3 years ago

Describe how a model can help you round a decimal.

Mathematics

1 answer:

Katarina [22]3 years ago

6 0

Answer:

you dint put up the pictures so not sure

Step-by-step explanation:

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What is the answer (×+3) (×+7)

kap26 [50]

$x^{2} +10x+21$ . Use FOIL to do this.

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3 years ago

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Two planes A and B start from the same place and move in different directions making an angle of 50° between them the speed of p

Alika [10]

Answer:

The distance between them is 230.65 miles

Step-by-step explanation:

Here we use the Cosine formula

$a^2 = b^2 + c^2 - 2bc\ cos\ A\\\\a^2 = 200^2 + 300^2 - 2\times 200\times 300cos50^{\circ}\\\\= 40,000 + 90,000 - 120,000cos50^{\circ}\\\\= 130,000 - 120,000 \times 0.64\\\\= 130,000 - 76,800\\\\a^2= 53,200\\\\a = \sqrt{53,200} \\\\= 230.65\ miles\ per\ hour$