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xenn [34]
3 years ago
10

ARE and JW comment on here to win and 4-5= what is the answer

Mathematics
1 answer:
Lady bird [3.3K]3 years ago
3 0
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Lucia knows the fourth term in a sequence is 55 and the ninth term in the same sequence is 90. Explain how she can find the comm
Andreyy89
Using the formula for the nth term of an arithmetic progression.
an = a + (n - 1)d
a(4) = a + 3d = 55
a(9) = a + 8d = 90
a(9) - a(4) => 5d = 35
d = 35/5 = 7.
From a(4): a = 55 - 3d = 55 - 3(7) = 55 - 21 = 34

a(2) = a + d = 34 + 7 = 41.

4 0
3 years ago
What is the slope of the line below?
Dominik [7]
Up two over one so the slope is 2
5 0
3 years ago
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How to solve equations with the substitution method
Paul [167]

Answer:

In a system, the substitution method is one of the 3 main ways to solve a system and can be very efficient at times.

<u>Skills needed: Systems, Algebra</u>

Step-by-step explanation:

1) Let's say we are given two equations below:

  y=4x \\ 4x-5y=-32

  We can use substitution here by substituting in for y in the second equation.   This means we put in 4x for y in the 2nd equation so we only have x variables in the equation, allowing us to solve for x.

2) Solving it out:

1) 4x-5(4x)=-32 \\ 2) 4x-20x=-32 \\3) -16x=-32 \\4)x=2\\5)y=4x = 4(2) = 8 \\ 6)y=8

We essentially substitute in that value as seen in step 1. Steps 2 and 3 are just simplifying the left side and allowing for us to solve. Step 4 is where we divide by -16 on both sides to solve for x. Step 5 and 6 show us solving for y using the value for x. We get x=2,y=8

5 0
2 years ago
Read 2 more answers
This is pretty hard ​
dedylja [7]

Answer:

yeah this is 8 units to the x axis, I hope I'm right! See ya! Any question or comments, pls tell me, thanks!

Step-by-step explanation:

7 0
3 years ago
Given that GK is a perpendicular bisector to JH which two triangles are congruent by the HL theorem
Digiron [165]
JGK is congruent to HGK
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