3 years ago

Expand and simplify (2x+3)(x-3)

Mathematics

2 answers:

8090 [49]3 years ago

6 0

2x^2-3x+3x-9
Answer: 2x^2-9

timofeeve [1]3 years ago

5 0

2x^2-6x+3x-9

FINAL ANSWER:
2x^2-3x-9

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A radio station broadcasts programs and commericals 20 hours everyday. The ratio of the time spent on commercials to the program

Vanyuwa [196]

The answer is 4 hours

p - the programming time
c - time spent on commercials

A radio station broadcasts programs and commercials 20 hours everyday:
p + c = 20

The ratio of the time spent on commercials to the programming time is 1:4.
c : p = 1 : 4
p = c * 4 : 1
p = 4c

p + c = 20
p = 4c
_____
4c + c = 20
5c = 20
c = 20 : 5
c = 4h

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3 years ago

A farmer has one square mile land . If he divides his land into square fields that are 1/4 mile long and 1/4 mile wide,how many

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A square field that is 1/4 mile long and 1/4 mile wide has area

$\dfrac{1}{4} \cdot \dfrac{1}{4} = \dfrac{1}{16}$