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
bezimeni [28]
3 years ago
12

Can someone help me please

Mathematics
1 answer:
Neporo4naja [7]3 years ago
5 0

If Deliah does jumping jacks at a constant rate, this means that she does them at the same pace or you could say that she does the same amount of jumping jacks in a specified amount of time, ie. if you counted how many jumping jacks she did in one minute, it would be same as how many she would complete in the next minute, and the next, and so on.

Now given that she does 184 jumping jacks in four minutes, and she has kept a constant pace throughout, to find out how many she does each minute, we simply need to divide the number of jumping jacks she does in 4 minutes by 4. Thus:

Jumping jacks in 1 minute = Jumping jacks in 4 minutes / 4

= 184 / 4

= 46

Thus, Deliah can do 46 jumping jacks per minute.

You might be interested in
At a large university, the mean amount spent by students for cell phone service is $58.90 per month with a standard deviation of
zhenek [66]

Answer:

2.28% probability that the mean amount of their monthly cell phone bills is more than $60

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal probability distribution

Problems of normally distributed samples are 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.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

In this problem, we have that:

\mu = 58.90, \sigma = 3.64, n = 44, s = \frac{3.64}{\sqrt{44}} = 0.54875

What is the probability that the mean amount of their monthly cell phone bills is more than $60?

This is 1 subtracted by the pvalue of Z when X = 60. So

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

By the Central Limit Theorem

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

Z = \frac{60 - 58.90}{0.54875}

Z = 2

Z = 2 has a pvalue of 0.9772

1 - 0.9772 = 0.0228

2.28% probability that the mean amount of their monthly cell phone bills is more than $60

4 0
3 years ago
The sides of a rectangle are a number and 4 less than that same number. The perimeter is 56. Find the dimensions of the rectangl
mafiozo [28]
X+x+x-4+x-4=56
4x-8=56
4x=64
x=16

4 0
3 years ago
Find the L.C.M of the given pair of numbers using the prime factors method. 70 and 84​
Allisa [31]

2| 70,84

2|35,42

3|35,21

5|35,7

.|5,7

LCM=2×2×3×5×5×7=2100

5 0
3 years ago
Read 2 more answers
Y varies inversely with x. If y = -8 when x = -7, find the y when x=-4.
lora16 [44]

Answer:

y =-14

Step-by-step explanation:

Inverse variation is of the form

xy = k where k is a constant

(-7)(-8) = k

56 = k

The equation is

xy = 56

Let x = -4

(-4)y = 56

y = 56/-4

y =-14

8 0
3 years ago
Where is each located in a multiplication problem
Verdich [7]
???/where is what located 
7 0
3 years ago
Other questions:
  • If, in a quadratic equation, the values of a and c have opposite signs, the solutions of the equation are real numbers.
    6·1 answer
  • Margo purchase teas from a warehouse and marks up the price 20%. When teas got unsold for two mouths, she marked the price down
    13·1 answer
  • The length of a rectangle is 3 times its width. If the length were increased by 2 inches and the width by 1 inch, the new perime
    11·2 answers
  • Gideon wants to buy a new video game from the store. They are having a sale on all games, and sell the game at a 15% discount. H
    12·1 answer
  • 2(2x-6)=28 please help
    8·1 answer
  • An architect was asked to build a special staircase in a new building. The staircase will be built like a helix that rotates aro
    12·1 answer
  • In 6n + 8, n is best described as
    5·1 answer
  • Use the properties of exponents to simplify.
    14·1 answer
  • Apply the distributive property to factor out the greatest common factor.<br> 35+50=
    10·1 answer
  • 8 kilómetros a metros
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!