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irga5000 [103]
3 years ago
7

Find the perimeter.

Mathematics
1 answer:
likoan [24]3 years ago
6 0

A just took the test

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What is a formula for the nth term of the given sequence? 20,23, 26...​
lord [1]

Answer:

17 + 3n

Step-by-step explanation:

20, 23,26 ..............

This is an arithmetic series

First term = a = 20

Common difference = second term -  first term

                               d = 23 - 20 = 3

nth terms = a + (n-1)*d

               = 20 + (n -1) *3

               = 20 + n*3 - 1*3

              = 20 + 3n - 3

               = 20 - 3 + 3n

              = 17 + 3n

6 0
2 years ago
Andy completes the square for the equation x2 + 6x - 8 = 0. Which of the following equations reveals the vertex of the parabola?
Stolb23 [73]
If the equation x^2+6x-8 has undergo completing the square, the answer would be:
x^2+6x-8

x^2+6x+9-8-9
**In this example, since 6x is the middle term, what comes to my mind is the polynomial (x+3) because 2ab results into 6x. [from the special products lesson (a+b)^2=a^2+2ab+b^2 ] 
(x+3)^2 -17 = 0
So if the equation is equal to y, then this equation's
y+17=(x+3)^2
The vertex would be on the point (-3, -17)
3 0
2 years ago
Read 2 more answers
What does "sum" mean in math?
Alexxx [7]
In math the sum means to add
6 0
3 years ago
Read 2 more answers
Hey does anyone know all the numbers or just a few! It would be such a help if you do :)
wolverine [178]
(4,3) (-3,4)(-3,2)(-1,2)
8 0
2 years ago
3(2x + 6) = 2(4x – 5)
maxonik [38]

Answer:

x = 14

....................              

6 0
3 years ago
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