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
kondor19780726 [428]
4 years ago
7

Which expression is not equivalent to the following expression?

Mathematics
2 answers:
larisa86 [58]4 years ago
7 0

Answer: D

Step-by-step explanation:

Alexeev081 [22]4 years ago
3 0
In the above problem:  it appears that the original expression is equal to 36.

A. 3(15-3) = 3(12)=36
B. 3(15) = 45
C. 3(15+3) = 3(18)=54
D. 3(12) = 36

So it looks like choices A and D are equivalent to the original expression.
You might be interested in
Prove that (4n+1)^2(4n-1)^2 is a multiple of 8 for all integers of n.<br><br> thanks.
azamat

Answer: i think  (4n+1)^2(4n-1)^2 isnt a multiple of 8 for all integers of n because:

(4n + 1)²(4n - 1)²

= [(4n + 1)(4n - 1)]²

= (16n² - 1)²

= 16².n².n² - 2.16.n² + 1

= 8n²(32n² - 4) + 1

can see 8n²(32n² - 4) is a multiple of 8 but 1 isnt a multiple of 8

=> (4n + 1)²(4n - 1)² isnt a multiple of 8 for all integers of n.

Step-by-step explanation:

6 0
3 years ago
What if i=radical -1, what is the value of i^3
aleksklad [387]

\bf i^3\implies \sqrt{-1}\cdot \sqrt{-1}\cdot \sqrt{-1}\implies (\sqrt{-1})^2\sqrt{-1}\implies \sqrt{(-1)^2}\cdot \sqrt{-1} \\\\\\ -1\cdot i\implies \boxed{-i}

6 0
3 years ago
I don’t know the answer to that one can you help me please
dybincka [34]

Answer:

16/45

Step-by-step explanation:

Step 1:  When dividing fractions, use “KFC”.  It means Keep the first fraction, Flip the second one, and  

              Change it to multiplication

-4/20 ÷ -9/16    →    -4/20 ∙ 16/-9

Step 2:  Reduce any fractions if necessary, it makes multiplying them easier and you will have to reduce anyway at the end.  It’s easier arithmetic to reduce at this step.  The first fraction reduces because both the numerator and denominator are divisible by 4.  

-1/5  ∙   16/-9    

Step 3:  Multiply numerators and denominators together to get one fraction

(-16)/(-45)  

Step 4:  Cancel out the negatives, a negative divided by a negative is a positive.  Our final answer is

 

16/45  


4 0
4 years ago
(2a+1) - 4a(2a+1)+4a
maxonik [38]

Answer:

2a (3-4a)

Step-by-step explanation:

(2a+1)-4a(2a+1)+4a

2a+1-8a²-1+4a

= 2a+4a-8a²

=6a-8a²

= 2a(3-4a)

6 0
3 years ago
Read 2 more answers
Can someone help with this question
Reptile [31]
Question # 55

We can see the trend from the given graph. From Monday to Thursday the price kept on decreasing while on Friday it increased. So first the price decreased and then increased.

Therefore, the correct answer to this question is option C. The price decreased at the beginning of the week and then increased at the end of the week.

Question # 56.

The schedule of athlete allows no more than 75 minutes of training. This means the training time is 75 minutes or less. One round of strength training requires 8 minutes. So s rounds of strength training will require 8s minutes. One round of endurance training require 12 minutes, so e rounds of endurance training will require 12e minutes.

The total time of both these trainings can be written as:

8s + 12e

We know that the time can be 75 minutes or lesser. So we can write the inequality as:

8s + 12e ≤ 75

So, option H is the correct answer

Question 57

The given equation is:

2y = - 3(x - 2)

In order to identify the slope we need to write the equation if slope intercept form. When written in slope intercept form, the coefficient of x term is the slope of the line. In order to write in slope intercept form, isolate y on one side as shown below:

2y=-3(x-2) \\  \\ &#10;2y=-3x+6 \\  \\ &#10;y=- \frac{3}{2}x+3

So, the slope of line is -3/2.

Hence option B is the correct answer

4 0
4 years ago
Other questions:
  • Write the standard form of the equation and write the slope intercept. Need help with #7 &amp; #8. Thanks!
    11·1 answer
  • The scatterplot that represents the monthly values of stock QRS has an r
    10·1 answer
  • Help I do not understand how to find the area of circles
    6·1 answer
  • Of the following choices, which is most likely the minimum value for the function on the interval [-2, 2]
    11·1 answer
  • A woman has a total of
    5·2 answers
  • Simplify 4.51 with a power of 0<br><br> 4.51 <br> 1 <br> 0 <br> −1
    6·2 answers
  • Six of King Arthur’s knights are sitting around the Round Table eating peanuts. Since each knight suspected the others of not sh
    15·2 answers
  • Which answer describes the transformation of f(x )= x^2 − 1 to g(x) = ( x + 4 )^2 − 1?
    13·1 answer
  • 28x + 24y + 40<br> hurry
    6·1 answer
  • How much interest is earned on a $5,000 loan at 10% interest for 3 years?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!