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laiz [17]
2 years ago
11

3 1/8 - 1 7/8 equals what

Mathematics
1 answer:
o-na [289]2 years ago
8 0

Answer:

=1 1/4 , decimal form is 1.25.

Step-by-step explanation:

3 1/8 - 1 7/8 gives us the answer 1 1/4.

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Last year mr.peterson had a fence all the way around his garden. he can reuse all of the fence he had around the garden last yea
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First, you need to find out the perimeter of the fence and how much of the fence he had around his garden last year (leftovers) and subtract them I think.
4 0
3 years ago
In one month you earned $100 delivering newspapers if you deposit the money in a savings account with a simple interest rate of
saw5 [17]

In 6 months, Simple interest of $6 will be earned for investing $100.

<u>Step-by-step explanation:</u>

Step 1:

Given details are Principal (P) = $100, SI rate (R) = 12%, Time (T) = 6 months = 0.5 years

Step 2:

Calculate Simple Interest by the formula SI = PRT/100

⇒ SI = 100 × 12 × 0.5/100

⇒ SI = $6

6 0
2 years ago
What is the evaluated expression of 512
Evgesh-ka [11]
512 is 2^9 power which can also be written as 8^3 power
7 0
3 years ago
The results of a common standardized test used in psychology research is designed so that the population mean is 145 and the sta
anygoal [31]

The value 155 is zero standard deviations from the mean, because x = μ , and therefore z = 0.

<h3>What is Standard Deviation?</h3>

The standard deviation is a measure of the amount of variation or dispersion of a set of values.

The key concept we need to manage here is the z-scores , and we can obtain a z-score using the next formula:

z = (x - μ)/σ      ..............[1]

Where

z is the z-score.

x is the raw score: an observation from the normally distributed data that we want standardize using [1].

μ is the population mean.

σ is the population standard deviation.

These standardized values have always the same probability in the standard normal distribution, and this is the advantage of using it for calculating probabilities for normally distributed data.

A subject earns a score of 155.

From the question, we know that:

x = 155.

μ = 155

σ = 50

Having into account all the previous information, we can say that the raw score, x = 155, is zero standard deviations units from the mean. The subject earned a score that equals the population mean. Then, using [1]:

z = (x - μ)/σ

z = (155 - 155) / 50

z = 0/50

z = 0

As we say before, the z-score "tells us" the distance from the population mean, and in this case this value equals zero:  

x = μ

Therefore, z = 0

So, the value 155 is zero standard deviations from the [population] mean.

Learn more about Standard Deviation from:

brainly.com/question/13905583

#SPJ1

8 0
2 years ago
What value of x is in the solution set of <br> 3(x-4)&gt;5x+2?
Harrizon [31]

Answer:

=x<-7

If they're asking for work, I'd be glad to show.

5 0
3 years ago
Read 2 more answers
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