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alina1380 [7]
3 years ago
7

A student answered this story problem. Use estimation to check the student's answer. Lizzie has $49. Her older sister has $184.

How much money do they have altogether? Student's answer: They have a total of $233. Which estimate is correct and was the student's answer reasonable?
Mathematics
1 answer:
Anna35 [415]3 years ago
6 0

Answer:No the student was not right.Neither of the estimations were right because she did not estimate at al.

Step-by-step explanation:

1.Round 49 to the nearest ten: 50.

2.Round 184 to the nearest ten:180.

3.Add 50+180 to get 230.

The student was not right because she did not estimate 49 nor 184.

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Question:

The diagram below shows the graph of a proportional relationship. The plotted point is (6,9) .

What is the unit rate of this graph? Be sure to simplify your answer.

Answer:

The unit rate of this graph is 1.5

Explanation:

The graph shows a proportional relationship and the plotted point is (6,9).

The unit rate of the graph can be determined by the formula,

\frac{y_{2}-y_{1}}{x_{2}-x_{1}}=m

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Substituting the coordinates in the formula, we have,

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