All categories

2 years ago

4x = 8x − 1 x = three fourths x = 1 x = 3 x = 6

2 answers:

5 0

Isolate the variable by subtracting 8x from both sides to get -4x = -1. multiply both sides by -1 to get 4x = 1. divide both sides by 4 to get x = 1/4.

Zielflug [23.3K]2 years ago

5 0

Answer:

x = 3

Step-by-step explanation:

Took the test

You might be interested in

69 points!!!

Amiraneli [1.4K]

Answer:

C) The solution for the given system of equations are A(0,-5) and B(-4,3)

Step-by-step explanation:

The given system of equation are : $x^{2} + y^{2} = 25\\2x + y = -5$

from equation 2, we get y = -5 - 2x .

Put the above value of y in the equation (1).

We get: $x^{2} + y^{2} = 25 \implies x^{2} + (-5-2x)^{2} = 25$

By ALGEBRAIC IDENTITY:

$(a+b)^{2} = a^{2} + b^{2} + 2ab\\ (-5-2x)^{2} = (-5)^{2} + (-2x)^{2} + 2(-5)(-2x)$

or, $x^{2} + (-5-2x)^{2} = 25 \implies x^{2} + (25 + 4x^{2} + 20x) = 25$

or, $5x^{2} + 20x = 0 \implies x(5x + 20) = 0$

⇒ x = 0 or, x = -20/5 = -4

So, the possible values for x are: x = 0 or x = -4

If x = 0, y = -5-2x = -5-2(0) = -5

and if x = -4, y = -5 -2(-4) = -5 + 8 = 3

Hence, the solution for the given system of equations are A(0,-5) and B(-4,3)

8 0

3 years ago

How may time can 14 go into 28?

Readme [11.4K]

14 goes into 28 2 times.

3 0

2 years ago

Consider the diagram to the right below and complete the proof below

kiruha [24]

I don’t know about this question

8 0

2 years ago

83. 6 in a complex number

grin007 [14]

Answer:

83.6 is a real number

Step-by-step explanation:

Since 83.6 83.6 is a real number, it is the real part (a) of the complex number a+bi a + b i . A real number does not contain any imaginary parts, so the value of b b is 0 0 . The answer is 83.6+0i 83.6 + 0 i

5 0

3 years ago

-4 - 3= Please help if you know the answer please explane??

Doss [256]

Answer:

-7

Step-by-step explanation:

there is nothing to explain but anyways

-4 - 3 = -7

8 0

3 years ago

Read 2 more answers