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Pani-rosa [81]
3 years ago
10

What is the value of x?

Mathematics
1 answer:
navik [9.2K]3 years ago
5 0
3x+84=180 minus 84
3x = 96 divide both sides by 3
x= 32°
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A guidance counselor randomly surveys 30 seniors about their post-high school plans. The table
bija089 [108]

Answer:

There is no table.

Step-by-step explanation:

Please attach it so I can answer!!

8 0
2 years ago
Solve each system of equation using any method.<br> 7 x + y = 5 2x - y = 4
nexus9112 [7]

Answer:

x = 1

y= -2

Step-by-step explanation:

to solve this system of equation , simultaneously using the substitution method

we say let

7 x + y = 5 ............................................. equation 1

2x - y = 4 ................................................... equation 2

from equation 2

2x - y = 4 ................................................... equation 2

2x - 4 = y

y = 2x -4.......................................................... equation 3

put the value of the y = 2x -4 into equation 1

7 x + y = 5 ............................................. equation 1

7x + 2x - 4 = 5

9x-4 = 5

9x = 5 + 4

9x = 9

divide both sides by the coefficient of x which is 9

9x/9 = 9/9

x = 1

substitute the value of x = 1 into equation 3

y = 2x -4.......................................................... equation 3

y = 2(1) -4

y = 2 - 4

y = -2

to check if you are correct put the value of x and y into any of the equations and you will see that the left hand side will be equal to the right hand side.

2x - y = 4 ................................................... equation 2

2(1) -(-2) = 4

2 + 2 = 4

4=4................................... proved

7 0
3 years ago
If the second term of an arithmetic sequence is -2 and the fourth term is 6, find the seventh term.
zhenek [66]
18 would be the 7th so... hope it helps
6 0
3 years ago
Which of the following are solutions to the equation below? Check all that apply . x ^ 2 + x - 20 = 0
Rina8888 [55]

Answer:

x= -5     or    x  =  4

Solution Set = {-5, 4}

Step-by-step explanation:

x^{2} + x -20 = 0

x^{2} + 5x - 4x -20  = 0

(x^{2} + 5x) - (4x + 20)  = 0

x(x + 5) - 4(x + 5)  =  0

(x + 5)(x - 4)  = 0

x+ 5= 0     or    x - 4 = 0

x= -5     or    x  =  4

Solution Set = {-5, 4}

7 0
3 years ago
Find domain and range
Nadusha1986 [10]

Domain — x > 1 (I notice opened dot.)

Range — y > 1

8 0
2 years ago
Read 2 more answers
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