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Leokris [45]
3 years ago
11

Simplify the difference. (7w2 – 7w – 8) – (5w2 + 2w – 3)

Mathematics
2 answers:
Vera_Pavlovna [14]3 years ago
6 0
Pretty sure its 2w2-9w-5
77julia77 [94]3 years ago
5 0
Answer= 2w2-9w-5

Hope this helps
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Does this table represent a function? why or why not? x: 2 3 3 4 5 y: 1 4 3 2 5
gayaneshka [121]
Let's put the chart into ordered pairs:
(x, y)
(2,1)
(3,4)
(3,3)
(4,2)
(5,5)

In bold, we see that there are two y-values at x=3. This means that this relation fails the vertical line test (two points on the same verticle line). This is not a function. 

The answer options may be mis-written. 
The answer is no, because one x value corresponds to more than one y-value. 
7 0
3 years ago
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What is 1/2 divided by 4?
Natasha_Volkova [10]
1/2/4=1/2 x 1/4 = 1/8
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Dvinal [7]
Hold on just have to type before I can see the question
8 0
3 years ago
The heights in cm of some pupils are
tatuchka [14]

The median is a halfway point in the set of data.

List the numbers in order from smallest to largest:

111, 129, 144, 149, 152, 162, 166, 171

Because there are an even number of values in the data set, find the two middle numbers, add them together and then divide by 2:

Median = ( 149 + 152 ) /2

Median = 150.5

4 0
3 years ago
What are the vertex and xintercepts of the graph of the function below?<br> y=(x + 4)(x-2)
erik [133]

Yo sup??

y=(x+4)(x-2)

to find the x intercept put y=0

0=(x+4)(x-2)

so either x=-4 or x=2

Therefore the graph intersects the x axis at -4 and 2

Lenght of x intercept=|-4-2|=6 units

y=(x+4)(x-2)

=x^2+2x-8

This is an upward opening parabola

To find the coordinates of the vertex we can apply the formula

(-b/2a,-D/4a)

b=2

a=1

D=b^2-4ac

=4-4*1*(-8)

=4+32=36

Vertex=(-2/2*1,-36/4*1)

=(-1,-9)

Hope this helps.

3 0
3 years ago
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