3 years ago

2(5n - 2 ) = 4 ( n + 2 )

Mathematics

2 answers:

alukav5142 [94]3 years ago

7 0

15n-2=4n+8
15n+2=4n+10
19n=10

divide 19 by 10

n=1.9

Marianna [84]3 years ago

3 0

2(5n-2)=4(n+2)
10n-4=4n+8
6n-4=8
6n=12
n=2

You might be interested in

You put the names of all the students in your class in a paper bag. There are 16 boys and 18 girls. If you draw a name at random

yaroslaw [1]

It would be a. 8/9 because for every 8/9 boy, there is 1 girl. To check this work, you can do 8/9 x 18 which equals 16.

5 0

2 years ago

Read 2 more answers

How do you solve 5-4x<95

mario62 [17]

$5 - 4x < 95 \\ - 4x < 95 - 5 \\ - 4x = 90 \\ x = - \frac{90}{4} \\ \boxed{ x = - \frac{45}{2} }$

8 0

2 years ago

What is the value of f(x) = 2 • 2^x for f(–2)? Will Give brainliest answer!!!

Sedbober [7]

For f(-2), x will equal -2.

Plug the x-value into the equation:

$2 \times 2^{-2}$

A negative exponent means that the term turns into a fraction, with 1 as the numerator and the positive exponent as the denominator.
Solve 2^(-2):

$2^{-2} = \frac{1}{2^{2}} = \frac{1}{4}$

Solve the problem:

$2 \times \frac{1}{4} = \frac{1}{2}$

f(-2) will equal 1/2.

5 0

2 years ago

How do we calculate 25% of 300

Natali5045456 [20]

25% is equal to $\frac{1}{4}$ . To get 25% of 300, we multiply 300 by either 0.25 or $\frac{1}{4}$ . This gives us $(300)( \frac{1}{4}) = \frac{300}{4} = \frac{150}{2} = 75$

4 0

2 years ago

Read 2 more answers

Tanya polled boys and girls in her grade to determine how many prefer math to other subjects. Her results are shown in the table

worty [1.4K]

Answer:The answer is

D, the relationship is not proportional because 14/30 = 7/15 and 16/32 = 1/2

Step-by-step explanation:

8 0

2 years ago