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Korvikt [17]
2 years ago
7

Determine which is the better buy. 7 kilograms of wood for $13.65 or 5 kilograms of wood for $7.50. What is the unit price for e

ach? Explain how you determined which one is the better buy. Get right, I'll give you brainliest
Mathematics
1 answer:
torisob [31]2 years ago
5 0

Answer:

The wood for 7.50!

Step-by-step explanation:

You are trying to find the unit rate in this situation!

It's simple, Cost ÷ Amount/Weight

13.65 ÷ 7 = 1.95

7.50 ÷ 5 = 1.50

Clearly, the wood for 7.50 is the better buy!

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3 a western beach is reducing width by 10 feet every 5 years for the first 10 years the patter then became less constant dunes b
Anna71 [15]

A. Western Beach is reducing was width by 10 feet every 5 years for the first 10 years, then the pattern became less constant. Dunes Beach experienced a stable and fast increase in width, 25 feet every 5 years of 5 feet per year.

B. Somewhere between years 11 and 12 they had the same width.

C. You can place the values on a graph and connect the points, and look at the intersections to determine points in time where they were of the same width.

First, lets look at the data. Western Beach (or WB for short) decreases its width by 10 feet every 5 years from year 0 to year 10. Between year 11 and year 15 the pattern shifts and becomes less changing since there is barely any change between years 12 and 15. Dunes Beach (or DB) increases steadily by 25 feet every 5 years or 5 feet per year.

Assuming the changes in width happen over time and gradually, at some point between year 10 and 11, both beaches would have likely had the same width, somewhere between 70 and 75.

To determine the exact point in time where they meet we would need to draw a graph, with the width in feet on the X axis and the year on the Y axis. Then we place all the pairs in the graph by their coordinates, and connect the points that correspond to each beach. We then see where the lines intersect and use mathematics to determine the values of X and Y, giving us the time and width when the two beaches were equal.

please mark me brainliest it helps to become an genius

4 0
2 years ago
Can you solve some of these? Or all, whichever one you might know. Also explain please.
Rina8888 [55]
Here's number 5. If you need more explanation just let me know.

8 0
3 years ago
What is the probability that someone in chicago is stung by a bee
AysviL [449]

Step-by-step explanation:

0.075 % is the probability of that

6 0
2 years ago
Consider the set of differences, denoted with d, between two dependent sets: 84, 85, 83, 63, 61, 100, 98. Find the sample standa
sveta [45]

Answer:

The sample standard deviation is 15.3.

Step-by-step explanation:

Given data items,

84, 85, 83, 63, 61, 100, 98,

Number of data items, N = 7,

Let x represents the data item,

Mean of the data points,

\bar{x}=\frac{84+85+83+63+61+100+98}{7}

=82

Hence, sample standard deviation would be,

\sigma= \sqrt{\frac{1}{N-1}\sum_{i=1}^{N} (x_i-\bar{x})^2}

=\sqrt{\frac{1}{6}\sum_{i=1}^{7} (x_i-82)^2}

=\sqrt{\frac{1}{6}\times 1396}

=\sqrt{232.666666667}

=15.2534149182

\approx 15.3

4 0
2 years ago
Divide and answer.<br> 2/3 =
Serggg [28]

The Answer to your problem is:


0.666667

6 0
3 years ago
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