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Mice21
14 days ago
13

Sari estimated the quotient of 120.78 ÷ 9.9 to be 12. She said that her estimate is slightly greater than the actual answer. Is

she correct? Is her estimate reasonable? Explain.
Mathematics
2 answers:
tester [3.9K]14 days ago
6 0
Sari's claim is incorrect because dividing 120.78 by 9.9 equals approximately 12.2, and since 12 is less than 12.2, her estimate is not actually greater than the true result.
Zina [3.9K]14 days ago
4 0

Answer: Sari’s estimate was reasonable, but her belief that it slightly exceeds the actual quotient is wrong. Rounding 120.78 down to 120 and 9.9 up to 10 results in an estimate lower than the true value because the dividend is reduced and the divisor is increased.

Step-by-step explanation:

Hope this helps :D

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Which composition of similarity transformations maps polygon ABCD to polygon A'B'C'D'?
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Answer:

A scale transformation that contracts and is subsequently followed by a reflection.

Step-by-step explanation:

A contraction with a scale factor less than 1, followed by a reflection, constitutes the combination of similarity transformations that maps polygon ABCD to polygon A'B'C'D.

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10 days ago
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The total number of bills and coins is 14.

Step-by-step explanation:

To minimize the count of bills and coins, start with the largest denominations that fit within the amount.

The change due is $39.49.

Start with:

-$20 bill (largest under $39.49)

Remaining: $19.49

-$10 bill (largest under $19.49)

Remaining: $9.49

-$5 bill (largest under $9.49)

Remaining: $4.49

Then:

4 × $1 bills (to cover $4.49)

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The final composition includes:

1 twenty-dollar bill

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354

Detailed explanation:

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4 days ago
There are seven boys and five girls in a class. The teacher randomly selects three different students to answer questions. The f
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This simplifies to:

\frac{7}{66}

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