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3 years ago

Solve logarithmic equation

Mathematics

2 answers:

Maksim231197 [3]3 years ago

4 0

Answer:

x=6

Step-by-step explanation:

ln 1=0

x-5=1

x=6

sergiy2304 [10]3 years ago

3 0

Answer:

x=6

Step-by-step explanation:

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6x+3y=24 y=-2x+8 plz help

Whitepunk [10]

Solve for the first variable in one of the equations, then substitute the result into the other equation.

Point Form:

(x,−2x+8)(x,-2x+8)

Equation Form:x=xy=−2x+8

8 0

3 years ago

Read 2 more answers

Cos 600 degrees solved by double angle formula (20 points) show work please :)))

Lady_Fox [76]

Answer:

$\rm\cos({600}^{ \circ} ) =-1/2$

Step-by-step explanation:

we would like to solve the following using double-angle formula:

$\displaystyle \cos( {600}^{ \circ} )$

there're 4 double Angle formulas of cos function which are given by:

$\displaystyle \cos(2 \theta) = \begin{cases} i)\cos^{2} ( \theta) - { \sin}^{2}( \theta) \\ii) 2 { \cos}^{2}( \theta) - 1 \\iii) 1 - { \sin}^{2} \theta \\ iv)\dfrac{1 - { \tan}^{2} \theta}{1 + { \tan}^{2} \theta } \end{cases}$

since the question doesn't allude which one we need to utilize utilize so I would like to apply the second one, therefore

step-1: assign variables

to do so rewrite the given function:

$\displaystyle \cos( {2(300)}^{ \circ} )$

so,

$\theta = {300}^{ \circ}$

Step-2: substitute:

$\rm\cos(2 \cdot {300}^{ \circ} ) = 2 \cos ^{2} {300}^{ \circ} - 1$

recall unit circle thus cos300 is ½:

$\rm\cos(2 \cdot {300}^{ \circ} ) = 2 \left( \dfrac{1}{2} \right)^2 - 1$

simplify square:

$\rm\cos(2 \cdot {300}^{ \circ} ) = 2\cdot \dfrac{1}{4} - 1$

reduce fraction:

$\rm\cos(2 \cdot {300}^{ \circ} ) = \dfrac{1}{2} - 1$

simplify substraction and hence,

$\rm\cos({600}^{ \circ} ) = \boxed{-\frac{1}{2}}$

7 0

3 years ago

Find the value of x, y, and z

sladkih [1.3K]

Answer:

(x, y, z) = (7, 9, 90)

Step-by-step explanation:

The two acute angles between l1 and l2 are vertical, so congruent.

(9x -7) = 8x

x = 7 . . . . . . . . . add 7-8x

These are supplementary to the obtuse angle between those lines:

8(7) + (13y +7) = 180

13y = 117 . . . . subtract 63

y = 9 . . . . . . . divide by 13

The angle marked z is supplementary to the angle marked as a right angle.

z + 90 = 180

z = 90

5 0

3 years ago

Which one is it giving brainliest to best answer

rodikova [14]

Answer:

it's the second one

Step-by-step explanation:

|x|x|x|x|7|=19

8 0

3 years ago

The number of African American federal and state legislators has increased approximately linearly from 1136 positions in 2001 to

topjm [15]

Answer:

wdy mean by find an equation

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3 years ago

Solve logarithmic equation￼

Solve logarithmic equation