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DedPeter [7]
2 years ago
10

Solve the system of linear equations by substitution. y=-2+4x y=4+6x

Mathematics
1 answer:
r-ruslan [8.4K]2 years ago
7 0

Answer:

x = -3

y = -14

Step-by-step explanation:

4 + 6x = -2 + 4x

6x - 4x = -2 - 4

2x = -6

x = -3

y = -2 + 4(-3)

y = -14

y = 4 + 6(-3)

y = -14

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What is the irrational number between 5.5and5.2
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Answer:
<span>The irrational number between 5.5 and 5.2 is square root of 30. </span>
6 0
3 years ago
Write down the nth term of the sequence 5, 8, 13, 20, 29
amid [387]
Hello! To find any number in the arithmetic sequence we can use a formula!

It is given by  a_n =a_1+(n-1)d


The geometric sequence formula goes by S_n =  \frac{a_1(1-r^n)}{1-r}

So for this we notice that there's a start of 5 and is being added 3 to get 8.

and then each time it is added by 2 more to get the next time

5
5+ 3 = 8
8 + 5 = 13
13 + 7 = 20
20 + 9 = 29
29 + 11 = 41
41 + 13 = 54
54 + 15 = 69 
69 + 17 = 83

Your formula is a_n = (n-1)^2 + 4&#10;&#10;
Where n starts at 2 not 1

8 0
3 years ago
How can you determine if a triangle is a right triangle given the 3 side lengths?
sveta [45]

Answer:

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Like length 3, 4 and 5 are leghts of right angled triangle

5 0
2 years ago
Which statement illustrates the Distributive Property of scalar multiplication? (Assume that A and B are matrices and c and d ar
olasank [31]

Answer:

C. cA-cB=c(A-B)

Step-by-step explanation:

Given that A and B are matrices and c is a scalar, then the distributive property of scalar multiplication over addition is given by;

c(A+B)=cA+cB

The distributive property of scalar multiplication over subtraction is

c(A-B)=cA-cB

The correct answer is C.

5 0
3 years ago
Read 2 more answers
Can someone plz help me on this plz I beg u
AfilCa [17]

Answer:

8

Step-by-step explanation:

So, lets go over a few things:

First off, all triangles have a total angle of 180 degrees.

Secondly, we know that the first two angles are 57 and 51.

Thirdly, we know that the missing angle is 9x

To solve this, we must add together the known angles, subtract them fro 180, and divide that by 9. This will give us the missing x value.

So, add together the two angles we know:

57+51

=

108

So we know 108 degrees of our triangle. We must find whats left of the 180.

To do this, subtract 108 from 180:

180-108

=

72

So our remaining angle is 72 degrres.

But recall that x isnt the misisng angle, 9x is.

So, to get x on its own, we must divide both the missing angle and 9x by 9:

72=9x

---  ---

9   9

=

8=1x

So now we know that x equals 8.

I hope this helps! :)

8 0
3 years ago
Read 2 more answers
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