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Mazyrski [523]
2 years ago
7

2 (a - 5) - 5 = 3 Marking brainliest

Mathematics
2 answers:
mixer [17]2 years ago
6 0

Answer:

a = 9

Step-by-step explanation:

2(a-5)-5=3

2a-10-5=3

2a-15=3

2a=18

a=9

tekilochka [14]2 years ago
3 0

Answer:

9

Step-by-step explanation:

2a-10-15=3

2a=18

a=9

hope you get the explanation

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Solve the following:<br>a) 2(5x – 3) = 24<br>b) 5(2x + 1) = 50​
likoan [24]

Answer:

x = 3 and x = \frac{9}{2}

Step-by-step explanation:

(a)

2(5x - 3) = 24 ( divide both sides by 2 )

5x - 3 = 12 ( add 3 to both sides )

5x = 15 ( divide both sides by 5 )

x = 3

(b)

5(2x + 1) = 50 ( divide both sides by 5 )

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x = \frac{9}{2}

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Answer:

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2 years ago
rancho middle school has an average of 23/3/8 students per teacher. write this mixed number as a decimal​
Len [333]

Rancho middle school has an average of 23 3/8 students per teacher.write this mixed number as a decimal.

Answer:

23\frac{3}{8} = 23.375

Step-by-step explanation:

Given:

The given mixed number is 23\frac{3}{8}

We need to write the given mixed number as a decimal.

So, we find the decimal number by separating the parts.

=23+\frac{3}{8}

The value of \frac{3}{8}=0.375

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Otrada [13]

Step-by-step explanation:

x² + y² − 8x + 10y − 8 = 0

Rearrange:

x² − 8x + y² + 10y = 8

To complete the square, take half of the x and y coefficients, square it, then add the result to both sides.

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(10/2)² = 25

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x² − 8x + 16 + y² + 10y + 25 = 49

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