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
vitfil [10]
3 years ago
7

What is the answer to this equation 40-32/8+5•-2

Mathematics
1 answer:
KiRa [710]3 years ago
7 0

Answer:26

Step-by-step explanation

You might be interested in
Factor the expression -8x 2+ 22x - 15
Paladinen [302]

The  answer is: 3(2x-5)

6 0
2 years ago
Read 2 more answers
A city's bus line is used more as the urban population density increases. The more people in an area, the more likely
Oliga [24]

Answer:

A

Step-by-step explanation:

ON EDGE

6 0
3 years ago
What is the length of the longer leg of the right triangle?
Anvisha [2.4K]

Answer:

8 units

Step-by-step explanation:

The longer leg extends upward from y = -3 to y = 5, so its length is 8 units.

5 0
3 years ago
A sample size 25 is picked up at random from a population which is normally
Margarita [4]

Answer:

a) P(X < 99) = 0.2033.

b) P(98 < X < 100) = 0.4525

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 normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score 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 p-value, 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.

Mean of 100 and variance of 36.

This means that \mu = 100, \sigma = \sqrt{36} = 6

Sample of 25:

This means that n = 25, s = \frac{6}{\sqrt{25}} = 1.2

(a) P(X<99)

This is the pvalue of Z when X = 99. So

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

By the Central Limit Theorem

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

Z = \frac{99 - 100}{1.2}

Z = -0.83

Z = -0.83 has a pvalue of 0.2033. So

P(X < 99) = 0.2033.

b) P(98 < X < 100)

This is the pvalue of Z when X = 100 subtracted by the pvalue of Z when X = 98. So

X = 100

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

Z = \frac{100 - 100}{1.2}

Z = 0

Z = 0 has a pvalue of 0.5

X = 98

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

Z = \frac{98 - 100}{1.2}

Z = -1.67

Z = -1.67 has a pvalue of 0.0475

0.5 - 0.0475 = 0.4525

So

P(98 < X < 100) = 0.4525

6 0
2 years ago
What is the probability of pulling a heart
maw [93]

Answer: The probability of drawing a heart out of the deck is 13/52, or 1/4. The probability of drawing an even number as card #2 (c∈{2,4,6,8,10}) for any suit is 20/51, except when the first card drawn is an even heart, then the probability of the second draw is 19/51.

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Other questions:
  • If each dimension of the rectangular prism is doubled, how will its total surface area change?
    10·2 answers
  • Put this into Y=Mx+B form please​
    5·1 answer
  • What is the best approximation of the solution to the system to the nearest integer values?
    10·2 answers
  • Solve for x. 5x+4=9<br> Can you help me out?
    5·1 answer
  • Please help with this question!!!
    15·1 answer
  • You have to say the time and the clocks are inverted btw
    7·2 answers
  • Help me pls somebody
    8·1 answer
  • The map shows the location of four places in a school.
    12·1 answer
  • What is the area of the figure? Answer in decimal form to the nearest hundredth.
    7·2 answers
  • Which step would successfully eliminate y from the system below?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!