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mote1985 [20]
3 years ago
5

Find the value of this expression if x = -7. x2 - 1

Mathematics
2 answers:
Reika [66]3 years ago
7 0

Answer:

x² - 1

-7² - 1

49 - 1

48

Free_Kalibri [48]3 years ago
3 0
The answer is: -14 -1 equals -15
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Graph the linear equation. Find the three points that solve the equation then plot on the graph. -y=-x+1
Vinil7 [7]

Answer:

Step-by-step explanation:

The first step will be to make y the subject of the formula, by multiplying both sides of the equation by -1.

y = x - 1

This is simply the equation of a line with a slope of 1 and y-intercept (0,-1)

To determine the three points that solve the equation, we can let x be;

0, 1, 2

When x =0, y = 0-1 = -1

When x = 1, y = 1-1 = 0

When x = 2, y = 2 - 1 = 1

Therefore, we have the following three sets of points that can be used to graph the given linear equation;

(0, -1)

(1, 0)

(2, 1)

Find the attached for the graph

3 0
3 years ago
Which of the following represents this function written in intercept form?
rodikova [14]
The answer is 

C. - (x + 3)(x - 4)

because if you solve this....

- (x + 3)(x - 4)
(-x - 3)(x - 4)
-x^2 +4x - 3x + 12

-x^2 + x + 12 
6 0
3 years ago
In a class of 24 students , 13 students sold over 150 raffle tickets each and the rest of the class sold about 60 raffle tickets
ioda
Yes. Because 150x13=1950. then 1950+60=2610. so yes they met their goal
8 0
3 years ago
What is the value of expression 2X plus 5Y when X equals three and Y equal 2
fredd [130]
16, because 2•x would also be 2•3 which is 6, and 5•y is rewritten as 5•2 which equals 10. 10+6=16 :)
3 0
3 years ago
Which statement is not true about the parabola?
pantera1 [17]

Answer:

D: The maximum value is 0

Step-by-step explanation:

Choice A is true because the x-intercepts are shown on the graph and are both -2 and 2.

Choice B is true because the parabola intercepts the y axis at 2.

Choice C is true because the AoS runs down the vertex which happens to be on the point (0,2).

Choice D is false because this parabola has no maximum value (parabolas continue forever unless stated otherwise).

6 0
3 years ago
Read 2 more answers
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