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4 years ago

4x - y Please someone help me I don't understand?

1 answer:

8 0

Divide each term by 4 and simplify.Tap for less steps...Divide each term in 4x=y4⁢x=y by 44.4x4=y44⁢x4=y4Reduce the expression by cancelling the common factors.So your answer would be x=y over 4

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Solve this system of linear equations. Separate

tia_tia [17]

Answer:

(9,4)

Step-by-step explanation:

The given system is:

9x + 3y = 93

3x - 4y = 11

Multiply the bottom equation by 3 to get:

9x + 3y = 93

9x - 12y = 33

Subtract bottom equation from top one to get:

3y--12y=93-33

$15y = 60$

$y = \frac{60}{15}$

$y = 4$

We put y-value into the bottom equation:

$3x - 4 \times4= 11$

$3x - 16= 11$

$3x = 11 + 15$

$3x = 27$

$x = \frac{27}{3}$

$x = 9$

4 0

3 years ago

For the straight line defined by the points (3,57) and (5,87), determine the slope ( m ) and y-intercept ( ???? ). Do not round

Sphinxa [80]

Answer: The slope of the line is 15 and y-intercept is 12.

Step-by-step explanation: We are given to find the slope and y-intercept of the straight line defined by the points (3, 57) and (5, 87).

We know that

the slope of a line passing through the points (3, 57) and (5, 87) is given by

$m=\dfrac{87-57}{5-3}=\dfrac{30}{2}=15.$

Since the straight line passes through the point (3, 57), so its equation will be

$y-57=m(x-3)\\\\\Rightarrow y-57=15(x-3)\\\\\Rightarrow y-57=15x-45\\\\\Rightarrow y=15x-45+57\\\\\Rightarrow y=15x+12.$

So, the required equation of the straight line is $y=15x+12.$

Thus, the slope of the line is 15 and y-intercept is 12.

4 0

3 years ago

Fifteen is less than or equal to a number minus 10

Levart [38]

Answer:

15 ≤ x - 10

Well, that's how you describe it, and I write it for you.

4 0

3 years ago

What is the answer for 2c/5<8

rosijanka [135]

Hello guys I am new here and I don't know how to answer your question

6 0

3 years ago

Last one still need major help

harkovskaia [24]

Since it is 12 dollars per hour, she would multiply the number of hours they were conoeing with the cost... $12. The answer is B... 12h

4 0

4 years ago