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Oksanka [162]
3 years ago
7

For every 144 light bulbs produced, 6 are defective. Find the number of defective light bulbs that could be expected out of 720.

Mathematics
1 answer:
aleksklad [387]3 years ago
8 0
30 Lightbulbs
Hope this helps
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A figure lies on a coordinate plane with point B located at (2,-5). The figure is rotated 90 degrees counter-clockwise around a
Rufina [12.5K]
<h3>Answer:  (12,3)</h3>

======================================================

Explanation:

R is located at (3,4). Move it 3 units to the left and 4 units down to have it move to (0,0). Call this point A. Apply the same translation rule to point B so that (2,-5) moves to (-1,-9). Let's call this point C

Now you'll use the rule (x,y) \to (-y,x) which rotates any point around the origin 90 degrees counterclockwise. So we're rotating C around A.

Point C has the coordinates (-1,-9). When you use the rotation rule (x,y) \to (-y,x) we get (-1,-9) \to (-(-9), -1) = (9, -1). We'll call this point D

Finally, undo the translation rule done at the start of the problem. So we'll go 3 units to the right and 4 units up to have point D move to point E = (12,3) which is exactly where point B' is located.

Check out the diagram below.

7 0
3 years ago
Perform the operation.<br> (8x2 – 7x – 2) – (6x2 – x + 3)
rewona [7]

Answer:

2 x² - 6x -5

Step-by-step explanation:

<u><em>Expansion:-</em></u>

Given that the expression

                    (8x²-7x-2)-(6x²-x+3)

                = 8x² - 6x² - 7x +x -2 -3

               = 2 x² - 6x -5

5 0
2 years ago
Choose the system of equations which matches the following graph:
aleksandr82 [10.1K]
The coordinates give are
(0,6)
(4,9)

(3,6)
(2,3)

These points can be substituted into the systems of equation in the choices and inspect which equations satisfy the value of the points. Doing this, the answer is
3x - 4y = -24
3x - y = 3
4 0
3 years ago
Help me pretty please
klio [65]

Answer:

SA=120 m^2

Step-by-step explanation:

SA=(9x5)+(3x4)+(9x4)+(9x3)

SA=120

4 0
2 years ago
Read 2 more answers
If you have 3/4 cup of flour how many eighths do you have
tangare [24]
6/8 because 3/4 is an equivalent fraction with 6/8.
3 0
3 years ago
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