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vovangra [49]
3 years ago
11

Simplify -2/3 + -4/5 + 7/15 + -11/20

Mathematics
1 answer:
Yanka [14]3 years ago
4 0

Answer:

-\frac{31}{20}

Step-by-step explanation:

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3. Find the slope and y-intercept of the graph of the following equation.<br> 2y + 4 = -6x
creativ13 [48]

Answer:

slope = -3, y-intercept y = -2

Step-by-step explanation:

  • Make y the subject of the line 2y + 4 = - 6x
  • Divide throughout by two to get the slope of the graph as -3.
  • Substitute x = 0 to get the y - intercept as y = -2
4 0
3 years ago
1. The table shows a function.
Nataliya [291]

Answer: a) Linear function

 b) adding 8 each time x increases by 1

c) (0,13)


Step-by-step explanation:

For the given table, the rate of change is constant throughout the table.

The rate of change = \frac{change\ in\ y}{change\ in\ x}=\frac{21-13}{1-0}=8

Similarly we can check for every interval, the rate of change remains constant .

Thus, it is a linear function and the pattern we observe here is "adding 8 each time x increases by 1".

We know that the ordered pair of y intercept = (0,y)

In the table at x=0, y=13

hence, the y intercept of the given function is (0,13)

7 0
3 years ago
Figure a is a scale image of figure b. what is the value of x? please answer asap!
emmainna [20.7K]

<em>Greetings from Brasil...</em>

According to the statement, one figure is scaled in relation to another, so we can apply similarity to polygons.....

So

BIG/small = BIG/small

or

small/BIG = small/BIG

12.5/10 = X/16

OR

10/12.5 = 16/X

12.5/10 = X/16

10X = 12.5 · 16

X = 200/10

<h3>X = 20</h3>
8 0
4 years ago
98-x2=0 solve this with the quadratic formula
Mars2501 [29]

Answer:

             x∈{-7√2, 7√2}

Step-by-step explanation:

98-x^2=0\\\\-x^2+98=0\\\\a=-1\,,\ \ b=0\,,\ \ c=98\\\\x_1=\dfrac{-0-\sqrt{0^2-4\cdot(-1)\cdot98}}{2\cdot(-1)}=\dfrac{-\sqrt{4\cdot49\cdot2}}{-2}=\dfrac{-2\cdot7\sqrt{2}}{-2}=7\sqrt2\\\\x_2=\dfrac{-0+\sqrt{0^2-4\cdot(-1)\cdot98}}{2\cdot(-1)}=\dfrac{2\cdot7\sqrt{2}}{-2}=-7\sqrt2

7 0
3 years ago
Please help! How would you find the relative frequency of being female and attending an action movie?
denpristay [2]
Is this a STARR test? 
A. Divide 99 by 250
6 0
3 years ago
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