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
marishachu [46]
3 years ago
8

(08.05)

Mathematics
1 answer:
Readme [11.4K]3 years ago
5 0
The mistake is in step 3:

I: −2m =−12 − 2n
II: 2m = 8 + 8n

the student set both right sides of the equations equal (−12 − 2n = 8 + 8n), but the left sides aren't equal: first equation has -2m, second has +2m so the signs of one of the equations must be inverted first
You might be interested in
Explain the difference between the graphs of :
charle [14.2K]

Answer:

The only difference is that for any positive value of 'x' g(X) and h(X) will be same and for any negative value of 'x' g(x) and h(x) will be different.

Step-by-step explanation:

Given

f(x)= |x|

g(x) = |x+5|\\\\h(x)= |x| +5

|x| is modulus of x so modulus makes negative value as psoitive

for example

|3|= 3

|-3|=3

now we will solve for the above

For x=4

g(4)=|4+5|\\=|9|\\=9

and

h(4)=|4| +5\\=4 +5\\=9

Now for x=-4

g(-4)=|-4+5|\\=|1|\\=1

and

h(-4)=|-4| +5\\=4 +5\\=9

so for positive value it is same and for negative value it is different

7 0
3 years ago
A population, P, of birds is doubling in size each year, according to the model P = 100(2t), where t reperesents years. What was
mina [271]
The initial population size was 200
5 0
2 years ago
Read 2 more answers
Use the definition f ′(x) = h0f(x + h) - f(x)h to find the derivative. f(x)=x+2
NNADVOKAT [17]

Answer:

f'(x) = 1

General Formulas and Concepts:

<u>Calculus</u>

  • Limit Properties: \lim_{n \to a} c = c
  • Definition of a Derivative: f'(x)= \lim_{h \to 0} \frac{f(x+h)-f(x)}{h}

Step-by-step explanation:

<u>Step 1: Define</u>

f(x) = x + 2

<u>Step 2: Find derivative</u>

  1. Substitute:                         f'(x)= \lim_{h \to 0} \frac{((x + h) + 2)-(x+2)}{h}
  2. Distribute:                          f'(x)= \lim_{h \to 0} \frac{x + h + 2-x-2}{h}
  3. Combine like terms:         f'(x)= \lim_{h \to 0} \frac{h}{h}
  4. Divide:                               f'(x)= \lim_{h \to 0} 1
  5. Evaluate:                           f'(x)= 1
8 0
2 years ago
Which expression is equivalent to the expression 22 – 10 – 7.5?
Sergeu [11.5K]

Answer:

24.5-9-6

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Please Solve for x<br> Log15 1 =x
Fiesta28 [93]
   
\bold{\log_{15} (1) = x}\\\\&#10;\bold{\Longrightarrow~~~15^x = 1}\\\\&#10;\Longrightarrow~~~\boxed{\bold{x = 0}}



3 0
2 years ago
Other questions:
  • What is a factor of 18 and 30 ?
    7·2 answers
  • How to convert 147.9 price per liter to price per gallon 
    11·2 answers
  • if one store is selling 3/4 of a bushel of apples for nine dollars and another store is selling 2/3 of a bushel of apples for ni
    8·1 answer
  • The school currently has 30 classrooms. with the addition there will be 40 classrooms. What percentage of the current number of
    14·1 answer
  • Ronna put on a sticker in the shape of a parallelogram. the sticker had a base of 6.5 cm and a height of 10 10.1 centimeters. wh
    10·1 answer
  • Why did the donkey get q passport​
    8·1 answer
  • Missy is 1.5 meters tall and cast a 9-meter shadow. How long is the shadow of a 6-meter flagpole beside.
    13·2 answers
  • The pathway of a frog jumping onto a lily pad can be represented by the equation h= -0.5t^2 +3t+2
    12·1 answer
  • 5.5 minutes = 330 seconds<br> A. True<br> B. False
    14·2 answers
  • A right triangle has a leg of length 5 yards and a hypotenuse of length 18 yards. Find the length of the other leg. Provide an a
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!