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2 years ago

The box plot below shows the total amount of time, in minutes, the students of a class surf the Internet every day:

Mathematics

1 answer:

VLD [36.1K]2 years ago

6 0

Answer:

Step-by-step explanation:The box plot below shows the total amount of time, in minutes, the students of a class surf the Internet every day: Part A: List two pieces of information that are provided by the graph and one piece of information that is not provided by the graph. (4 points) Part B: Calculate the interquartile range of the data, and explain in a sentence or two what it represents.

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In the expression ax+bx,a is a decimal and b is a fraction. How do you decide whether to write a as a fraction or b as a decimal

mezya [45]

Answer:

f(x) = x^2 - x - 12

Step-by-step explanation:

The function is f(x) = (x + 3)(x - 4), or f(x) = x^2 - x - 12. Here, a = 1, b = -1, and c = -12.

HOPE THIS HELPED ;3

7 0

3 years ago

What's the equation of the line that's a perpendicular bisector of the segment connecting C (6, –12) and D (10, –8)? answers: A)

vitfil [10]

Answer:

Step-by-step explanation:

Perpendicular bisector of a line divides the line into 2 equal parts and it is perpendicular to the line.

First let's find the midpoint of CD. The point is where the perpendicular bisector will cut through the line.

midpoint= $( \frac{x1 + x2}{2} , \frac{y1 + y2}{2} )$

Thus, midpoint of CD

$= ( \frac{6 + 10}{2} , \frac{ - 12 - 8}{2} ) \\ = ( \frac{16}{2} , \frac{ - 20}{2} ) \\ = (8, - 10)$

Gradient of line CD

$= \frac{y1 - y2}{x1 - x2} \\ = \frac{ - 12 - ( - 8)}{6 - 10} \\ = \frac{ - 12 + 8}{ - 4} \\ = \frac{ - 4}{ - 4} \\ = 1$

The product of the gradients of perpendicular lines is -1.

gradient if perpendicular bisector(1)= -1

gradient of perpendicular bisector= -1

y=mx +c, where m is the gradient and c is the y-intercept.

y= -x +c

Subst a coordinate to find c.

<em>Since the perpendicular bisector passes through the point (8, -10):</em>

When x=8, y= -10,

-10= -8 +c

c= -10 +8

c= -2

Thus, the equation of the perpendicular bisector is y= -x -2.

5 0

3 years ago

How do I prove this?

77julia77 [94]

Answer:

With math I think

Step-by-step explanation:

4 0

2 years ago

A triangle has a perimeter of 32 inches. The medium side is 2 more than the short side, and the longest side is 3 times the leng

MatroZZZ [7]

Answer:

Step-by-step explanation:

6+(6+2)+(6×3)=32

32÷(1+1+3)=6•••••2

So it's 6 and 6+2 and 6 times 3

which is 5 of number 6 plus 2

=6+(6+2)+(6×3)

=6+8+18

=32

7 0

3 years ago

Analyze the pre-image ABCD. What are the vertices of the final image if T–1, –2 ◦ ry = x is applied to figure ABCD?

mariarad [96]

Answers:

A''(3, 0); B''(3, 2); C''(1, 1); D''(1, -1)

Explanation:

We perform the reflection across y=x first. This reflection switches the x- and y-coordinates; this maps:

A(2, 4)→A'(4, 2)

B(4, 4)→B'(4, 4)

C(3, 2)→C'(2, 3)

D(1, 2)→D'(2, 1)

Next we perform the translation. This translation shifts the figure 1 unit left and 2 units down, by subtracting 1 from the x-coordinate and 2 from the y-coordinate. This maps:

A'(4, 2)→A''(3, 0)

B'(4, 4)→B''(3, 2)

C'(2, 3)→C''(1, 1)

D'(2, 1)→D''(1, -1)

6 0

2 years ago

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