1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
snow_tiger [21]
3 years ago
11

Please help with this question

Mathematics
1 answer:
astraxan [27]3 years ago
7 0

Answer:

x = -8/2

Step-by-step explanation:

To make the equation easier to work with, our first step will be to make all of our fractions have a common denominator. Both 2 and 4 are factors of 8, so that will be our common denominator.

Old Equation: 1/4x - 1/8 = 7/8 + 1/2x

New Equation (with common denominators): 2/8x - 1/8 = 7/8 + 4/8x

Now, we're going to begin to isolate the x variable. First, we're going to subtract 2/8x from both sides, eliminating the first variable term on one side completely.

2/8x - 1/8 = 7/8 + 4/8x

-2/8x                    -2/8x

__________________

-1/8 = 7/8 + 2/8x

We're one step closer to our x variable being isolated. Next, we're going to move the constants to the left side of the equation. To do this, we must subtract by 7/8 on both sides.

-1/8 = 7/8 + 2/8x

- 7/8  -7/8

______________

-1 = 2/8x

Our last step is to multiply 2/8x by its reciprocal in order to get the x coefficient to be 1. This means multiply both sides by 8/2.

(8/2)  -1 = 2/8x (8/2)

The 2/8 and 8/2 cancel out, and you're left with:

-8/2 = x

I hope this helps!

You might be interested in
What is y=x^2+74, translated 2 units up and 5 units left
Sonja [21]
There’s an answer
y=(x+5)^2+76
5 0
3 years ago
Read 2 more answers
Write 194.218 in expanded form
Delvig [45]
One hundred ninety four and two hundredth eighteenths
5 0
2 years ago
What is the area of the following circle? D = 2
Vladimir79 [104]

Answer:

\pi \: {r}^{2}  = \pi \:  { \frac{d}{4} }^{2}

Plug the formula in to your calculator

8 0
3 years ago
Read 2 more answers
Find the discriminant, and determine the number of real solutions. then solve x^2 +8x+20=0
vodomira [7]

Answer:

Part 1) The quadratic equation has zero real solutions

Part 2) The solutions are

x_1=-4+2i   and x_2=-4-2i

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form ax^{2} +bx+c=0 is equal to

x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}

in this problem we have

x^{2}+8x+20=0  

so

a=1\\b=8\\c=20

The discriminant is equal to

D=(b^{2}-4ac)

If D=0 -----> the quadratic equation has only one real solution

If D>0 -----> the quadratic equation has two real solutions

If D<0 -----> the quadratic equation has two complex solutions

<em>Find the value of D</em>

D=8^{2}-4(1)(20)=-16 -----> the quadratic equation has two complex solutions

<em>Find out the solutions</em>

substitute the values of a,b and c in the formula

x=\frac{-8(+/-)\sqrt{8^{2}-4(1)(20)}} {2(1)}

x=\frac{-8(+/-)\sqrt{-16}} {2}

Remember that

i=\sqrt{-1}

x=\frac{-8(+/-)4i} {2}

x_1=\frac{-8(+)4i} {2}=-4+2i

x_2=\frac{-8(-)4i} {2}=-4-2i

8 0
3 years ago
After an extensive advertising campaign, the manager of a company expects the proportion of potential customers that recognize a
lina2011 [118]

Answer:

Step-by-step explanation:

Hello!

The study variable is:

X: number of customers that recognize a new product out of 120.

There are two possible recordable outcomes for this variable, the customer can either "recognize the new product" or " don't recognize the new product". The number of trials is fixed, assuming that each customer is independent of the others and the probability of success is the same for all customers, p= 0.6, then we can say this variable has a binomial distribution.

The sample proportion obtained is:

p'= 54/120= 0.45

Considering that the sample size is large enough (n≥30) you can apply the Central Limit Theorem and approximate the distribution of the sample proportion to normal: p' ≈ N(p;\sqrt{\frac{p(1-p)}{n} })

The other conditions for this approximation are also met: (n*p)≥5 and (n*q)≥5

The probability of getting the calculated sample proportion, or lower is:

P(X≤0.45)= P(Z≤\frac{0.45-0.6}{\sqrt{\frac{0.6*0.4}{120} } })= P(Z≤-3.35)= 0.000

This type of problem is for the sample proportion.

I hope this helps!

5 0
3 years ago
Other questions:
  • a store marks up sporting goods 27%. which expression equals the retail price of an item with an original cost of p dollars is i
    14·1 answer
  • You roll a six-sided die twice. What is the probability of rolling a 2 and then an odd number?​
    12·2 answers
  • 7•7+3(4•4+3+2) what is the answer to this?????
    10·2 answers
  • Question 3. Let f:X --&gt; Y be a function. (a) Recall that for C CY, the inverse image of C is the set f-1(C) = {x E X|f(x) E C
    12·1 answer
  • Part a) What is the radius of the circle?
    14·2 answers
  • Derive the equation of the parabola with a focus at (-5, 5) and a directrix of y = -1. (2 points) Please help
    13·1 answer
  • Find the measure of the missing side
    9·2 answers
  • In the diagram a || b. Use the diagram to answer the question. If m&lt;1= 36°, what is m&lt;5
    6·1 answer
  • Can some one help me please?? x+7 1/3=18 2/3
    8·1 answer
  • Marking brainliest <br><br> Someone use this as a sentence, and pls don’t use outside sources.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!