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SOVA2 [1]
4 years ago
6

A light flashes every two minutes a second light flashes every 3.5 minutes and a third light flashes every four minutes if all t

hree lights flash together at 8 PM what is the next time of the day they were all flash together
Mathematics
2 answers:
Bezzdna [24]4 years ago
6 0
The answer should be 8:28 pm
Diano4ka-milaya [45]4 years ago
6 0

Multiples of 2: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28

Multiples of 3.5: 3.5, 7, 10.5, 14, 17.5, 21, 24.5, 28

Multiples of 4: 4, 8, 12, 16, 20, 24, 28

The least common multiple of the 3 numbers is 28, so the lights will flash at the same time every 28 minutes.

The time will be 8:28 PM

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The answer is D: Trapezoid ABCD was reflected across the y-axis and then rotated 90° counterclockwise around the origin
4 0
3 years ago
Can someone help me please ???
Phantasy [73]

Answer:

-7,0,5,8

Step-by-step explanation:

Just try to visualize it. If a function is reflected across the x-axis, that means that positive values are flipped and become negative and negative values become positive.

So, g(x)=-f(x).

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PLEASE HELP FOR MIDTERMS!!! Find the slope of the line through each pair of points. (-5, -8), (-9, -20)
Leni [432]

Step-by-step explanation:

Really really sorry if I'm wrong...

<u>Y2 -Y1</u>

X2 - X1

<u>-20 - - 8</u>

-9 - -5

<u>-12</u>

-4

(simplified): <u>-3</u>

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4 0
4 years ago
Solve for x in each of the following diagrams. ​
Vikentia [17]
In the left one x equals 12.9 and on the right one x equals 11
5 0
3 years ago
George Washington was born on 2-22-1732. He died in 1799 at the age of 67. The month in which he died and the day of the month o
Nina [5.8K]

Answer:

George Washington died on December 14th, 1799

Numerical with the arrangement: month - day - year

12 - 14 - 1799

Step-by-step explanation:

In the question, we are told that: the month in which he died and the day of the month on which he died are consecutive even integers whose product is 168.

Therefore,

If one positive even integer = Month he died is represented by x

The second consecutive even integer = Day he died = x + 2

Their product =

x ( x + 2) = 168

x² + 2x = 168

x² + 2x - 168 = 0

We factorise

x² + 14x - 12x - 168 = 0

(x² + 14x) - (12x - 168) = 0

x(x + 14) - 12(x + 14) = 0

(x - 12)(x + 14) = 0

x - 12 = 0, x = 12

x + 14 = 0 , x = -14

Our answer cannot be a negative interger, hence x = 12

So the first positive even integer = 12

The second positive even integer = x+2 = 12 + 2 = 14

Therefore, the month he died = n = 12th month = December

The day he died = n + 2 = 14 = 14th day.

Hence, George Washington died on December 14th, 1799

Numerical with the arrangement: month - day - year

12 - 14 - 1799

4 0
3 years ago
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