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schepotkina [342]
2 years ago
13

A square of side 4cm is enlarged by a scale factor 2.5. What is the are of the enlarged square

Mathematics
1 answer:
Gnoma [55]2 years ago
6 0

Answer:

10

Step-by-step explanation:

4 * 2.5  = 10

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Read 2 more answers
The mean score on a set of 17 test is 72. Suppose two more students take the test and score 68 and 63. What is the new mean?
Masja [62]

Answer:

New mean=71.32

Step-by-step explanation:

The expression for the total initial score is;

T=M×S

where;

T=total initial score

M=mean score

S=number in the set

replacing;

T=unknown

M=72

S=17

replacing;

T=72×17=1,224

The total initial score=1,224

Determine the total score by;

total score=total initial score+total final score

where;

total initial score=1,224

total final score=(68+63)=131

replacing;

total score=1,224+131=1,355

Determine the new mean;

New mean=total score/new number

where;

total score=1,355

new number=(17+2)=19

replacing;

new mean=1,355/19=71.32

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Help me find the arc length of this. Thank you.
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