% of the selling price is  $14.99*40 / 100 = $5,996

so the answer is A. $6.00

Answer:

8.99

Step-by-step explanation:

What’s the correct answer for this?

Answers

Answer:

B

Step-by-step explanation:

Look at |IH| as a clock arrow, it goes clockwise and the triangle is smaller so you have to dilate it by 2/3 because the G'H'I' is smaller

Solve the following equations graphically. Verify the solution sets using the original equations.a. |x| = x2

Answers

Answer: x = 0 or x = 1

Step-by-step explanation:

The graphic solution is attached.

Verifying the solution

|x| = x²

x = -x²                                 or   x = x²

x does not exist                       x = 1 or x = 0

because x² is always +

What are the next three numbers in this pattern? 11, 22, 12, 23, . . .

Answers

Answer:

13 , 24 , 14

Step-by-step explanation:

Note that technically there are two patterns. Each one adds 1.

The first pattern starts with 11. The third number is 12, which means that the fifth number will be 13, and the 7th number will be 14.

The second pattern starts with 22. The 4th number is 23, which means the sixth number will be 24.

~

Easy, it's going by adding 11's 11+11=22 than it subtracts by 10=12 and it keeps repeating until it's done.

What is the average rate of change for (0,80) and (15,10)

Answers

Answer:

-14/3

Step-by-step explanation:

formula: (y₂ - y₁) / (x₂ - x₁)

(10 - 80) / (15 - 0)

(-70) / (15)

simplify

-14/3
Y/X
10-80/15-0
-70/15
=-14/3
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