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Hoochie [10]
3 years ago
9

There's a string of red and blue lights strung around a window the red lights blink every three seconds and the blue lights blin

k every five seconds how many times will the blank at the same time in one minute
Mathematics
2 answers:
VashaNatasha [74]3 years ago
4 0
4 times 3x5 =15
60\15=4
Answer= 4
alekssr [168]3 years ago
3 0

Answer:

In one minute, they will blink at the same minute 4 times.

Step-by-step explanation:

The amount it takes for them to blink together is the least common multiple between the time it takes for each of them to blink together.

It takes 3 seconds for the red light to blink and 5 seconds for the blue light to blink. The lcm between 3 and 5 is 15. This means that they blink together each 15 seconds.

A minute has 60 seconds. So in a minute, they are going to blink together 60/15 = 4 times.

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Solve his problem for X and Y​
Verizon [17]

<em><u>Answer:</u></em>

<em><u>y = 5, 3; x = 171, 155</u></em>

<em><u>Step-by-step explanation:</u></em>

8y - 15 = y^2

y^2-8y+15=0

y^2-3y-5y+15=0

y(y-3)-5(y-3)=0

(y-5)(y-3)=0

y can be 5 or 3.

x = 180 - (8y - 15)

x = 180 - (8(3)-15)

x = 180 - 9

x = 171

OR

x = 180 - (8(5) - 15)

x = 180 - 25

x = 155

7 0
2 years ago
A teacher asks her students to fill out a survey about themselves. Which
andreyandreev [35.5K]

Answer:

Age

Step-by-step explanation:

it is about them.

If it were how many siblings they have it, then would not be just about them.

If it were there sport it would not be about them it would also be about sports

3 0
2 years ago
A basket is filled with 7 white eggs and 14 brown eggs. Half of the brown eggs are cracked.
Margaret [11]
1/3 chance of getting a cracked egg
4 0
3 years ago
A cone has a diamete of 3 inches the cone hold 12 cubic inches of water to the nearet inch what is the height of the cone
scoundrel [369]

Answer:

5 inches

Step-by-step explanation:

The volume of a cone formula is V = (1/3)(base)(height).  Thus, 3V =(base)(ht).

We want to calculate the height of the cone.  Divide both sides of

3V =(base)(ht) by (base), obtaining   3V/(base) = ht.

Substituting 12 in^3 for V, and 2.25pi for (base), we get:

12 in^3

------------ = 5.33 in, or, to the nearest inch, 5 inches.

2.25 pi

Note:  The diameter of the cone is 3 inches.  The area of the base is pi*r^2, so we must divide d = 3 inches by 2 to obtain the radius:  1.5 in.  Then r^2 = 2.25 in^2.

4 0
2 years ago
\begin{aligned} &amp;-x+4y=-9 \\\\ &amp;y=-2x +6 \end{aligned} ​ −x+4y=−9 y=−2x+6 ​ Is (2,3)(2,3)left parenthesis, 2, comma, 3,
zheka24 [161]

Answer:

NO

Step-by-step explanation:

Given the system of equation

-x+4y = -9,... 1

y = -2x+6.... 2

To find the solution to the equation

Substitute equation 2 into 1

-x+4(-2x+6) = -9

-x-8x+24 = -9

-9x= -9-24

-9x = -33

x = 33/9

Find y

y = -2x+6

y = -2(33/9)+6

y = -66/9 + 6

y = -66+54/9

y = -12/9

y = -4/3

Hence (2,3) is not the solution to the system of equation

5 0
2 years ago
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