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3 years ago

If –3x+12 = 9x, then 5x=____

Mathematics

1 answer:

Viktor [21]3 years ago

6 0

Answer:

5x=5

Step-by-step explanation:

You add the -3x to the side with 9x

Then you get 12= 12x

Then simplify 1x=1 which means 5x=5

You might be interested in

Which value is a solution for the equation tan/2=-1

erma4kov [3.2K]

The value of the solution is 3π/2.

What is a trigonometric equation?

An equation involving one or more trigonometric ratios of unknown angles is called a trigonometric equation.

tan x/2 = -1

tanx/2 = tan(-π/4)

tanx=tanФ

⇒ The general equation of tanx=tanФ is

⇒ x=nπ+Ф

x/2=nπ+(-π/4)

at n=0

x/2=-π/4

x=-π/2

at n=1

x/2=π-π/4

x/2=3π/4

x=3π/2

learn more about trigonometric equations here :

brainly.com/question/2088730

#SPJ1

Disclaimer: The question was given incomplete on the portal. Here is the complete question.

Questions: Which value is a solution for the equation tan x/2 = -1?

A. 5pi/4

B. 7pi/4

C. 3pi/4

D. 3pi/2

6 0

2 years ago

Solve for x 9^(x+2)=1/27^(x+12)

elena-14-01-66 [18.8K]

$9^{(x+2)}= (1/27)^{(x+12)}\1/27 = 9^{-3/2}\9^{(x+2)}=9^{(-3/2)(x+12)}\x+2=(-3/2)(x+12)\x+2=(-3/2)x-18\(5/2)x=-20\x=-8$

8 0

3 years ago

-x/14+2>4?? I’m confused

Lelechka [254]

Answer: x<−28

Step-by-step explanation:

5 0

3 years ago

Anyone help me. ....

weeeeeb [17]

Answer:

see explanation

Step-by-step explanation:

Using the rules of exponents

All the exponents inside the parenthesis are multiplied by the exponent outside the parenthesis.

Then

$\frac{m^{-7}n^{14} }{m^{-25}n^{40} }$ ÷ $\frac{m^{-21}n^{42} }{m^{-25}n^{40} }$

[ Using the rule $\frac{a^{m} }{a^{n} }$ = $a^{(m-n)}$ ]

= $m^{(-7-14)}$ $n^{(14-(-28)}$ ÷ $m^{(-15-10)}$ $n^{(25-(-15)}$

= $m^{-21}$ $n^{14+28}$ ÷ $m^{-25}$ $n^{25+15}$

= $\frac{m^{-21}n^{42} }{m^{-25}n^{40} }$

= $m^{(-21-(-25))}$ $n^{(42-40)}$

= $m^{(-21+25)}$ n²

= $m^{4}$ n² = $m^{x}$ $n^{y}$ , so x = 4 and y = 2

Then

$m^{x-2y}$ = $m^{4-2(2)}$ = $m^{4-4}$ = $m^{0}$ = 1 ← as required

6 0

3 years ago

The length of the base of an isosceles triangle is x. The length of a leg is 4x-6. The perimeter of the triangle is 96. Find x.

slava [35]

Answer:

12 units

Step-by-step explanation:

base is x

one of the legs measure 4x-6

therefore, perimeter is equal to

2 (4x - 6) + x = 96

8x - 12 + x = 96

9x = 96 + 12

9x = 108

x = 108/9 = 12 units

5 0

3 years ago