Light A flashes every 8 seconds.
Light B flashes every 20 seconds.
Both lights flash at the same time.
Work out how long it will take for both lights to flash at the same time
again.

Answers

Answer 1

Answer:

40 seconds

Step-by-step explanation:

8         20

16        40

32

40

40 seconds

Answer 2

It will take 40seconds to both the lights to flash at the same time again.

What is Least common multiple?

" Least common multiple is defined as the smallest common multiple of the given set of numbers."

According to the question,

Given ,

Time to flash Light A is  every 8 seconds.

Time to flash Light B is every 20 seconds.

Condition given

Both the lights flash at the same time

Least common multiple (8, 20) = 40seconds

Light A flashes in

8seconds , 16seconds , 24seconds , 32seconds, 40seconds

Light B flashes in

20seconds , 40seconds

Hence, both the light flashes at the same time again is at 40seconds.

Learn more about least common multiple here

https://brainly.com/question/11533141

#SPJ2


Related Questions

Can someone help me please?

Answers

Answer:

(0, -10), (2, 0), (-2, -50)

Step-by-step explanation:

Plug in numbers for the x and solve for it

I will start with 0

y = 5(0 - 1)^2 - 5

y = 5(-1) - 5

y = -5 - 5

y = -10

2

y = 5(2 - 1)^2 - 5

y = 5(1) - 5

y = 5 - 5

y = 0

-2

y = 5(-2 - 1)^2 - 5

y = 5(-9) -5

y = -45 - 5

y = -50

You just keep plugging in numbers until your graph finds its shape. Of course, you can chart the numbers I have already found.

Someone pls help. Write the equation in standard form

Answers

Answer:

Step-by-step explanation:

Since, zeros of the relation are 5, 6 and y-intercept is (0, 30).

Therefore, equation of the quadratic relation will be in the form of,

y = a(x - 5)(x - 6)

For (0, 30),

30 = a(0 - 5)(0 - 6)

30 = 30a

a = 1

Therefore, equation will be,

y = (x - 5)(x - 6)

y = x² - 11x + 30

y = x²- 2(5.5)x + (5.5)² - (5.5)² + 30

y = (x - 5.5)²+ 30 - 30.25

y = (x - 5.5)² - 0.25 [Standard form}  

b). Vertex → (-4, -7) and passes through a point (-2, 1)

Vertex form or standard equation of the quadratic relation is,

y = a(x - h)² + k

Here, (h, k) is the vertex

Therefore, equation will be,

y = a(x + 4)² - 7

Since, (-2, 1) lies on this relation

1 = a(-2 + 4)² - 7

a(2)²- 7 = 1

4a = 8

a = 2

Equation will be,

y = 2(x + 4)²- 7

8 x 9/9_ 8
>
<
=
pls help my teacher will yell at me:(

Answers

Answer:

=

Hope that helps!

Step-by-step explanation:

Part B Isabella's mother sells the peas and gets $3 for each square foot. So, multiply your answer from Part A by 3 to calculate how much money Isabella's mother made.

Answers

Answer:

See Explanation

Step-by-step explanation:

The question is incomplete as the solution to part A (or part A itself) is not given. To solve this, I will assume a value to the supposes solution to part A.

From the question:

1 square foot is sold at $3.

This implies that:

p square foot will be sold at $3p.

So, total sales can be calculated using:

[tex]Total = 3p[/tex]

Now assume that p is 10 square feet (from part A).

The total will be:

[tex]Total = 3*10[/tex]

[tex]Total = \$30[/tex]

Someone please help and please hurry due in 13 minutes :(

Answers

answer: corresponding

A bag contains 3 red marbles, 7 blue marbles and 8 green marbles. If three marbles are drawn out of the bag, what is the exact probability that all three marbles drawn will be green?​

Answers

Answer:

4/9

Step-by-step explanation:

8/18 x 7/17 x 6/16 = 336/4896 = 0.06863 = 6.863% = 6.9\%

≈0.06863=6.863%≈6.9%

Which expression represents
60
6060 divided by the product of
4
44 and
3
33?
Choose 1 answer:
Choose 1 answer:

Answers

6060 divided by the products

Answer:

6060 divided by the product of 4

Step-by-step explanation:

A car travels at 85.5 miles in 2 hours and 15 minutes. Calculate the average speed.

Answers

Answer:

38 mph

Have a nice day

find the area of the figure ​

Answers

Answer:

area of shaded region={6+7)×8-1/2×7×8=76 ft²

Answer:

The area of the purple is 76 feet.

Step-by-step explanation:

8 * 6 = 48

the full rectangle is 48ft in area

7 * 8 = 56

56 / 2 = 28

48 + 28 = 76ft

plz mark as brainliest if correct!

Find the missing sides

Answers

Answer:

choice b)

h = 13

g = 18.38 or 13sqrt 2

Step-by-step explanation:

tan 45 = h/13

1 = h/13

h = 13

cos 45 = 13/g

0.7071 = 13/g

g = 18.38

Please help ASAP thank you

Answers

Step-by-step explanation:

5/8-7/8=2/8 so that is the height

the width is 1/2

and the length is 3/8

you have too multiply 1/2 and 3/8 which is 3/16.

hope this is correct and helps u out

please help me! :(
i'll mark you brainliest <3 20 point
(maths)

Answers

Answer: a) 4 b) you could make up to 8 liters

Step-by-step explanation:

Answer:

See Below! :)

Step-by-step explanation:

The answer to a is just 1.5 x 8

The answer to b is no

Hope this Helps! :D

. Graham bought 45 bags of potatoes. Each bag weighed exactly 4pounds.How many pounds of potatoes did he buy?

Answers

multiply 45 by 4
=180 pounds of potatoes

Wayne spends 1/6th of an hour walking his dog. How much time does Wayne spend walking his dog in a week? *

Answers

Answer:

10 minutes

Step-by-step explanation:

This is somewhat of a trick question and also incomplete.

Assuming he walks his dog 1/6th of an hour each week, he walks his dog 10 minutes per week.

If this is incorrect please tell me the complete question

WILL GIVE BRAINLIEST!!!!!!!!!!!
Sally would like to have an average of 92 in her math class. She has completed four assignments with the following grades: 88, 97, 91, 86. What is the lowest grade Sally will need to make on the last assignment to meet her goal?

Answers

Answer:

She need to make 98 on the last assignment.

Step-by-step explanation:

Average = 92

x = mark on last assignment

(88 + 97 + 91 + 86 + x) / 5 = 92

To solve for x...multiply 5 on each side

(88 + 97 + 91 + 86 + x) / 5 * 5 = 92*5

This would get of / 5 so you don't need to divide by 5

362 + x = 460

Subtract 362 from each side

x = 98

PLS HELP WILL MARK BRAINLIEST

Answers

Answer:

looks like 73

Step-by-step explanation:

Evaluate the function at the given value. If g(x)=9x-8 find g(x+6) and g(x)+g(6)

Answers

Answer:

MARISSA WHATS THE SNAP I BET U BAD

Step-by-step explanation:

HELP NEEDED ASAP PLZZZZZZ

Michele is making a kite based on the pattern below. About how much binding does Michele need to cover the edges of the kite?

Answers

Answer:

about 52.1 in.

Step-by-step explanation:

PM=PE=5 inches, PR=4 inches, and OP=19 inches.

Since the figure is a kite, the diagonals ME and OR are perpendicular and form right triangles with their hypotenuses forming the sides of the kite, OM, MR, RE, and EO.

The figure shows the same kite O M R E as in the beginning of the task. Diagonal O R is perpendicular to diagonal M E.

Use the Pythagorean Theorem to calculate the length of OM.

OM=OP2+PM2−−−−−−−−−−√

Substitute 19 for OP and 5 for PM.

OM=192+52−−−−−−−√

=361+25−−−−−−−√

=386−−−√

Therefore, OM=386−−−√ in.

By the definition of a kite, OM≅EO. So, EO is also equal to 386−−−√ inches.

Use the Pythagorean Theorem to calculate the length of MR.

MR=PM2+PR2−−−−−−−−−−√

Substitute 5 for PM and 4 for PR.

MR=52+42−−−−−−√

=25+16−−−−−−√

=41−−√

Therefore, MR=41−−√ in.

By the definition of a kite, MR≅RE. So, RE is also equal to 41−−√ inches.

The figure shows the same kite O M R E as in the beginning of the task. Sides O M and E O are square root of 386 inches long. Sides M R and R E are square root of 41 inches long.

The perimeter of the kite is the sum of the four sides.

Perimeter of OMRE=OM+MR+RE+EO

=386−−−√+41−−√+41−−√+386−−−√

=2386−−−√+241−−√

Use a calculator to approximate.

Perimeter of OMRE≈52.1 in.

So, the perimeter of OMRE is about 52.1 inches.

Therefore, about 52.1 inches of binding are needed to cover the edges of the kite.

am not sure what am doing​

Answers

Answer:

Step-by-step explanation:

They are showing you how to factor 12-9i+8i-6i².

Find the greatest common factor in each row and each column.

Blue:  GCF of 12 and -9i = 3

Orange: GCF of 8i and -6i² = 2i

Red: GCF of 12 an 8i = 4

Green: GCF of -9i and -6i² = 3i, but both terms are negative, so use -3i

Find the value of x.​ Will give brainliest

Answers

Step-by-step explanation:

[tex] \frac{ \sin(38) }{15} = \frac{ \sin(68) }{x} \\ x = \frac{15 \sin(68) }{ \sin(38) } = 22.58 = 22.6[/tex]

What is the probability of rolling a 2 or 6 on a six-sided number cube?

Answers

Answer:

likely .

Step-by-step explanation:

Answer:

2 out of 6 chance

Step-by-step explanation:

someone help me it’s timed!!

Answers

Answer:

29

Step-by-step explanation:

??? i mean 12 + 6 + 11??? 29??

Answer:

29

Step-by-step explanation:

12+6+11=29

3x-6y=30 solve for x

Answers

Answer:

Step-by-step explanation:

x = 10+2y

Answer:

answer: x = 10 + 2y

Step-by-step explanation:

Move all terms that don't contain x to the right side and solve.

Simplify 4.510.
a 4.51


b 1

Answers

Answer:

a

Step-by-step explanation:

Answer:

4.51

Step-by-step explanation:

i need more letters ksksksks

HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP

Suppose on average, a high school loses about 5 students each year, because they leave to attend a charter school. Which best describes this relationship?

A. A linear function because the students are decreasing by 5 each year.
B. An exponential function because the students are decreasing by 5 each year.
C. An exponential function because there is a 5% decay.
D. A linear function because there is a 5% decay.

Answers

The answer to this is A
Ummmm the answer is A

I do not know what they are asking here, and how to find it.​

Answers

Answer:

Step-by-step explanation:

they want the values of y and x.

DA=BC

DC=AB

so we can tell that given that E is an intersection:

DE=BE

CE=AE

Someone plz help me

Answers

Answer:

Decagon

Step-by-step explanation:

A decagon has 10 vertices. which is greater than the number of vertices a pentagon, hexagon, and octagon has

I think it is decagon

Decide if the answer to 9/9x 7 is less than, greater than, or more than equal to 7.

Answers

Answer:

Equal to

Step-by-step explanation:

Answer:

9/9 X 7 Equals to 7

Step-by-step explanation:

9 divided by 9 is 1.

1 X 7 = 7.

7=7 so the answer is Equal to

Question 9
Estimate the square root of 6 rounded to the nearest tenth

Answers

2.4 , please mark brainliest

Answer:

2.4

Step-by-step explanation:

Step 1: Calculate

Calculate the square root of 6 to be:

√6 = 2.44948974278318

Step 2: Reduce

Reduce the tail of the answer above to two numbers after the decimal point:

2.44

Step 3: Round

Round 2.44 so you only have one digit after the decimal point to get the answer:

2.4

HELP PLEASE

x^2-2x-5

Answers

Step-by-step explanation:

the answer for this question is -6x

The answer for this question is is -6x
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