You hang two strings of decorative lights. Strand 1: changes between red and blue every 15 seconds. Strand 2: changes between green and gold every 18 seconds. Both strands just changed color. After how many seconds will the strands change color at the same time again?

Answers

Answer 1

Answer:

The strands change color at the same time again after 90 seconds

Step-by-step explanation:

We are told:

Strand 1: changes between red and blue every 15 seconds.

Strand 2: changes between green and gold every 18 seconds.

To solve for this question, we use the LCM method.

Step 1

List multiples of each number until the first common multiple is found.

Multiples of 15:

15, 30, 45, 60, 75, 90, 105, 120

Multiples of 18:

18, 36, 54, 72, 90, 108, 126

Therefore,

LCM(15, 18) = 90

The first common multiple is 90, and this is the lowest common multiple.

Therefore, the strands will change color at the same time again after 90 seconds.


Related Questions

When a coordinate grid is superimposed on a map of lanesville the middle school is located at (15,13) and the librart is located at (27,9). If each unit represents 1 mile how many miles apart are the middle school in the liebrary round your answer to the nearest 10th

Answers

Answer:

4.5 miles

Step-by-step explanation:

Given

[tex]Middle\ School = (15,13)[/tex]

[tex]Library = (27,9)[/tex]

To solve this, we simply solve for the distance (D) between both points.

[tex]D = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}[/tex]

Where:

[tex](x_1,y_1) = (15,13)[/tex]

[tex](x_2,y_2) = (27,9)[/tex]

[tex]D = \sqrt{(27 - 25)^2 + (9 - 13)^2}[/tex]

[tex]D = \sqrt{(2)^2 + (-4)^2}[/tex]

[tex]D = \sqrt{4 + 16}[/tex]

[tex]D = \sqrt{20}[/tex]

[tex]D=4.472135955[/tex]

[tex]D=4.5[/tex] --- approximated

Since each unit is 1 mile. The distance is 4.5 miles

It was 7 degrees below zero in the morning. By afternoon the temperature rose 15 degrees. How warm was it?

Answers

Answer:

8 degrees

Step-by-step explanation:

The temperature was -7 and then rose by 15, -7 +15 = 8

8 degrees

(-7) + 15 = 8

kai is making 96 cupcakes for a schoolg event. how many more teaspoons of vanilla are needed to make all 96 cupcakes?

Answers

In order to answer this question, we need to know how many teaspoons of vanilla you need for each cupcake. Reply the teaspoon amount and I’ll be happy to help!

i need help loooool 9% of $50

Answers

Answer:

4.5

Step-by-step explanation:

.09 * 50 = 4.5

Leeza is 6 years older than two times her brother Sammy’s age. Let s represent Sammy’s age.

Which expression represents Leeza’s age?

a.6s + 2


b.2s


c.s + 6


d.2s + 6

Answers

✧・゚: *✧・゚:*hello there!*:・゚✧*:・゚✧

✧here is your answer:

.・゜゜・d. 2s + 6・゜゜・.

♥⛧i hope this helps!!

✧༺♥༻∞lmk if you need help on anything else!!∞༺♥༻✧

❀-kay♬

d.2s + 6.
Hope you have a nice dayyyyyyyyyy

Salon he runs 1/5 of a mile in 1/20 of an hour he swims 2/3 of a mile and 1/9 of an hour he bikes for miles in a quarter of an hour at these rights how many minutes does it take being to run 2 miles swim 2 miles in bike eight

Answers

Answer: 30 mins + 30 mins + 20 Mins

= 80 Minutes

will give brainliest to actual answer

Answers

in    |   out

100 |  51

4    |  3

 6   |  4

30  |  16

60  |  31

rule: y = x/2+1

Please give me Brainly now

Answer:

i have to give brainliest to someone but i need anpother person to comment and that person is me <3

nirjnewqetwqwqq

2319234 +89324 5h342bjn fj

sfkm orwnrpijn wp gw

werkq enlhnfr494392

Step-by-step explanation:

rgwerhwreg

1829381

dsfkm sdnfipwngtgnhe njkmb gnjrfv cmksdijrgunjbkkkvlljhdgsjk

dg s;lkfgnsjfnglijfj sv 2789215

513

3253

3

3

5'

4rkk nkgb

Bill has candy from trick-or-treating. He has 15 Reese's and 20 Kit-Kat's.
What is the ratio of Reese's to all candy?

Answers

Answer:

15:35

Step-by-step explanation:

Compare 2 4/5 ? 2.325

Answers

Answer:

>

Step-by-step explanation:

2.8>2.325

answer:     >                                   p l e a s e   m a r k   b r a i n l e s t .

this is because 2 4/5 = 2.800 and 2.800 is bigger than 2.325 because in the tenths place column (the column closest to the decimal without going over it), 8 is bigger than 3 so 2.800 is bigger than 2.325. So the answer is 2 4/5 > 2.325.

Given AABC ADEF, AB = 4x-1, FD = 7, and DE = 8x-33.
Find the value of x and the length of DE.
x=8 and DE = 31
x=8 and DE = 9
Ox=2 and DE = 10
x = 2 and DE = 7

Answers

Answer: x=8 and DE=31

Step-by-step explanation:

The scale of a map is 1.5cm : 75km. What is the actual distance between two
towns that are 3.5cm apart on the map?

Answers

Answer:

175 km

Step-by-step explanation:

1.5/75=3.5/x

1.5x=262.5

x=175

BRAINLIEST ANSWER IF CORRECT!!!!!
The function F has a removable discontinuity at?

Answers

Answer:

x=2

Step-by-step explanation:

Removable discontinuity is when you can connect the graph by filling in 1 singular point

subtract. write your answer in scientific notation.
(7.15×105)–(5.964×105)

Answers

Answer:

124.53

Step-by-step explanation:

7.15×105=750.75

5.964×105=626.22

750.75-626.22=  124.53

lmk if this is right or not :)

Answer with step-by-step explanation:

(7.15 × 105) - (5.964 × 105) = 124.53

750.75 - 626.22 = 124.53

Hope this helped! (brainliest please)

8(7k+5m) simplify the expression

Answers

Answer:

56k + 40m

Step-by-step explanation:



Hi! I’m pretty sure it would be -

56k+40m

Answerr this. Will also give branliest. helpp

Answers

Answer:

Angles 1 and 9 are corresponding angles

2 and 3 same side interior angles

8 and 12 are OTHER

6 and 12 are alternate interior

1 and 2 are linear pairs

15 and 11 are alternate interior

8 and 9 are same side interior

2 and 4 are corresponding

Step-by-step explanation:

Use the graph!

Brainliest??Hope it helped!

∠1 and ∠9 = Corresponding angles

2 and 3 = Same side interior angles

∠8 and ∠12 = Other

∠6 and ∠12 = Alternate interior angles

∠1 and ∠2 = Lineae pair

∠15 and ∠11 = Alternate interior angles

∠8 and ∠9 = Same side interior angles

∠2 and ∠4 = Corresponding angles

What are the two words that allow you to check your division problem backward?

Answers

Answer:

inverse operation

Step-by-step explanation:

Inverse means opposite. The opposite of division is multiplication. For example, if you divided 15 by 3, the answer is 5. If you multiply 5 by 3, the answer is 15. You know your answer is correct by checking it with the inverse operation.

Hope this helps!! Have a wonderful day :3

1. Gilbert wants to know the dimensions of his (3x2 – 12x + 9) square units
rectangular lot. What is the length and width of his lot?​

Answers

3x2=6-21=18babdhjbdjdbdnhdbdnd

10x- 2y=16 and x+5y=-20
are perpendicular,parallel or neither

Answers

They are parallel that’s the answer
Parallel that’s the answer

1634 divided by 12 round it to the nearst tenth

Answers

Answer:

136.2

Step-by-step explanation:

Answer:

136.2

Step-by-step explanation:

1634/12=136.1666666667=136.2

I need to turn that into an equation but I cant figure it out.​

Answers

Answer:

Hello!!! Princess Sakura here ^^

Step-by-step explanation:

The equation will be...

[tex]\frac{3x-6}{2} +12[/tex]

I don't know if you need to solve it but here you go anyways...

[tex]\frac{3}{2}x+9[/tex]

Help T-T I’m a bit stuck

Answers

Answer:

It is the 3rd option. If it doesn't have a line below it, the circle should be open. And where the arrow points is where your line should go if that makes sense.

Step-by-step explanation:

Prove that the conjecture is false by providing a counter example.

Answers

Answer:

Any negative number would be a counterexample.

Step-by-step explanation:

Since negative numbers get smaller as you multiply them by a larger number, this would prove this conjecture false.

CAN SOMEBODY PLZ ANSWER ALL THESE CORRECT THANKS!!!!
(Only if u know how to do this)

WILL MARK BRAINLIEST :D

Answers

Answer:

ok look at comments for answers

Step-by-step explanation:

Answer:

24. -3, -1, 0, +1, +3

25. -4, -3, -2, +1, +2

26. -1, 0, +5, +7, +8

27. -7, -4, 0, +2, +3

28. -3, -2, -1, +4, +6

29. -11, -7, -4, +1, +3

:)

Is the side length √ 23+3 rational or irrational? Explain your reasoning.
100 points but If you answer something random I will report.

Answers

Answer:

Irrational

Step-by-step explanation:

[tex] \sqrt{23 + 3 } = \sqrt{26} [/tex]

An irrational number is a number that cannot be written as a fraction. Therefore √26 is an irrational number.

Irrational

Step-by-step explanation:

An irrational number is a number that cannot be written as a fraction. Which means that √23 is an irrational number.

Will give brainliest A school chess club needs to raise at least $750 to attend a state competition. The club has already raised $400 and there are 4 months remaining until the competition. Which inequality and statement can be used to determine the dollar amount the club will need to raise during the remaining months?

Answers

Answer:

They need to raise $350 to attend the state competition.

Step-by-step explanation:

Answer:

$350

Step-by-step explanation:

750-400=350

The chess club needs to make $350 in a matter of four months to go to the state competition.

An electronics manufacturer has 175 capacitors and the same number of capacitors is needed for each circuit board made. The manufacturer uses the capacitors to make 35 circuit boards. Identify and interpret the intercepts, then use the intercepts to graph the line

Answers

Animals eat grass except for carnivals but they all live till they dies in a clan of the

Answer:

its on google

Step-by-step explanation:

Student ID number consists of 6 characters. The first four
characters can be any number 1-9 without restrictions. The
last two characters are letters and cannot repeat. How
many student IDs are possible?
a) 6,760,000
b) 4,264,650
O C) 6,500,000
d) 78
Please hurry

Answers

Answer:

b. 4,264,650

Step-by-step explanation:

(9 * 9 * 9 * 9) * (26 * 25)

What is Y?
8.4=y-4.6

Answers

Answer:

13

Step-by-step explanation:

8.4 = 13-4.6

8.4 = 8.4

Answer: y=13

Step-by-step explanation:

Home Algebra 1 Support Final Exam Term 1
y = 3x - 1
y = -3x - 1
Which describes the number of solution(s) to the system of linear equations shown above?
C
Exactly two
None
A
An infinite number
D
B
Exactly one

Answers

Answer:

B. Exactly one solution

Step-by-step explanation:

Here's something that I learned. Same slope different y-intercept (no solution). Same slope and same y-intercept (Infinitely many solutions). Different slope and same y-intercept (one solution). Different slope and different y-intercept (one solution).

What is the answer I feel like this is wrong?

Answers

It's C! Substitute f(x) for 8 to get 8=x/2+5 then subtract 5 from both sides to get 3=x/2 then multiply both sides by 2 to isolate x and you get 6=x!

Answer:

x = 6

Step-by-step explanation:

8 = (x/2) + 5

subtract 5 by both sides

3 = (x/2)

multiply by 2 on both sides

6 = x

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