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Ugo [173]
3 years ago
15

Solve the system by the substitution method x+3y=-2, y=-2x-24

Mathematics
1 answer:
n200080 [17]3 years ago
4 0
X + 3(-2x - 24) = -2
x - 6x - 72 = -2
-5x - 72 = -2
+ 72
-5x = 70
÷ -5
x = -14
Let me know if you have any questions!
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In an arithmetic sequence, term 10 is 33 and term 22 is -3. What are the first 4 terms
Anarel [89]

9514 1404 393

Answer:

  60, 57, 54, 51, ...

Step-by-step explanation:

The general term of an arithmetic sequence is ...

  an = a1 +d(n -1)

We would like to find the first term (a1) and the common difference (d). We can use the two given terms to find these parameters.

  a10 = 33 = a1 +d(10 -1)

  a22 = -3 = a1 +d(22 -1)

Subtracting the first equation from the second, we get ...

  (-3) -(33) = (a1 +21d) -(a1 +9d)

  -36 = 12d

  -3 = d

Using this value in the first equation, we can find a1.

  33 = a1 +9(-3) = a1 -27

  60 = a1 . . . . . . . . . . . . . . add 27 to both sides

So, our sequence has first term 60 and a common difference of -3.

The first 4 terms are ...

  60, 57, 54, 51, ...

8 0
3 years ago
PLZZ HELPP WILL GIVE BRAINLIEST Graph the line y=25x+3. Use the line tool and select two points on the line. THIS IS A K12 TEST
Sophie [7]

Step-by-step explanation:

you can use any value either in place of x or y to find the corresponding coordinate but if you want to find the x and y intercept you can desigate x as zero and find the y intercept and vice versa.

so to find x and y intercept

y=25x+3. to find x intercept designate y as zero

0=25x+3

-3=25x

x= -3/25. p( -3/25,0)

y=25x+3 to find y intercept designate x as zero

y=25(0)+3

y=3. p(0,3)

the above y and x intercept indicates the points that the line of equation pass through when drawn graphically.

6 0
4 years ago
Help me please thank you
Paladinen [302]
The answer is B, or 2x + 3y - 5 = 0. This is because when you substitute both points in for x and y, you get the values of 0=0, which is true!

5 0
3 years ago
Please helpppppppppppppp
TiliK225 [7]
I think the it would be some like y-8
8 0
3 years ago
Read 2 more answers
Y/6 - 7=4 plz answer
Vikentia [17]

Answer:

=66

Step-by-step :

y/6 -7=4

y/6+6(-7)/6 =4

6*y-42/6=6*4

y-42=6 * 4

y-42=24

y-42+42 -24+42

=66

7 0
3 years ago
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