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madreJ [45]
3 years ago
12

What is the slope of the line that contains the points (-1,9) (5,21)

Mathematics
2 answers:
fiasKO [112]3 years ago
4 0
M=2 is what i got. Hope this helped 



Over [174]3 years ago
4 0
21-9 over 5-(-1)
12/6
slope=2
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Use the grouping method to factor x3 + x2 + 2x + 2.
NISA [10]
Therefore the answer is D. (x + 1)(x2 + 2)

4 0
3 years ago
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Which equation is equivalent to √x^2+81 = x+10
jeka57 [31]

Keywords:

<em>equation, operations, equivalent, binomial, square root </em>

For this case we have an equation in which we must apply operations to rewrite it in an equivalent way. We must start by raising both sides of the equation to the square. Thus, we eliminate the square root of the left side of equality and finally solve the binomial of the right side of equality.

So we have:

\sqrt {x ^ 2 + 81} = x + 10\\(\sqrt {x ^ 2 + 81}) ^ 2 = (x + 10) ^ 2\\x ^ 2 + 81 = (x + 10) ^ 2

By definition:(a + b) ^ 2 = a ^ 2 + 2ab + b ^ 2

x ^ 2 + 81 = x ^ 2 + 2 (x) (10) + (10) ^ 2\\x ^ 2 + 81 = x ^ 2 + 20x +100

Thus, x ^ 2 + 81 = x ^ 2 + 20x +100 is equivalent to \sqrt {x ^ 2 + 81} = x + 10

Answer:

x ^ 2 + 81 = x ^ 2 + 20x +100

Option D

4 0
3 years ago
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Miguel bikes 23 km per hour and starts at mile 10. Gabby bikes 28 km per hour and starts at mile 0. Which system of linear equat
7nadin3 [17]
The correct answer is D) Miguel:  d=23t+10, Gabby d=28t

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8 0
3 years ago
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Would be great if someone can help with this.
Neporo4naja [7]

Answer:

144

Step-by-step explanation:

In a regular decagon like the one shown in the picture each angle is 144 degrees and it all adds up to 1,440. If you want proof search up "angle of a decagon"

8 0
2 years ago
How can you solve this ​
natima [27]

Answer:

the answer is 10

Step-by-step explanation:

2x^2-y turns into

2*3^2-8  

   \ /

2*9-8

\ /

18-8

 \ /

 10

hope this helped if it did reply and do forget to rate thank you

5 0
3 years ago
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