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laila [671]
3 years ago
15

Solve for a. 7a + 18 = 102

Mathematics
2 answers:
Oliga [24]3 years ago
6 0

Answer:

a=12

Step-by-step explanation:

7a+18=102

7a=102-18

7a=84

a=84/7

a=12 <----- answer

timurjin [86]3 years ago
4 0

Answer:

7a + 18 = 102

     - 18  - 18

7a = 84

<em>a = 12</em>

<em></em>

a = 12 is the answer.

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12/16 - 7/18 in simplest form​
Ivan

Answer:

The answer is \frac{13}{36}

Step-by-step explanation:

The formula is:

\frac{a}{b} -  \frac{c}{d}  =  \frac{ad - bc}{bd}

In this case :

\frac{12}{16}  - \frac{7}{18} =  \frac{12 x 18 - 16x17}{16x18} = \frac{216 -112 }{288} = \frac{104}{288}

To get the simples form notice both 104 and 288 are divisible by 8 and 104/8 = 13 and 288/8 = 36.

Thus \frac{104}{288} = \frac{13}{36}

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2 years ago
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For the first answer, refer to the attached solution. Add the data each week, then multiply the sum by 20% to find out which has the maximum expected number of subscriptions.

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2 years ago
R t2. Simplify the expressionr stO D. r 15
leonid [27]
\frac{ r^{-3} s^{5} t^{2} }{ r^{2}s t^{-2} }= r^{-3-2} s^{5-1} t^{2-(-2)}= r^{-5} s^{4} t^{4}= \frac{s^{4} t^{4}}{ r^{5} }
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2 years ago
Food cost for the last 5 months has been 600. What is the average amount spend?
Tresset [83]

Answer:

Step-by-step explanation:

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2 years ago
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Yakvenalex [24]

Answer:

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Step-by-step explanation:

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