All categories

3 years ago

8-(4x+7)=5(x+6) ( I think the 7 might be m idk)

Mathematics

2 answers:

Bezzdna [24]3 years ago

8 0

Answer:

its 3 :)

Step-by-step explanation:

Simplifying

8 + -1(4x + 7) = 5(x + 6) + -2

Reorder the terms:

8 + -1(7 + 4x) = 5(x + 6) + -2

8 + (7 * -1 + 4x * -1) = 5(x + 6) + -2

8 + (-7 + -4x) = 5(x + 6) + -2

Combine like terms: 8 + -7 = 1

1 + -4x = 5(x + 6) + -2

Reorder the terms:

1 + -4x = 5(6 + x) + -2

1 + -4x = (6 * 5 + x * 5) + -2

1 + -4x = (30 + 5x) + -2

Reorder the terms:

1 + -4x = 30 + -2 + 5x

Combine like terms: 30 + -2 = 28

1 + -4x = 28 + 5x

Solving

1 + -4x = 28 + 5x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-5x' to each side of the equation.

1 + -4x + -5x = 28 + 5x + -5x

Combine like terms: -4x + -5x = -9x

1 + -9x = 28 + 5x + -5x

Combine like terms: 5x + -5x = 0

1 + -9x = 28 + 0

1 + -9x = 28

Add '-1' to each side of the equation.

1 + -1 + -9x = 28 + -1

Combine like terms: 1 + -1 = 0

0 + -9x = 28 + -1

-9x = 28 + -1

Combine like terms: 28 + -1 = 27

-9x = 27

Divide each side by '-9'.

x = -3

Simplifying

x = -3

quester [9]3 years ago

6 0

Answer:

$x=\frac{-29}{9} \\x=-3.2\\x=-3\frac{2}{9}$

1st answer: Exact Form

2nd answer: Decimal Form

3rd answer: Mixed Number Form

You might be interested in

Account A: $300 monthly deposits, interest rate is 4.2%. Account B: $250 monthly deposits, interest rate is 5.1%. Which account

Elan Coil [88]

Answer:

Step-by-step explanation:

We have to determine the future value of the annuity to determine which account has a greater value

Future value = Amount x annuity factor

annuity factor = Annuity factor = {[(1+r)^n] - 1} / r

Account A = 300 x[ (1.042)^15 - 1 ] / 0.042 = $6097.14

Account B = 250 x[ (1.051)^15 - 1 ] / 0.051 = $5435,42

Account A will be greater

4 0

2 years ago

Graph 2x-5=2x+8 please

lapo4ka [179]

2x-5=2x+8
-5=8

y=2x-5
y=2x+8

4 0

3 years ago

What is another way to represent 3%?<br> A) 0.3<br> B) 3<br> C) 0.03<br> D) 3/10

Ber [7]

it's C 0.03

0.03= 3%

0.30= 30%

3.00= 300%

3 0

2 years ago

Read 2 more answers

What is the simplified form of the following expression?

USPshnik [31]

Option C:

$$\frac{\sqrt[3]{100 x}}{5}=\sqrt[3]{\frac{4 x}{5}}$

Solution:

Given expression is

$$\sqrt[3]{\frac{4 x}{5}}$

Note: $\sqrt[3]{125}=\sqrt[3]{{5^3}} = 5$

To find the correct expression for the above simplified expression.

Option A: $\frac{\sqrt[3]{4 x}}{5}$

5 can be written as $\sqrt[3]{125}$ .

$$\frac{\sqrt[3]{4 x}}{5}=\frac{\sqrt[3]{4 x}}{\sqrt[3]{125} }$

$$=\sqrt[3]{\frac{4x}{125} }$

It is not the given simplified expression.

Option B: $\frac{\sqrt[3]{20 x}}{5}$

$$\frac{\sqrt[3]{20 x}}{5}=\frac{\sqrt[3]{20 x}}{\sqrt[3]{125} }$

$$=\sqrt[3]{\frac{20x}{125} }$

Cancel the common factor in both numerator and denominator.

$$=\sqrt[3]{\frac{4x}{25} }$

It is not the given simplified expression.

Option C: $\frac{\sqrt[3]{100 x}}{5}$

$$\frac{\sqrt[3]{100 x}}{5}=\frac{\sqrt[3]{100 x}}{\sqrt[3]{125} }$

$$=\sqrt[3]{\frac{100x}{125} }$

Cancel the common factor in both numerator and denominator.

$$=\sqrt[3]{\frac{4 x}{5}}$

It is the given simplified expression.

Option D: $\frac{\sqrt[3]{100 x}}{125}$

$$\frac{\sqrt[3]{100 x}}{125}=\frac{\sqrt[3]{100 x}}{5^3}$

It is not the given simplified expression.

Hence Option C is the correct answer.

$$\frac{\sqrt[3]{100 x}}{5}=\sqrt[3]{\frac{4 x}{5}}$

3 0

2 years ago

Where do parentheses go on 7+9x3-1=25

Anna35 [415]

They would go around the multiplication so it should look like 7+(9 x 3) -1=25

7 0

3 years ago