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
Ghella [55]
3 years ago
5

Please help thanks very much

Mathematics
1 answer:
erik [133]3 years ago
4 0
X/(x+5) = (x-2)/(x+1)
x(x+1) = (x -2) (x + 5)
x^2 + x = x^2 - 2x + 5x - 10
 x = 3x - 10
3x - x = 10
2x = 10
  x = 5

answer is A
5

You might be interested in
Describe whether the equation y-3x=7 is a function
Gala2k [10]

y - 3x = 7

can be written as

y = 3x + 7

For every value of x there is a unique value of y.  For example when x = 0 y = 3(0) + 7 = 7

Yes it is a function.

In particular it is a one-to-one function.

8 0
3 years ago
Solve each system by elemination, 4x+8y=20 and -4x+2y=-30
ludmilkaskok [199]
The sum of the left side of these two equations is equal to the same of the right side is these two equations
4x+8y + (-4x+2y) = 20 + 30
10y =50 ( x is eliminated)
y=5
Take this into the second equation
-4x +2y = 30
-4x + 2*5 = 30
x=-5

So x=-5
y=5
5 0
3 years ago
The score of golfers for a particular course follows a normal distribution that has a mean of 73 and a standard deviation of 3.
Artemon [7]

Answer:

P(X \geq 74) = 0.3707

Step-by-step explanation:

We are given that the score of golfers for a particular course follows a normal distribution that has a mean of 73 and a standard deviation of 3.

Let X = Score of golfers

So, X ~ N(\mu=73,\sigma^{2}=3^{2})

The z score probability distribution is given by;

           Z = \frac{X-\mu}{\sigma} ~ N(0,1)

where, \mu = population mean = 73

           \sigma = standard deviation = 3

So, the probability that the score of golfer is at least 74 is given by = P(X \geq 74)

 P(X \geq 74) = P( \frac{X-\mu}{\sigma} \geq \frac{74-73}{3} ) = P(Z \geq 0.33) = 1 - P(Z < 0.33)

                                               =  1 - 0.62930 = 0.3707                  

Therefore, the probability that the score of golfer is at least 74 is 0.3707 .

3 0
3 years ago
Which of the following will you construct in this lesson?
Vikentia [17]

Answer:

The question is not complete or you forgot to attatch the image. Repost your question

8 0
2 years ago
Solve for x: x/7 - 3 ≥ 8.
stellarik [79]

Answer:

x is more than or equal to 77

Step-by-step explanation:

5 0
3 years ago
Other questions:
  • Ten friends share 6 pizza what fraction does each friend get
    11·2 answers
  • Plz help me do this homework<br><img src="https://tex.z-dn.net/?f=6ac%20-%2015ad%20-%208bc%20%2B%202bd" id="TexFormula1" title="
    11·1 answer
  • Divisibility rule for 4.
    12·2 answers
  • A(a+5) expand and simplify
    14·2 answers
  • I'm lost and I really need help on learning how to solve this problem
    11·1 answer
  • Order the numbers from least (top) to greatest (bottom). Move to Bottom -9 |-6| |-5| -4 |-3| |-2| |1
    5·1 answer
  • What is the range of first 4 even numbers greater than 7?
    11·1 answer
  • Hi, what’s the area and formula?
    15·1 answer
  • PLS PLS PLS HELP PLSSS
    12·1 answer
  • Find the equation of the linear function represented by the table below in slope-intercept form
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!