Mathematics, 20.02.2020 22:58 Cyu437

1. Which of the ordered pairs in the form (x, y) is a solution of this equation?
3x + 2y = 6

A. (4, −3)
B. (8, −5)
C. None are solutions.
D. (−2, 0)

2. Solve the equation for y.
2x+5y=5

A. y=-10x+25
B. y=-2/5 x+1
C. y=2/5 x+5
D. y=2/5 x+1

3. Which statement is true about the equation?
3y – 6x = –3

A. When x = −4, y = 7 and when x = 2, y = 3.
B. When x = −4, y = −7 and when x = 2, y = −3.
C. When x = −4, y = 9 and when x = 2, y = 3.
D. When x = −4, y = −9 and when x = 2, y = 3.

Answers: 3

Show answers

Answers

Answer from: marofthejt9089

Part 1: Option A : (4,-3) is the solution to the equation 3 x+2 y=6

Part 2: Option B : $y=-\frac{2}{5} x+1$ is the equation for y.

Part 3: Option D: When x=-4, y=-9 and when x=2, y=3

Explanation:

Part 1: The equation is 3 x+2 y=6

The solution of the equation can be determined when the ordered pair satisfies the equation 3 x+2 y=6

Substituting (4,-3) in the equation 3 x+2 y=6 , we have,

3(4)+2(-3)=6

12-6=6

6=6

Thus, the ordered pair (4,-3) satisfies the equation 3 x+2 y=6

Hence, Option A is the correct answer.

Part 2: The equation is 2 x+5 y=5

Let us solve the equation for y.

5y=-2x+5

Dividing both sides by 5, we have,

$y=-\frac{2}{5} x+1$

Thus, the equation for y is $y=-\frac{2}{5} x+1$

Hence, Option B is the correct answer.

Part 3: The equation is 3 y-6 x=-3

To determine the true statement, we need to substitute the value of x and y in the equation and find out which x and y values results in the equation to be true.

When x=-4, y=-9 and when x=2, y=3

First, let us substitute x=-4, y=-9 in the equation 3 y-6 x=-3

3(-9)-6(-4)=-3

-27+24=-3

-3=-3

Now, let us substitute x=2, y=3 in the equation 3 y-6 x=-3

3(3)-6(2)=-3

9-12=-3

-3=-3

Thus, the equation is true when x=-4, y=-9 and when x=2, y=3

Hence, Option D is the correct answer.

Answer from: Quest

see below

step-by-step explanation:

7. there are 10 data points in the set. the middle point is between 5 and 6. the middle point in the top half is 8 and the middle point in the bottom half is 3. to find the iqr , take point 8 and subtract point 3

mid term point 8 = 100 point 3 = 88

iqr = 100-88 = 12

final point 8 = 93 point 3 = 78

iqr = 93 - 78 = 15

the final has the greatest iqr

6. b - there is a high data value that causes the data set to be asymmetrical for the males: the data for males are high and asymmetrical . there is an outlier for the males that skews the data

5. the iqr is a better measure of spread for the movies and basketball games. since the basketball game has an outlier, we do not want to use standard deviation for measurement.

3. the exam median is much higher than the class median. the median line is farther to the right on the exams

2. there is no way to tell what the means are from the box and whisker plots.

Answer from: Quest

f(x)=2/3x-8, which give g(x) the greatest value.

step-by-step explanation:

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1. Which of the ordered pairs in the form (x, y) is a solution of this equation?
3x + 2y = 6