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2 years ago

Someone please help me answer this!!!

Mathematics

2 answers:

makkiz [27]2 years ago

8 0

Answer:

n = 9

Step-by-step explanation:

hey mate make my answer brainiest

(x*3)*3=x*n

3×3=n. (reason when bases are same powers are also same)

9=n

n=9

I hope this helps

Norma-Jean [14]2 years ago

4 0

Answer:

n = 9

Step-by-step explanation:

Using index laws, multiply 3 into 3 to get 9

(x3)^3 = x^n

x^9 = x^n

9 = n

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Solve for the equation, show all your work. This is an absolute value equation. You need to show both equations and the work for

VMariaS [17]

Answer:

$x=-1$ or $7$

Step-by-step explanation:

We use casework on when $3x-9=12$ and when $3x-9=-12$ .

For the first case, $3x-9=12$ , we add 9 to both sides to get

$3x=21$ .

Dividing both sides by 3 gives

$x=7.$

For the second case, $3x-9=-12$ , we add 9 to both sides to get

$3x=-3$ .

Dividing both sides by 3 gives

$x=-1$ .

Checking both cases, we plug in $x=7$ and $x=-1$ .

For the first case, we have $|3(7)-9|=|21-9|=|12|=12$ , which satisfies the equation.

For the second case, we have $|3(-1)-9|=|-3-9|=|-12|=12$ , which also satisfies the equation.

This gives us two solutions to the equation; $x=7$ and $x=-1$ .

4 0

1 year ago

Solve x for 3х – 1 = - 13

ddd [48]

Step-by-step explanation:

3x=-13+1

3x = - 12

x = -12/3

x= -4

7 0

2 years ago

Read 2 more answers

If x+y=z and z=x+4,then x+y=x+4

lidiya [134]

That is true because as you can see in the other 2 equations, they both have z on one of the sides meaning that the sides that don't have z are equal to each other

Hope this helps :)

3 0

3 years ago

As an estimation we are told 5 miles is 8 km. <br> Convert 68 km to miles.

ArbitrLikvidat [17]

Answer:

42 miles

Step-by-step explanation:

8 0

2 years ago

Brainliest to most helpful! Answer asap!

kap26 [50]

ΔAOB is a right angled triangle. Therefore the Pythagorean Theorem applies in this situation.
θ is the angle from a standard position of the line OA

The length of the y component is √(1-0)2 +(-3-(-3))2] =√(12+ 02) = 1 A(-3,1) to B(-3,0) which is opposite

Then the length of the x-component is √[(-3-0)2 +(0-0)2] = √(9+0)= 3 B(-3,0) to O(0,0) which is adjacent

The length of vector OA is √[(-3-0)2 + (1-0)2] = √(9+1) = √(10) A(-3,1) to O(0,0) which is the hypotenuse of the triangle

θ = 180 - α
sinθ = sin(180-α) = opposite/hypotenuse = 1/√10
cosθ = adjacent/hypotenuse = -3/√10
tanθ = opposite/adjacent = 1/-3 = -1/3

α= arcsin(1/√10) ≈ 18
θ =180 -18 ≈162

8 0

2 years ago