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2 years ago

What is the value of x in the equation x – y = 30, when y = 15?

1 answer:

4 0

I think isn't anyone of these alternatives because if we put number 15 in the place of y it is x-y=30. X-15=30
X=30+15=45.
X=45

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3 years ago

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Find the distance between M(6, -7) and a line that contains<br> C(-6, -2) and H(-1, 10).

77julia77 [94]

Answer

Step-by-step explanation:

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2 years ago

11. Which matrix represents the system of equations below?

dimulka [17.4K]

Answer:

$\left[\begin{array}{cccc}-12&-13&13&|15\\7&-10&-3&|11\\7&14&5&\:\:\:|-5\end{array}\right]$

Step-by-step explanation:

The system of equations is;

-12x-13y +13z =15

7x-10y-3z = 11

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The coefficient matrix is $\left[\begin{array}{ccc}-12&-13&13\\7&-10&-3\\7&14&5\end{array}\right]$

The constant matrix is $\left[\begin{array}{c}15\\11\\-5\end{array}\right]$

The augmented matrix is $\left[\begin{array}{cccc}-12&-13&13&|15\\7&-10&-3&|11\\7&14&5&\:\:\:|-5\end{array}\right]$

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3 years ago

Can you please help with this

sleet_krkn [62]

Answer:

Exercise 1 : a. 4 ; b. -4

Exercise 2 : a. +7 positive/right ; b. -7 ; c. -7 negative/left

Step-by-step explanation:

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3 years ago

Which is not an equation of the line going through (3,-6) and (1, 2)?

Olegator [25]

Answer:

○ $\displaystyle y - 1 = -4(x - 2)$

Step-by-step explanation:

When you plug these coordinates into this equation, they will be confirmed as <em>false</em>.

I am joyous to assist you anytime.

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3 years ago