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xxTIMURxx [149]
2 years ago
7

How can you solve problems involving equations that contain adding subtracting multiplication or division

Mathematics
1 answer:
kiruha [24]2 years ago
8 0
Use PEMDAS.
Compute in order of parentheses, exponents, multiplication, division, addition, subtraction.
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Mia is standing 210 yd from a radio tower.
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A rectangle has an area of 171 square meters. Its width is ten meters less than the length. Find the measures of the length and
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Step-by-step explanation:

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Let l is the length and b is the width of the rectangle

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b = l-10 ...(1)

Area of a rectangle is given by :

A=l\times b\\\\171=l(l-10)\\\\l^2-10l=171\\\\l^2-10l-171=0\\\\l^2-19l+9l-171=0\\\\\text{taking common together}\\\\l(l-19)+9(l-19)=0\\\\(l-9)(l-19)=0

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3 years ago
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vovangra [49]

Answer:

25

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6.7 -  {3}^{2} .9 +  {4}^{3}  \\  \\  = 42 - 9.9 + 64 \\  \\  = 42 - 81 + 64 \\  \\ =  106 - 81 \\  \\  = 25

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3 years ago
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