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andrezito [222]
3 years ago
15

HELP PLEASE !!!

Mathematics
1 answer:
saul85 [17]3 years ago
5 0
X - 4y = 12 ----(1)
y = 1/4 x - 3 ----(2)

(2)*4 ; 4y= x-12
(1) is exactly the same equation with (2)
so there are many solutions (c)
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Change one digit from the number 238882 so that it is divisible by 3 not not divisible by 2
Aleksandr-060686 [28]

Answer:

238882 -> 238881

Step-by-step explanation:

To make it not divisable by 2, you have to change the rightmost digit.

Simply divide the number by 3, round it, then multiply it by 3 again.

6 0
2 years ago
While on a business trip to Brookfield, Haley treated her co-workers to a meal that cost $50. Haley knew that when the bill came
frosja888 [35]

Answer:

$66

Step-by-step explanation:

The meal cost $50 without taxes.

The cost of tax:

$50*%14= $7

so she will pay a $7 tax

Also, she wants to tip %18 of the original $50 so:

$50*%18= $9

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How many 4-digit numbers are multiples of at least one of these two numbers: 2; 5.
garri49 [273]

Answer:

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Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
50 points! Tell whether the orthocenter is inside, on, or outside the triangle. Then find the coordinates of the orthocenter.
Nady [450]

Answer:

  • (1,3) is inside the triangle

Step-by-step explanation:

Orthocenter is the intersection of altitudes.

We'll calculate the slopes of the two sides and their altitudes ad find the intersection.

<h3>Side QR</h3>
  • m = (3 - 5)/(4 - (-1)) = -2/5

<u>Perpendicular slope:</u>

  • -1/m = 5/2

<u>Perpendicular line passes through S(-1, -2):</u>

  • y - (-2) = 5/2(x - (-1)) ⇒ y = 5/2x + 1/2
<h3>Side RS</h3>
  • m = (-2 - 3)/(-1 -4) = -5/-5 = 1

<u>Perpendicular slope:</u>

  • -1/m = -1/1 = -1

<u>Perpendicular line passes through Q(-1, 5):</u>

  • y - 5 = -(x - (-1)) ⇒ y = -x + 4

The intersection of the two lines is the orthocenter.

<u>Solve the system of equations to get the coordinates of the orthocenter:</u>

  • 5/2x + 1/2 = x + 4
  • 5x + 1 = -2x + 8
  • 7x = 7
  • x = 1

<u>Find y-coordinate:</u>

  • y = -1 + 4 = 3

The orthocenter is (1, 3)

If we plot the points, we'll see it is inside the triangle

6 0
2 years ago
Solve the quation by completing the square . round to the nearest hundredth if nessarsy x2-x-7=0
Anestetic [448]

Answer:

3.19

Step-by-step explanation:

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2 years ago
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