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3 years ago

Help i forgot how to do this

Mathematics

1 answer:

Romashka [77]3 years ago

5 0

Answer:

a=3/5 or 0.6

Step-by-step explanation:

a-8/5-2/3a=-7/5

Step 1: Multiply both sides

15a-24-10a=-21

Step 2: Combine like terms

5a-24=-21

Step 3: Calculate and divide both sides by 5

5a=3

Solution:

a=3/5 or 0.6

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3 years ago

The following table shows the salary of 7 people in an office last year.

Andreas93 [3]

Answer:

a. Mean = £27928.57

b. Mean without Deva's income = £19416.67

Step-by-step explanation:

The mean is calculated by dividing the sum of values by number of values. Given 7 values will be used to calculate mean.

So,

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$Mean = \frac{Sum}{No.\ of\ values}\\=\frac{13500+27500+13750+79000+19250+27500+15000}{7}\\=\frac{195500}{7}\\=27928.5714..$

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3 years ago

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4 years ago

The perimeter of a rectangle is less than 10 inches. The length is x and the width is x - 5. If the solution is x<5, ThEn the

Aneli [31]

Problem

The perimeter of a rectangle is less than 10 inches. The length is x and the width is x - 5. If the solution is x<5, ThEn the length is less than 5. Is this viable solution.

Solution

For this case the perimete rof a rectangle is given by:

P= 2x+2y

x= lenght y = width

And we also know that y= x-5

And replacing the condition given: P<10 we got:

2x +2y <10

2x +2(x-5)<10

4x -10 >10

And we can rewrite as:

4x >20

x>5

So then the best answer would be:

B. non viable

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