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laila [671]
3 years ago
7

2x - 9 =-11 Plzzz solve

Mathematics
2 answers:
Doss [256]3 years ago
3 0
2x = -11 + 9
2x = -2
x= 2/2
x= 1
Vika [28.1K]3 years ago
3 0

2x-9= -11

Move -9 to the other side

Sign changes from -9 to +9

2x-9+9= -11+9

2x= -11+9

2x=-2

Divide both sides by 2

2x/2= -2/2

Answer: x= -1

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A local gym had 490 members last quarter. This quarter, with a change in its rates, it has 686 members. What is the percent of i
sergij07 [2.7K]

Given:

Number of gym members in last quarter = 490

Number of gym members in this quarter = 686

To find:

The percent of increase in the number of members.

Solution:

We have,

Number of gym members in last quarter = 490

Number of gym members in this quarter = 686

Now, the percent of increase in the number of members.

\%\text{ of increase}=\dfrac{{Members in this month - Members in last month}}{\text{Members in last month}}\times 100

\%\text{ of increase}=\dfrac{686-490}{490}\times 100

\%\text{ of increase}=\dfrac{196}{490}\times 100

\%\text{ of increase}=\dfrac{2}{5}\times 100

\%\text{ of increase}=2\times 20

\%\text{ of increase}=40

Therefore, the gym members increased by 40%.

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djverab [1.8K]

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2 years ago
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