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3 years ago

If f(x)=5x-3 and f(x)=7, what is the value of x?

Mathematics

1 answer:

Rama09 [41]3 years ago

3 0

5x - 3 = 7

Add 3 to both sides.

5x = 10

Divide both sides by 5.

x = 2

The value of x is 2.

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Solve for n 2/5n+3-7/10n=3/5-3n

LuckyWell [14K]

<h2>The answer is " $-\frac{8}{9} \\\\$ ".</h2>

Given:

$\to \frac{2}{5}n+3-\frac{7}{10}n=\frac{3}{5}-3n$

To find:

n=?

Solution:

$\to \frac{2}{5}n+3-\frac{7}{10}n=\frac{3}{5}-3n\\\\\to \frac{2}{5}n-\frac{7}{10}n+3n=\frac{3}{5} -3\\\\\to n(\frac{4-7+30}{10})=\frac{3-15}{5} \\\\\to n(\frac{-3+30}{10})=\frac{3-15}{5} \\\\\to n(\frac{27}{10})=\frac{-12}{5} \\\\\to n=\frac{-12}{5} \times \frac{10}{27} \\\\\to n=-4 \times \frac{2}{9} \\\\\to n=-\frac{8}{9} \\\\$

Therefore, the final answer of n is " $-\frac{8}{9} \\\\$ ".

Find out more information about solving here:

brainly.com/question/322601

7 0

2 years ago

There is a bag filled with 4 blue, 3 red and 5 green marbles.

amid [387]

Answer:

1/3 x 3/11 = 3/33 or 0.09, or 9 percent

Step-by-step explanation:

7 0

2 years ago

3 log 2x=4 Please solve

Leno4ka [110]

$3 log 2x=4\ /:3\\log2x=\frac{4}{3}\\10^{\frac{4}{3}}=2x\ /:2\\x=\frac{10\sqrt[3]{10} }{2}\\x=5\sqrt[3]{10}$

6 0

3 years ago

Substitution Method y=x-4 y=4x-10

ira [324]

Answer:

x=2 and y= -2

Step-by-step explanation:

Substitute y=x-4 in second equation

x-4=4x-10

get x terms on one side and numbers on other sides

4x-x=10-4

3x=6

divide 3 on both sides

x=2

substitute x=2 in y=x-4

y=2-4

y= -2

4 0

3 years ago

A waiter earns $11.00 an hour and approximately 10% of what he serves in a shift. If he works a 6 hour shift and takes $425 in o

Kazeer [188]

Answer:

108.50

Step-by-step explanation:

First find the wages

11* 6 = 66 dollars

Then figure the commission

10% of 425

.10 * 425

42.5

Add the two amounts together

42.5+66

108.50

8 0

3 years ago