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alexgriva [62]
4 years ago
12

If BC = 4x – 5 and CD = 2x + 7, find x.

Mathematics
1 answer:
AleksAgata [21]4 years ago
5 0
X=6, just subtract the 2x from both sides and you would have 2x - 5 = 7

then add the 5 to both sides which equals 2x = 12

then finally divide by 2 and get x = 6
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Maddy has 2 times as many stickers as meg. They have a total of 15 combined. How many does maddy have ?
denis-greek [22]
This is the process I would use:

Maddy's = 2x           2x+x=15
Meg's = x                     3x=15
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Since Maddy's is 2x, multiply the 5 times 2 and you find that Maddy has 10 stickers. 
7 0
4 years ago
1960 $4,995
ruslelena [56]

Answer:

Average mean salary =$26327.83

Step-by-step explanation:

We have been given year and respective salaries in each year.

1960 $4,995

1970 $8,626

1980 $15,970

1990 $31,367

2000 $41,807

2010 $55,202

Now we nee do to determine the average mean salary for the six decades, 1960 – 2010.

So we just need to add all those six salaries and divide that sum by 6 to find the average mean salary.

Average mean salary =\frac{(4995+8626+15970+31367+41807+55202)}{6}

Average mean salary =\frac{(157967)}{6}

Average mean salary =26327.83333333

Hence final answer is approx:

Average mean salary =$26327.83

7 0
4 years ago
Read 2 more answers
plumber a charges an initial fee of $45 plus a rate of $60 per hour. Plumber B charges $225 flat. Explain how you would determin
Hunter-Best [27]

Answer:

3 Hours

Step-by-step explanation:

Plumber A.

Initial fee: $45

Per Hour: $60

Plumber B.

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To determine the number of hours it will take for both plumbers to charge the same amount you have to start with $45.

Then add 60$ every hour.

$45 + $60 = $105

$105 + $60 = $165

$165 + $60 = $225

Therefore, it takes 3 hours for them to charge the same rate.

4 0
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Answer:

3.143

Step-by-step explanation:

Since you're rounded it to the third decimal, you look at the fourth one. And since the fourth one is 8, ur going round 2, which is the third decimal to 3.

4 0
3 years ago
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Whats a shape with an area of 16
serious [3.7K]
Maybe a square that is 4 on every side
4 0
3 years ago
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