How is 8a - (8a - 8) equivalent to 8

Answer:

a = 6

Step-by-step explanation:

120 = 3 + 3(7a - 3)   (by PEDMAS, expand parentheses first by distributive property)

120 = 3 + 7a(3) - 3(3)

120 = 3 + 21a - 9

120 = 21a - 6    (add 6 to both sides and rearrange)

21a = 120 + 6

21a = 126   (divide both sides by 21)

a = 126/21

a = 6

Step-by-step explanation:

120-(3+3*(7*a-3))=0

Step by step solution :

STEP

1

:

Equation at the end of step 1

120 - (3 + 3 • (7a - 3)) = 0

STEP

2

:

STEP

3

:

Pulling out like terms :

3.1 Pull out like factors :

126 - 21a = -21 • (a - 6)

Equation at the end of step

3

:

-21 • (a - 6) = 0

STEP

4

:

Equations which are never true:

4.1 Solve : -21 = 0

This equation has no solution.

A a non-zero constant never equals zero.

Solving a Single Variable Equation:

4.2 Solve : a-6 = 0

Add 6 to both sides of the equation :

a = 6

One solution was found :

a = 6

Answer:

What you want to do is solve for m in whichever equation it's easier to so in, then substitute that in to the other equation. For instance:

X=3m-4

Y=6-m

Solve the 2nd equation to get m=6-y

Plug that into the first equation to get x=3(6-y)-4

X=18-3y-4

X-14=-3y

14-x=3y

Y=(14-x)/3

Answer:

x11

Step-by-step explanation:

All I did was add the like terms.

Answer:

[tex]x^{8}[/tex] is the correct answer

Step-by-step explanation:

[tex]x^{2} *x*x^{5}[/tex]

[tex]x^{2} xx^{5\\[/tex]

[tex]x^{2+1+5}[/tex]

[tex]=x^{8}[/tex]

I hope this helps

:)

Answer:

100% for 100 dollars

Step-by-step explanation:

i think so im not sure

Answer:The value of x must be 7 units.

Step-by-step explanation:

hope this helps

Answer:

takes 16 what??

if u tell me i can help u x

Step-by-step explanation:

Answer:

24

Step-by-step explanation:

If there are 4 floors and each classroom takes 1/6 of a floor, there are 6 classrooms per floor. Then, since there are 4 floors, you do 6 classrooms X 4 floors, which equals 24 classrooms.

Answer:

A, E

Step-by-step explanation:

Answer:

x^6*y^24

Step-by-step explanation:

This will become:

[tex]x^6*(y^4)^6[/tex]

Next, multiply the exponents for y:

x^6 * y^24

So the answer is x^6*y^24

Answer:

1450

Step-by-step explanation:

23*63= 1449

1449 yo the nearest 10 = 1350

Answer:

Step-by-step explanation:

6-9(-5s-9)=10s-9+3s

6+45s+81=13s-9

32s=-96

s=-3

Answer:

1+1=11

Step-by-step explanation:

that the answer hahahahhaha

Answer:

q = [tex]\frac{8}{3}[/tex]

Step-by-step explanation:

The point of intersection (3, 1 ) is the solution to both equations

Using

y = qx - 7 and substituting x = 3, y = 1

1 = 3q - 7 ( add 7 to both sides )

8 = 3q ( divide both sides by 3 )

[tex]\frac{8}{3}[/tex] = q

Answer:

C

Step-by-step explanation:

The equation is (x-a)^2 + (y-b)^2 = r^2

(x+3)^2+(y-2)^2 = 9

Answer:

137 degrees

Step-by-step explanation:

By using the fact that a triangle contains 180 degrees and angles made by the same lines are congruent we can find out that the top angle in the first triangle is 45 degrees. We can then figure out that the missing angle in that same triangle is 75 degrees by adding 45 and 60 and subtracting that from 180. Then we add that 75 degrees to 68 degrees to get 143 degrees which we can use to discover that the corner of the triangle that connects to the other triangle is 37 degrees. From there we know that triangles contain 180 degrees, so the remaining value is 43 and with this we can discover that the value of the asked for angle is 137 degrees.

Answer: X equals 7

Step-by-step explanation:

Answer:

7

Step-by-step explanation:

First you want to simplify the equation

8x + (-5) = 23 + 4x

-5 + 8x = 23 + 4x

Then solve for x, but before we do that we !!!must!!! move all terms that have x  to the left. Everything else would go to the right.

So we add -4x to both sides ..

-5+ 8x + (-4x) = 23 + 4x + (-4x)

-5 + 4x = 23 + 4x + (-4x)

-5 + 4x = 23 +0

-5 + 4x  = 23

Then add 5 to both sides of the equation:

-5 + 5 + 4x = 23 + 5

0 + 4x = 23 + 5

4x = 23 + 5

4x = 28

Then divide each side by 4:

x = 7

And there you have it. The answer is 7. Hope this helps! :)

Answer:

Tn=T1+(n-1)*d

Step-by-step explanation:

Tn is the nth term

T1 is the first term of the sequence

n is the nth term as well

d is the common difference

Answer: A

Step-by-step explanation: since X>y and y>z

Answer: x = 3

because ΔABC has BD is the bisector of ∠ABC

=> AD/AB = DC/BC

⇔ x/6 = 4/8

⇔ x/6 = 1/2

⇔ x = 6.1/2

⇔ x = 3

Step-by-step explanation:

Answer: x=3

Step-by-step explanation:

Answer:

mIHE should be 133°

Step-by-step explanation:

A line is 180°, so, if you take 47° off you're left with 133.

Giving you an answer of 133°.

Answer:

a) -27 a³ b⁶

Step-by-step explanation:

Explanation:-

Given ( -3 ab² )³

By using  (ab )ⁿ = aⁿ bⁿ      

   ( -3 ab² )³ = (-3)³ a³ (b²)³

Again , using formula   [tex](a^{m} )^{n} = a^{mn}[/tex]

                    =   -27 a³ b⁶

Answer:

(1,-4) and (3,-5)

-4+5/1-3

1/-2 , so the slope is -1/2

Y intercept is -3.5

ANSWER IS y=-1/2x-3.5

THANKSS :)

Answer:

5

Step-by-step explanation:

You multiply/divide all the fractions with each other.

Step-by-step explanation:

13.56 is the square root of 184

Answer:

x=-2

Step-by-step explanation

1) Remove () and Rewrite

2) Collect Like Terms

3) Move Terms

4) Divide Both Sides

ANSWER IS x=-2

Answer:

0=−20

Step-by-step explanation:

Distribute

Combine like terms

Combine multiplied terms into a single fraction

Multiply by 1

Subtract from both sides of the equation

Answer:

[tex]x > \frac{1}{2}[/tex]

Step-by-step explanation:

For the first one, in any triangle, we have the sum of two sides is greater than the third side. Hence, we have 3 inequalities: [tex]4x+3>2x+1, 5x+1>x+3, 3x+4>3x[/tex], which give us [tex]x>-1, x>\frac{1}{2},4>0[/tex]. We conclude that [tex]x>\frac{1}{2}[/tex].

For the second question, we have [tex]AB<BP+AP=2x[/tex], and similarly we can show that [tex]AC, BC<2x[/tex]. Hence, [tex]AB+BC+AC<6x[/tex].

The third question is not very clear.

Answer:

H ( -4, -3 )

Step-by-step explanation:

i dont know just big brain

no need to thank me.

Answer:

H ( -4, -3 )

Step-by-step explanation:

Answer:

Yes, it is

Step-by-step explanation:

Ok sorry wish I can help promise