answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
GaryK [48]
2 years ago
15

Simon can see two lights, light A and light B.

Mathematics
1 answer:
Vaselesa [24]2 years ago
4 0

Answer:

2 Times

Step-by-step explanation:

Light A flashes every 15 seconds.

Light B flashes every 18 seconds.

First, we determine the next time both lights will flash together.

This is done by finding the Least Common Multiple of the two numbers.

15=3X5

18=2X3^2

LCM of 15 and 18=2X3^2X5=90

This means that both lights will flash together after 90 seconds.

Now, 4 Minutes =4 X 60 =240

240=90+90+60

Therefore, the number of times more both light will flash together in the next 4 Minutes

= 2 Times

You might be interested in
Calendar: discount, 75%, sale price, $2.25, find the orignal sale price
Monica [59]
The original cost is $3.00.

Hope this helps and if someone else comments put mine brainliest.
8 0
2 years ago
Read 2 more answers
Robyn opened a bank account to save her birthday money. It was paying 3.75% interest. Then the interest rate went up by 0.65%. H
Leokris [45]
The interest rate is 4.4
4 0
2 years ago
Read 2 more answers
A sample with a sample proportion of 0.4 and which of the following sizes will produce the widest 95% confidence interval when e
Fed [463]

Answer:

C. 50

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

The margin of error is:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

The higher the margin of error, the wider an interval is.

As the sample size increases, the margin of error decreases. If we want a widest possible interval, we should select the smallest possible confidence interval.

So the correct answer is:

C. 50

6 0
2 years ago
Mafalda has a save percentage of 0.7380.7380, point, 738 so far this hockey season. Last season, her save percentage was 0.5850.
Snowcat [4.5K]

Answer:

0.153

Step-by-step explanation:

We have been given that Mafalda has a save percentage of 0.738 so far this hockey season. Last season, her save percentage was 0.585.

To find improvement in Mafalda's save percentage we will subtract last season's save percentage from this season's save percentage.

0.738-0.585=0.153

Therefore, Mafalda's save percentage improved by 0.153.

6 0
2 years ago
Read 2 more answers
Martinez Co. sells a machine that cost $10,000 with accumulated depreciation of $8,000 for $2,000 cash. The entry to record this
Sveta_85 [38]

Answer:

Step-by-step explanation:

8 0
2 years ago
Other questions:
  • An apartment building has 20 two-bedroom apartments and 8 three-bedroom apartments. If 4 apartments are chosen at random to be r
    13·2 answers
  • A school baseball team raised $810 for new uniforms. each player on the team sold one book of tickets. there were 10 tickets in
    13·1 answer
  • Please Help!!
    5·2 answers
  • Complete the statement if m gdf = 54 then m edf =
    9·2 answers
  • Premier Bank is planning to have a new building constructed. They would like the length of the building to be 40 feet longer tha
    11·2 answers
  • Stanley has a collection of seashells. He found 35% of his collection on Florida beaches. If Stanley has 49 seashells from Flori
    10·1 answer
  • The factory quality control department discovers that the conditional probability of making a manufacturing mistake in its preci
    15·1 answer
  • Z^5=-7776i
    13·1 answer
  • Suppose that J and K are points on the number line.
    7·1 answer
  • How many solutions exist for the mixed-degree system graphed below?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!