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Gnesinka [82]
3 years ago
12

1) What is the value of the expression 3 4 + 15.45 - 19.75 + 7.87?

Mathematics
1 answer:
Delvig [45]3 years ago
6 0

Answer:

37.57

Step-by-step explanation:

34 + 15.45 - 19.75 + 7.87

34 + 15.45 = 49.45

49.45 - 19.75 + 7.87

49.45 + 7.87 = 57.32

57.32 - 19.75 = 37.57

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The area of the second rectangle is therefore 16*20 = 320 square meters.

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The 4^2 = 16 multiplier is the result of squaring the scale factor.

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