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Mademuasel [1]
3 years ago
10

Alanna can detail a car in 45 minutes. Robbie can detail a car in 30 minutes. If they work together, how many minutes does it ta

ke them to detail a car? (2 points)
Mathematics
1 answer:
valina [46]3 years ago
6 0
The answer is 18 minutes
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Which situation is best represented by the inequality below? 30x + 100 > 25x + 150
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Lionel plays trumpet for a minimum of 45 minutes on the days that he practices. If x is the number of days that Lionel practices
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I have two bags of counters.
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a. 4/21

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Please help.................................................................................................
Sunny_sXe [5.5K]

Answer:

Step-by-step explanation:

L = 3*w + 1                      Given

P = 2*(L + w)                   Formula for Perimeter. Substitute for L    

P = 2*(3w + 1 + w)           Combine

P = 2*(4w + 1)                  

P = 58                             Given

58 = 8w + 2                    Remove the brackets

58 - 2 = 8w                     Subtract 2

56 = 8*w                         Divide by 8

56/8 = w

7 = w

================

Find L

L = 3*w + 1

L = 3*7 + 1

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================

Check

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5 0
3 years ago
Taylor has saved $99 for a tablet. That is 45% of the cost of the tablet. How much does the tablet cost?
gayaneshka [121]

Answer:

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Step-by-step explanation:

Make a proportion

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99/x=45/100

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45x=9,900

Divide by 45 on both sides

x=220

So, the tablet costs $220

Hope this helps! :)

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3 years ago
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