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Nady [450]
2 years ago
15

Select the correct answer.

Mathematics
1 answer:
Basile [38]2 years ago
6 0

Answer:

(3,0), (4,0), (5,0)

on the x-axis at 3, 4 and 5

Step-by-step explanation:

This function is a lovely swoopey cubic curve. If we finish factoring it, it's not to hard to see the x-intercepts. You set it equal to zero and solve it. The solutions are the x-intercepts (are the "zeros")

0=(x-5)(x^2-7x+12)

0=(x-5)(x-3)(x-4)

0=x-5, 0=x-3 & 0=x-4

x=5, x=3, x=4

This is where the graph crosses the x-axis.

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X² + 2x - 3 = 0
tankabanditka [31]

Step-by-step explanation:

x²+2x-3=0

(x²+3x)-(x-3)=0

x(x+3)-1(x+3)=0

(x-1)(x+3)=0

x=1 or x=-3

6 0
2 years ago
If f(x)=16x- 30 and g(x)= 14x-6, for which value of x does (f-g)(x)=0?
Georgia [21]

Answer:

x=12

Step-by-step explanation:

16x-30-(14x-6)=2x-24=0. add 24 on both sides to get 2x=24. divide by 2 on both sides to get x=12

7 0
2 years ago
Zack used 4 centimeters of tape to wrap 2 presents. How many presents did Zack
sveta [45]

Answer:

7 presents

Step-by-step explanation:

He can wrap the 7 very small presents with that amount of tape

6 0
3 years ago
And an electronics warehouse ships TVs and DVD players to retailers all throughout the United States. The weight of three televi
vodomira [7]
X= weight of TV
y= weight of CD

3x+5y= 62.5
3x+ 2y= 52
You can either solve for a variable, or eliminate a variable by subtracting the second equation from the first:

3x + 5y = 62.5
-(3x+2y = 52)
0 + 3y = 10.5, so y = 10.5/3 or 3.5.

Now plug y= 3.5 back into any equation to get x:

3x + 5(3.5) = 62.5
3x + 17.5 = 62.5
3x = 45
x = 15
Always check work. Both equations should be true for x=15, y= 3.5
4 0
3 years ago
Write the inverse of the function: f (x) = 2x+3
34kurt

Answer:

y = \frac{x - 3}{2}

Step-by-step explanation:

To find the inverse of a function, simply 'switch' the x and y's and solve for y. y = 2x + 3 becomes x = 2y + 3. Now, solving for y, we get y = \frac{x - 3}{2}.

hope this helped! :)

6 0
2 years ago
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