What is 3m minus 4n minus 8

Mathematics

1 answer:

jenyasd209 [6]3 years ago

6 0

the answer is 0000000000000000

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Given the following equation, at what point will the graph intersect? f(x) =5x+1 g(x)= -2x+15

Andru [333]

Answer: (2,11)

Step-by-step explanation:

To find the point where the functions will intersect, we want to find the place that they are equal to each other. We do this by setting the equations equal to each other.

5x+1=-2x+15 [add both sides by 2x]

7x+1=15 [subtract both sides by 1]

7x=14 [divide both sides by 7]

x=2

Now, we know that the functions intersect at x=2. To find the point, we would plug x back into both equations to ensure that the points are the same.

f(2)=5(2)+1 [multiply]

f(2)=10+1 [add]

f(2)=11

The point on f(x) is (2,11).

g(2)=-2(2)+15 [multiply]

g(2)=-4+15 [add]

g(2)=11

The point on g(x) is (2,11).

Since the point at x=2 is the same for f(x) and g(x), we know that the graph intersects at (2,11).

8 0

3 years ago

-5x+7+2x-13<9 Please Explain

olganol [36]

Ok the answer is -5 less than 9 which is true lol

Anyways here’s how I got the answer

-5+7+2x-13 less than 9

Combine like terms in this case it’s -5 and 2, and the other is 7 and -13

-5+2= -3
7-13= -6

Ok now that that’s done here’s the next step

-3x-6 less than 9 solve it

-3x-6 < 9
+6< +6

-3x < 15

Now from there you divide then so
-3x/3 cancels out, and 15/-3 = -5
X=-5

And so -5<9 :) hope this helped!! I will also include a picture of my work (please exult messiness lol)