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
nikdorinn [45]
3 years ago
15

Is my answer correct? Please see attachment and notify me.

Mathematics
2 answers:
statuscvo [17]3 years ago
6 0
Last time I checked that was about right, but it's been a few years since then.

Oksana_A [137]3 years ago
3 0
Your answer looks correct.

You might be interested in
HELP simple question
lawyer [7]

Answer:

I think it’s step 2 where she distributed the exponents incorrectly but she got it right so since no explanation is really needed then I guess it’s step 2.

step 1 where she divided 5 on both sides. Step 3 is also correct since the answer is 0. so step 2 had the mistake.

5 0
3 years ago
Read 2 more answers
Find the 13th term of the arithmetic sequence -3x+7, -5x+3, -7x-1, ...
oksano4ka [1.4K]

Answer:

a₁₃ = - 27x - 41

Step-by-step explanation:

The nth term of an arithmetic sequence is

a_{n} = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = - 3x + 7

d = a₂ - a₁ = - 5x + 3 - (- 3x + 7)

                 = - 5x + 3 + 3x - 7

                 = - 2x - 4

Then

a₁₃ = - 3x + 7 + 12(- 2x - 4)

     = - 3x + 7 - 24x - 48

     = - 27x - 41

3 0
3 years ago
PLEASE HELP &amp; SHOW WORK , ITS URGENT <br> it’s appreciated &lt;3 !!
natta225 [31]

Answer:

5

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Prove the following by induction. In each case, n is apositive integer.<br> 2^n ≤ 2^n+1 - 2^n-1 -1.
frutty [35]
<h2>Answer with explanation:</h2>

We are asked to prove by the method of mathematical induction that:

2^n\leq 2^{n+1}-2^{n-1}-1

where n is a positive integer.

  • Let us take n=1

then we have:

2^1\leq 2^{1+1}-2^{1-1}-1\\\\i.e.\\\\2\leq 2^2-2^{0}-1\\\\i.e.\\2\leq 4-1-1\\\\i.e.\\\\2\leq 4-2\\\\i.e.\\\\2\leq 2

Hence, the result is true for n=1.

  • Let us assume that the result is true for n=k

i.e.

2^k\leq 2^{k+1}-2^{k-1}-1

  • Now, we have to prove the result for n=k+1

i.e.

<u>To prove:</u>  2^{k+1}\leq 2^{(k+1)+1}-2^{(k+1)-1}-1

Let us take n=k+1

Hence, we have:

2^{k+1}=2^k\cdot 2\\\\i.e.\\\\2^{k+1}\leq 2\cdot (2^{k+1}-2^{k-1}-1)

( Since, the result was true for n=k )

Hence, we have:

2^{k+1}\leq 2^{k+1}\cdot 2-2^{k-1}\cdot 2-2\cdot 1\\\\i.e.\\\\2^{k+1}\leq 2^{(k+1)+1}-2^{k-1+1}-2\\\\i.e.\\\\2^{k+1}\leq 2^{(k+1)+1}-2^{(k+1)-1}-2

Also, we know that:

-2

(

Since, for n=k+1 being a positive integer we have:

2^{(k+1)+1}-2^{(k+1)-1}>0  )

Hence, we have finally,

2^{k+1}\leq 2^{(k+1)+1}-2^{(k+1)-1}-1

Hence, the result holds true for n=k+1

Hence, we may infer that the result is true for all n belonging to positive integer.

i.e.

2^n\leq 2^{n+1}-2^{n-1}-1  where n is a positive integer.

6 0
3 years ago
For a quantity that changes frequently from month to month, the best kind of graph is a pie chart.
lana66690 [7]
For a quantity that changes frequently from month to month, the best kind of graph is a pie chart.a true
3 0
3 years ago
Read 2 more answers
Other questions:
  • A lifeguard earns $10.80 an hour for a 40-hour week and times his base pay for every hour worked over the first 40 hours. If he
    6·1 answer
  • Find the number of permutations in the word “embarrass”.
    5·1 answer
  • Can someone please help me?​
    7·1 answer
  • Stella and Brianna work at a furniture store. Stella is paid $190 per week plus 7% of her total sales in dollars, xx, which can
    15·1 answer
  • Johnny's drink coaster has a radius of 4 inches. what is the coasters diameter
    7·1 answer
  • I need help ! will mark brainliest!! :)
    9·2 answers
  • Solve the equation <br><br> -3x - 5 =16 <br><br> What does x =??
    10·2 answers
  • Help?? PLS??ASAP??YES?? TY?
    14·2 answers
  • Find the value of a.
    6·1 answer
  • The points {(-3, 2), (0, 1), (4,5)} are on the graph of function f. What are the coordinates of these threepoints after a horizo
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!