1answer.
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
Maurinko [17]
3 years ago
7

christian and steven are learning how to ski. Justin falls down every 30 feet. mike falls down every 25 feet. if they both start

skiing from the same point, how far is the first point where they will both fall down?
Mathematics
1 answer:
kondaur [170]3 years ago
3 0

Answer:

150

Step-by-step explanation:

find lcm

30:30 60 90 120 150

25:25 50 75 100 125 150

You might be interested in
What is the local maximum?
Ostrovityanka [42]

Answer:

2,-2

In mathematical analysis, the maxima and minima of a function, known collectively as extrema, are the largest and smallest value of the function, either within a given range, or on the entire domain.

5 0
2 years ago
The sum of two rational numbers is what
ludmilkaskok [199]

Answer:

Is rational

Step-by-step explanation:

So, adding two rationals is the same as adding two such fractions, which will result in another fraction of this same form since integers are closed under addition and multiplication. Thus, adding two rational numbers produces another rational number.

7 0
3 years ago
Suppose that you take a sample of 250 adults. If the population proportion of adults who watch news videos is 0.58​, what is the
aliina [53]

Answer:

0.36% probability that fewer than half in your sample will watch news​ videos

Step-by-step explanation:

To solve this question, i am going to use the binomial approximation to the normal.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

Can be approximated to a normal distribution, using the expected value and the standard deviation.

The expected value of the binomial distribution is:

E(X) = np

The standard deviation of the binomial distribution is:

\sqrt{V(X)} = \sqrt{np(1-p)}

Normal probability distribution

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

When we are approximating a binomial distribution to a normal one, we have that \mu = E(X), \sigma = \sqrt{V(X)}.

In this problem, we have that:

n = 250, p = 0.58

So

\mu = E(X) = 250*0.58 = 145

\sigma = \sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{250*0.58*0.42} = 7.80

If the population proportion of adults who watch news videos is 0.58​, what is the probability that fewer than half in your sample will watch news​ videos

Half: 0.5*250 = 125

Less than half is 124 or less

So this is the pvalue of Z when X = 124

Z = \frac{X - \mu}{\sigma}

Z = \frac{124 - 145}{7.8}

Z = -2.69

Z = -2.69 has a pvalue of 0.0036

0.36% probability that fewer than half in your sample will watch news​ videos

8 0
3 years ago
Read 2 more answers
No wrong answers & NO LINKS , RIGHT answers only please.
vredina [299]

Answer:

Step-by-step explanation:

sin(x)=1.5/2.6

x=35.2

4 0
2 years ago
A wire is ⅝ meters long. it is divided into 2 equal parts. what is the length of each part​
mote1985 [20]

Answer:

5/16m long.

Step-by-step explanation:

  • 5/8  ÷  2/1
  • 5/8  ×  1/2
  •    =5/16m long.
7 0
2 years ago
Read 2 more answers
Other questions:
  • a home onwer reads the paperwork for a water filter he has attached to his kitchen faucet.the instructions say the filter can cl
    10·1 answer
  • The graph shows y as a function of x: In which segment is the function constant?
    6·2 answers
  • Consist of even number between 30 and 49
    14·1 answer
  • Help! 20 points svhs
    11·2 answers
  • It is said that a student’s college GPA (grade point index) can be predicted by his/her HOCS (higher- order cognitive skills) su
    12·1 answer
  • AP CAL AB HELP!
    6·1 answer
  • Pls pls help I don’t have time HELP ASAP. It also detects if it’s right or wrong.
    14·1 answer
  • Ramos spends $36.00 on a t-shirt and spends $20.00 on a hot dog.
    5·1 answer
  • Please help me I really need help with this
    7·1 answer
  • HURRY!! WILL GIVE BRAINLIEST
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!