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bagirrra123 [75]
2 years ago
14

Lance lived in Portugal and Brazil for a total of 14 months to learn Portuguese. He learned an average of 130 words per month wh

en he lived in Portugal, and an average of 150 new words per month when he lived in Brazil. In total, he learned 1920 new words write a system of equations to represent this situation. Use x to represent Portugal, and y to represent Brazil.
Mathematics
1 answer:
Anuta_ua [19.1K]2 years ago
6 0

Answer:

130x+150y=1,920

Step-by-step explanation:

Why that is the equation is he learned 130 words per month in Portugal and 150 words per month in Brazil. Added together it is 1,920.

So the equation is 130x+150y=1,920.

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In a continuous series, mean(x) = 80, assumed mean(A) = 60 and<br>EF=40 then find the value of EFd.​
Aneli [31]

Using the given information, the value of Σfd is 800

<h3>Calculating mean using Assumed mean </h3>

From the question, we are to determine the value of Σfd

The formula for mean, using the assumed mean method is given by

\bar x = A + \frac{\sum fd}{\sum f}

Where \bar x is the mean

A is the assumed mean

From the given information,

\bar x = 80

A = 60

\sum f = 40

Putting the parameters into the equation, we get

80 = 60 + \frac{\sum fd}{40}

80-60 = \frac{\sum fd}{40}

20 = \frac{\sum fd}{40}

\sum fd = 20 \times 40

\sum fd = 800

Hence, the value of Σfd is 800

Learn more on Mean here: brainly.com/question/20118982

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A 3cm×10cm rectangle sits inside a circle with radius of 12. Find the area of the shaded region
kolezko [41]

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Cottage cheese is being sold in different size containers. The sizes and prices are given below: 4 - 5 ounce containers for $5.
Karolina [17]

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<h3>What is Division?</h3>

The division is the process of finding the number of times a number is multiplied by itself.

The prices of the different size containers are given to us,

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Now, find the cost of the cheese per ounce when we buy the minimum cheese and when we but the maximum amount of cheese.

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If we buy 4 ounces of cheese, then the cost of each ounce of cheese will be $1.25 for each ounce, while if we buy the maximum amount of cheese therefore 5 ounces for $5 then the cost of each ounce of cheese will be $1.

2.  For, the second container, 1-12 ounce container for $3.24

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Step-by-step explanation:

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