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
Ber [7]
3 years ago
5

1/7= 3/4x-1 solve for x

Mathematics
2 answers:
daser333 [38]3 years ago
8 0
Hi there, first we flip the equation to 3/4x-1=1/7, Now, we add 1 to both sides which makes it 3/4x=8/7. Finally, we multiply both sides by 4/3, now, 4/3*3/4x=4/3*8/7=32/21. Therefore, x=32/21
Sergeu [11.5K]3 years ago
7 0
1/7 = 3(/4)x - 1

lets all multipled by 28
4 = 21x - 28
21x = 4 + 28
21x = 32
   x = 32/21
   x = 1 9/21 or  x = 1  3/7
You might be interested in
find two positive real numbers such that they sum to 108 and the product of the first times the square of the second is a maximu
topjm [15]

The two positive numbers are 36 and 72 which gives a sum equal to 108 and the product of 36 and the square of 72 is a maximum.

Any integer greater than zero is considered a positive number. A positive number can either be written as a number or with the "+" symbol in front of it.

Let us consider the two positive real numbers as x and y. Then, their sum is written as,

x+y=108

Then, y=108-x

And the product is written as,

P=xy²

Substitute value of y in the above equation, we get,

\begin{aligned}P&=x(108-x)^2\\&=x(11664-216x+x^2)\\&=11664x-216x^2+x^3\\&=x^3-216x^2+11664x\end{aligned}

Now, differentiate P with respect to x, and we get,

\begin{aligned}\frac{dP}{dx}&=3x^2-432x+11664\\&=x^2-144x+3888\end{aligned}

Solving the above equation to zero, we get,

\begin{aligned}x^2-144x+3888&=0\\x^2-36x-108x+3888&=0\\x(x-36)-108(x-36)&=0\\(x-108)(x-36)&=0\\x&=\text{108 or 36}\end{aligned}

Substitute values of x in y=108-x, to get values of y.

If we substitute x=108, we get the y value as zero which doesn't give the required solution.

But, if we substitute x=36, we get,

\begin{aligned}y&=108-36\\y&=72\end{aligned}

Thus, the two positive numbers are 36 and 72.

To know more about positive numbers:

brainly.com/question/1635103

#SPJ4

4 0
1 year ago
Which real-world story is represented by the addition problem (–2) + (–3) = –5?
tangare [24]

The answer is A.

If the submarine descended then it went below, and if it ascended it went above. Therefore:

"Descended 2 miles"= -2

"Then descended another 3 miles"= -3

(-2)+(-3)=-5

Adding two negatives together will give you a bigger negative so the submarine would then be 5 miles below its original location.

6 0
3 years ago
Ms. Salta buys buffalo wings for a party. If there are 3 servings per buffalo pound, exactly how many servings does she have for
gtnhenbr [62]

Answer:

Not sure how many chicken wings to make or buy as appetizers for your ... 6 whole wings (or 1.125 lbs) in order to reach a 6 oz serving of actual chicken. ... That would mean there are approximately 4 to 5 chicken wings in a pound. ... You will need approximately 3 ounces of chicken meat per person as a ...

Missing

Step-by-step explanation:

i think

3 0
3 years ago
What is the answer for this problem 6x+3=5x
liberstina [14]
Okay so the first thing you need to do is move the all the variables to one side of the equal sign

5 0
4 years ago
In the beginning of the study, a randomly selected group of 121 students scored an average of 252 words per minute on the readin
Alborosie

Answer:

Since the sample size is larger than 30, the cognitive psychologist can assume that the sampling distribution of M will be approximately normal.

Step-by-step explanation:

We use the central limit theorem to solve this question.

The Central Limit Theorem estabilishes that, for a random variable X, with mean \mu and standard deviation \sigma, a sample size larger than 30 can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}

So

Since the sample size is larger than 30, the cognitive psychologist can assume that the sampling distribution of M will be approximately normal.

5 0
3 years ago
Other questions:
  • Help me on this problem
    11·1 answer
  • What is the remainder 995 divided 35
    15·2 answers
  • What is the angle in both radians and degrees determined by an arc of length 2pi meters on a circle of radius 8 meters?
    12·1 answer
  • Help me with this question
    8·2 answers
  • Which ordered pair is a solution of the equation?
    15·1 answer
  • How far will a car traveling at 65 miles per hour travel in 6 hours?
    14·1 answer
  • Which statement is true about the scatter plot? Select all that apply.
    15·1 answer
  • The probability that is from the 60s is​
    12·1 answer
  • SERIOUS ANSWERS ONLY PLZ
    10·1 answer
  • If Rs.1760 is left after paying an income tax at the rate of 12%, find the income.​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!