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Oksana_A [137]
3 years ago
12

. (4 + 5) +2 =4+(5+4) true or false

Mathematics
1 answer:
Travka [436]3 years ago
4 0

Answer:

False

Step-by-step explanation:

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a moving sidewalk at an airport moves at a rate of 1.2 ft / SEC. Walking on the moving sidewalk, a person travels 106 ft Ford an
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A moving sidewalk at an airport moves at a rate of 1.7 ft/sec. Walking on the moving sidewalk, a person travels 104 ft forward in the time it takes to travel 52 ft in the opposite direction.

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Cost of an oil change: $18.00; Markup: 3/4 answers
hjlf
I am assuming that the cost of an oil change already includes the mark-up.

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Or if 18 is the basis of the mark-up, then,

18 * 3/4 = 54/4 = 13.50 mark-up
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8 0
4 years ago
1/a+1/b=c solve for b how would i do this
olganol [36]

a cheap way to go about it is, let's do away with the denominators, and we'll do so by simply multiplying both sides by the the LCD of all fractions, in this case, that'd be "ab", so we multiply both sides by "ab".


\bf \cfrac{1}{a}+\cfrac{1}{b}=c\implies\stackrel{\textit{multiplying both sides by }\stackrel{LCD}{ab}}{ab\left( \cfrac{1}{a}+\cfrac{1}{b} \right)=ab(c)}\implies b+a=abc \\\\\\ a=abc-b\implies a=\stackrel{\textit{common factor}}{b(ac-1)}\implies \cfrac{a}{ac-1}=b

8 0
3 years ago
Giving brainlyist to the first to answer with a correct and complete answer.
Naya [18.7K]

Answer:

carrect answer is : multiply 40x20

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2 years ago
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The product of 14560 and 10 is 145600
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