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3 years ago

BRAINLESS.... for the following proportion, find the missing quantity represented by the letter.

Mathematics

1 answer:

klio [65]3 years ago

7 0

Answer:

n=56 is the correct answer

3×14=42 so,

4×14=56

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What is the simplified from of the expression? r^-7 + s^-12

pochemuha

Answer:

Step-by-step explanation:

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3 years ago

What is the place value of 4 in 7.047?

Anika [276]

Answer:

2 decimal place?

i am not so sure, but i hope this helps. :)

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3 years ago

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Speed (mph)

nevsk [136]

Answer:

Step-by-step explanation:

In this question, we are asked to calculate the interquartile range of the speed values given in the question.

Firstly, we need to order the values of the speed from the lowest to the highest. That would be;

55 58 65 66 70 72 81

Now, we determine the first quartile position which is Q1. That would be (N+1)/2 where N is the number of data points which is 7 according to this question

We have (7 +1)/4= 8/4= 2

The value at the 2nd position counting from left is 58

For the third quartile , Q3, we have 3 * (N+1)/4 = 3 * 2 = 6

The value at the 6th position counting from left is 72

mathematically, the formula for the interquartile range is Q3 - Q1 = 72 - 58 = 14

6 0

4 years ago

An experiment using 35 guinea pigs is set up to study the weight of the pigs after injecting them with a drug. If the population

jeka94

Answer:

1.1264

Step-by-step explanation:

Given : An experiment using 35 guinea pigs is set up to study the weight of the pigs after injecting them with a drug.

To Find: If the population mean is 23.5 grams with a standard deviation of 3.4 grams, what is the margin of error of the sample mean?

Solution:

n = 35

$\sigma = 3.4$

Confidence interval = 95%. So, z =1.96

Margin of error = $z \times \frac{\sigma}{\sqrt{n}}$

Margin of error = $1.96\times \frac{3.4}{\sqrt{35}}$

Margin of error = $1.1264$

Hence the margin of error of the sample mean is 1.1264.

6 0

3 years ago

Read 2 more answers

Select the graph of the solution. Click until the correct graph appears.<br><br> | x | + 1 < 3

Marat540 [252]

$-2$

The graph of the equation is attached in the figure below

Step-by-step explanation:

We need to make the graph of the equation: $|x|+1$

Solving the equation:

$|x|+1$

Applying absolute rule: |u|<a, a>0 then -a<u<a

So,

$-2$

The graph of the equation is attached in the figure below.

Keywords: Solving inequalities by Graphs

Learn more about solving inequalities at:

#learnwithBrainly

4 0

3 years ago