Solve for x and show all work thanks:)

Answer:

7)[tex]2^x=2^8x-15[/tex]

Apply exponents rules

[tex]x=8x-15[/tex]

Solve [tex]x=8x-15: x=\frac{15}{7} \\[/tex]

Answer: [tex]x=\frac{15}{7} \\[/tex]

8)[tex]4^x=2^x+1\\2x=x+1\\x=1[/tex]

Answer : [tex]x=1[/tex]

9)[tex]5^x+3=7^x\\(x+3) in (5)=xln(7)\\x=\frac{3ln(5)}{in(7)-in(5)}[/tex]

Answer: [tex]x=\frac{3ln(5)}{in(7) -in(5)}[/tex]

Step-by-step explanation:  

PLEASE MARK ME AS BRAINLIEST

Answer:

387 i think

i just divided 1162 by 3

Answer:

23

Step-by-step explanation:

41-18=23

Answer:

V = 2

x ≠ 3

Step-by-step explanation:

Simplifying

We are given the expression:

[tex]\displaystyle V=\frac{2x}{x-3}+\frac{6}{3-x}[/tex]

To simplify, we make both denominators equal by multiplying the second term by -1:

[tex]\displaystyle V=\frac{2x}{x-3}-\frac{6}{x-3}[/tex]

Now both denominators are equal, we simply add the numerators:

[tex]\displaystyle V=\frac{2x-6}{x-3}[/tex]

Factoring the numerator:

[tex]\displaystyle V=\frac{2(x-3)}{x-3}[/tex]

This expression can be simplified by x-3, but we must take into consideration the x-3 cannot be zero because it would cause an indetermination to appear.

The restriction is:

x - 3 ≠ 0

Or, equivalently:

x ≠ 3

Simplifying:

V = 2

Answer:

$3

Step-by-step explanation:

Given that:

Price of each comb = $[tex]x[/tex]

15 combs were purchased in = $[tex](15x-45)[/tex]

To find:

Amount of discount offered on each comb.

Solution:

First of all, let us calculate the price of 15 combs at the price of $[tex]x[/tex] each.

Original Price of 15 combs = Price of one comb [tex]\times[/tex] Number of combs = $15[tex]x[/tex]

Now, there is some discount provided on the purchase of 15 combs.

Discount offered on 15 combs = Original price of 15 combs - Discounted price of 15 combs = [tex]15x- (15x-45)[/tex] = $45

Discount offered on each comb = Discount on 15 combs divided by 15

Discount offered on each comb = [tex]\frac{45}{15}[/tex] = $3

Answer:

solving the equation [tex]5x^2 - 16 = 29[/tex] we get the solution: [tex]\mathbf{x=3,x=-3}[/tex]

Step-by-step explanation:

We need to solve the equation [tex]5x^2 - 16 = 29[/tex]

We need to solve the equation to find the value of x.

We can solve this equation using simple DMAS rule.

We are given:

[tex]5x^2 - 16 = 29[/tex]

Add 16 on both sides

[tex]5x^2 - 16+16 = 29+16\\5x^2=45[/tex]

Now, divide both sides by 5

[tex]\frac{5x^2}{5}=\frac{45}{5} \\x^2=9[/tex]

Now, we know that [tex]\sqrt{x^2}=\pm x[/tex]

Taking square root on both sides.

[tex]\sqrt{x^2}=\sqrt{9}\\x=\pm3[/tex]

So, we get values of x:

[tex]x=3, x=-3[/tex]

Therefore, solving the equation [tex]5x^2 - 16 = 29[/tex] we get the solution: [tex]\mathbf{x=3,x=-3}[/tex]

Answer: -7<3

Step-by-step explanation:

3 is more than negative 7

Answer:

HII

Step-by-step explanation:

X= 40

Answer:

1) line segment

2) square-root of 13.

3) plane F

4) Ray

5) I think the wrong image is attached, but a point would just be a dot, a line would have one dot then an arrow on the other end, an angle would be 2 lines connected with an emphasis on what's going on in between the 2 lines, a line segment is 2 dots on both ends of a line.

6)H N K I

7) (2,-8)

8) line p

9) (-2, 7)

Step-by-step explanation:

For the distance between 2 points, do (x2-x1)^2+(y2-y1)^2 then take the square root of that.

For naming a plane, as long as it is an uppercase cursive letter it is a plane.

Rays are lines without the dot on the end.

Collinear points are points that lie on the same line.

Midpoint method is finding the average between the x coordinates then the y coordinates, so think (x1+x2)/2, (y1+y2)/2, but this can be confusing with negative distances, so just think of it as on a number line, from -1 to -3 they are 4 apart, so the average between them is -2.

Answer:

x=50

Step-by-step explanation:

since its an isosceles triangle, both of the base angles are going to be the same. Since all of a triangle's angles combined equal 180, and you already have one angle, subtract the 80 from 180.

this leaves you with 100. since there are two angles left, divide 100 by two and thats the value of x

hope this helps!! :)

Answer:

50?

Step-by-step explanation:

I would say 50 because x and the blank angle looks the same and 80+x+?=180

80+x2=180

x*2=100

x=50

Answer:$76

Step-by-step explanation:

Answer: y = -x - 4

Step-by-step explanation:

Step-by-step explanation:

Answer:

3 (2x + 3) + 11 = –2 (2x - 6) - 18

Answer:

-15

Step-by-step explanation:

this is because when a negative multiplies with a positive ....it gives an answer of negative

Answer:

A

Step-by-step explanation:

Given

2k² - k - 3

Consider the factors of the product of the k² term and the constant term which sum to give the coefficient of the k- term.

product = 2 × - 3 = - 6 and sum = - 1

The factors are + 2 and - 3

Use these factors to split the k- term

2k² + 2k - 3k - 3 ( factor the first/second and third/fourth terms )

= 2k(k + 1) - 3(k + 1) ← factor out (k + 1) from each term

= (2k - 3)(k + 1) → A

Answer:

15     0

+3    +6

+3    +6

+3    +6

+3     +6

+3     +6

__________

30    30

Answer:

500$  she has 100$ and plans to save $25 each month

Step-by-step explanation:

she will have to save $25  for 16 months to pay the bank back there money

Answer:

x = 8

Step-by-step explanation:

do distribution: 4x - 28 + 12 = 16

simplify: 4x - 16 = 16

add 16 to both sides: 4x = 32

divide both sides by 4: x = 8

Let me know if you need me to explain it more, good luck!

Answer:

Step-by-step explanation:

circumference C=2*3.14*r

C=2*3.14*18m=113.04 m

Answer:

113.04 meters.

Step-by-step explanation:

Use the formula

2 times pi times r

r=radius of the circle

or Pi times D

d= diameter of the circle.

The radius is 18 meters.

So, do 2 times 18 times pi.

Answer:

6

Step-by-step explanation: You can set up the equation: [tex]\sqrt{\frac{n}{3} }[/tex] = [tex]\sqrt{n-4}[/tex] You square both sides to cancel out the squares which leaves you with [tex]\frac{n}{3}[/tex] = n - 4. Then you just solve as normal which ends you up with an answer of 6. You can check this by plugging 6 back into the equation and see that you end up with [tex]\sqrt{2}[/tex] on both sides.

Answer:

The answer is 4

Step-by-step explanation:

2y - 3 = x + 2

or, 2y - 3 = 3 + 2

or, 2y = 5 + 3

or, y = 8/2

= 4 Ans

Answer:

-21z+238

Step-by-step explanation:

Use distributive property

Answer: 15m + 5n

Step-by-step explanation:

so, first off, we take the number outside of the parentheses and multiply it by everything that's inside of the parentheses.

(5)3m + 5(n)

then, we just multiply all of those together.

15m + 5n

Answer:

b is the correct answer

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Answer:

C. 12-(y x 2) and 12-(2 x y)

Step-by-step explanation:

A. Simplifies to 3y+4 and 7y. Not equal

B. Simplifies to [tex]\frac{18}{y}[/tex] + 10 and [tex]\frac{y}{18}[/tex] +10. Not equal

C. Simplifies to 12 - 2y and 12 - 2y. Equal

D. Simplifies to [tex]\frac{4}{y}[/tex] and [tex]\frac{6}{y}[/tex] - 10. Not equal

Hope this helps!

Answer:

x=128

Step-by-step explanation:

step-by-step.

1

4

x−8=

1

8

x+8

Step 1: Subtract 1/8x from both sides.

1

4

x−8−

1

8

x=

1

8

x+8−

1

8

x

1

8

x−8=8

Step 2: Add 8 to both sides.

1

8

x−8+8=8+8

1

8

x=16

Step 3: Multiply both sides by 8.

8*(

1

8

x)=(8)*(16)

x=128