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uysha [10]
3 years ago
14

I rlly need help solving​

Mathematics
1 answer:
Alchen [17]3 years ago
8 0

Answer:

x=20

Step-by-step explanation:

The line is a straight line, which is 180 degrees

x+100+3x = 180

Combine like terms

100+4x = 180

Subtract 100 from each side

100+4x-100=180-100

4x=80

Divide by 4

4x/4 = 80/4

x=20

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5 0
4 years ago
For what value of x is line m parallel to line n?
slavikrds [6]
For M and N to be parallel, the lower given degree on line M must be equal to the lower equation on line M.

3x +5 = 65

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4 0
3 years ago
Which determinants can be used to solve for x and y in the system of linear equations below?
NISA [10]
Are there choices? If there are, you should list them because there are some equivalents.
\left[\begin{array}{cc}4&16\\12&3\end{array}\right] \\  \left[\begin{array}{cc}-68&16\\21&3\end{array}\right] = x \\   \left[\begin{array}{cc}4&-68\\12&21\end{array}\right] = y \\

I'm assuming that you can solve these things. The top determinant comes to -180. The x value comes to - 540. When divided by the top one x = 3

The bottom determinant (y) comes to 900 and when divided by - 180 makes y = - 5. The checks out with actually solving the system of equations some other way.

3 0
3 years ago
Read 2 more answers
Can anyone help me please? <br> What is<br> 21 times x = 7
n200080 [17]

Answer:

x = 1/3

Step-by-step explanation:

Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other:

21x = 7

Divide 21 from both sides:

(21x)/21 = (7)/21

x = 7/21

x = 1/3

x = 1/3 is your answer.

~

5 0
3 years ago
Read 2 more answers
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