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ValentinkaMS [17]
3 years ago
14

Marcus said the product of 78 × 134 is 94. How can you tell that his answer is wrong?

Mathematics
1 answer:
QveST [7]3 years ago
7 0
You can use estimation.

80×130=10,400

Clearly 10,400 and 94 are way off.
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Answer:

Step-by-step explanation:

We are told that the perimeter is 48 = 2L + 2W.  This reduces to

24 = L + W.  Next, substitute, one by one, the 3 widths 10 cm, 3.6 cm and w cm:

a)  If W = 10 cm, 24 = L + W becomes 24 = L + 10, or L = 14 cm

b)  If W = 3.6 cm, 24 = L + W becomes 24 = L + 3.6, or L = 20.6 cm

c)  If W = w, 24 L + W becomes 24 = L + w, so that L = (24 - w) cm

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3 years ago
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78.5 in.²

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Answer:

x = - 2, x = 7

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Equate each factor to zero and solve for x

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(4c-1)(y+3)

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