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sergey [27]
2 years ago
11

I need help pleaseeee you get 44 points if you answer my last question and be serious

Mathematics
1 answer:
bixtya [17]2 years ago
7 0

I dont even know how to start answering that last question...

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-3x + 7y = -16<br> -9x + 5y = 16
otez555 [7]

Answer:

x = -4 y =-4

Step-by-step explanation:

Solve for the first variable in one of the equations, then substitute the result into the other equation.

7 0
3 years ago
I want to know what is 600 minutes to days
guajiro [1.7K]

Answer:

0.416667 of a day

Step-by-step explanation:

To get minutes to days you divide the minutes by the amount of minutes in a day which is 1440

\frac{600}{1440} \\0.416667

3 0
2 years ago
Read 2 more answers
If you divide one of the roots of the equation 4x2+bx−27=0 by the other root, the quotient will be −3. Find b.
klio [65]
<h3>Answer:</h3>

  ±12   (two answers)

<h3>Explanation:</h3>

Suppose one root is <em>a</em>. Then the other root will be -3<em>a</em>. The product of the two roots is the ratio of the constant coefficient to the leading coefficient:

  (<em>a</em>)(-3<em>a</em>) = -27/4

  <em>a</em>² = -27/(4·(-3)) = 9/4

  <em>a</em> = ±√(9/4) = ±3/2

Then the other root is

  -3<em>a</em> = -3(±3/2) = ±9/2 . . . . . . the roots will have opposite signs

We know the opposite of the sum of these roots will be the ratio of the linear term coefficient to the leading coefficient: b/4, so ...

  -(a + (-3a)) = b/4

  2a = b/4

  b = 8a = 8·(±3/2)

  b = ±12

_____

<em>Check</em>

For b = 12, the equation factors as ...

  4x² +12x -27 = (2x -3)(2x +9) = 0

  It has roots -9/2 and +3/2, the ratio of which is -3.

For b = -12, the equation factors as ...

  4x² -12x -27 = (2x +3)(2x -9) = 0

  It has roots 9/2 and -3/2, the ratio of which is -3.

4 0
3 years ago
Both figures shown below are trapezoids. ABCD - WXYZ. Find the
ivolga24 [154]

Answer:

Y*x -2x=40min

7 0
3 years ago
The room is a cube with edge length 11 feet including the ceiling in the floor how much surface area must be painted
Xelga [282]
Answer: 726cm squared

Surface area is the area of all the faces added together.

If the area of one face is 11x11=121

Because it is a cube and it has six faces with the same surface area we do 121x6=726 to give us the total surface area.

6 0
2 years ago
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