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2 years ago

2. You want to buy some beans. A

Mathematics

1 answer:

Ber [7]2 years ago

4 0

Answer:

Step-by-step explanation:

Remark

If you find out the cost of 1 oz of each of them, that will determine the best buy. The smallest number is the best buy.

Givens

7 oz cost $2.38

15 oz cost $5.25

26 oz cost $8.58

Solution

7 oz cost $2.38

1 oz cost x This is a proportion. 3 quatities are known. Find x Cross multiply.

7/1 = 2.38/x

7x = 2.38

x = $0.34 dollars

15 oz cost 5.25

1 oz costs x

15.1/1 = 5,25 x Cross Multiply

15x = 5.25 * 1 Divide by 15

x = 5.25 / 15

x = $0.35

26 oz cost 8.58

1 oz cost x

26/1 = 8.38/x Cross Multiply

26x = 8.38 Divide by 26

x = 8.38/20

x = 0.32 dollars

Answer

7 oz cost 0.34

15 oz cost 0.35

26 oz cost 0.32

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Answer:

The total length (in units) of the biking trail is 17 units.

Step-by-step explanation:

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So, the distance PQ will be calculated as:

$PQ = \sqrt{(5^{}-(-2)^{})^{2}+(2^{}-2^{})^{2}$

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Then the trail goes from Q(5, 2) to R(5, −5).

So, the distance QR will be calculated as:

$QR = \sqrt{(x^{2}-x^{1})^{2}+(y^{2}-y^{1})^{2}}$

$QR = \sqrt{(5^{}-5^{})^{2}+(-5^{}-2^{})^{2}$

QR = 7 units

And then from R(5, −5) to S(8, −5).

$RS = \sqrt{(8^{}-5^{})^{2}+(-5^{}-(-5)^{})^{2}}$

QR = 3 units

Hence, the total length of the biking trail is:

PQ + QR + QR = 7 + 7 + 3 = 17 units

Keywords: distance formula, length

Learn more about distance formula to find length from brainly.com/question/10903929

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