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
siniylev [52]
3 years ago
12

Answers please. First to answer all of them correctly gets brainliest.

Mathematics
1 answer:
Rashid [163]3 years ago
3 0

Answer:

1: Graph 4

2: Graph 2 (the first one in the third picture)

3: I got $422, so $420, is probably the correct answer.

Step-by-step explanation:

If I helped, a brainliest would be greatly appreciated!

You might be interested in
A toolbox contains 12 screwdrivers and 11 wrenches. Each screwdriver has a mass of 1,298 grams, and each wrench has a mass of 2,
kupik [55]

Answer:

Each screwdriver has a mass of 1,298 grams, and each wrench has a mass of 2,282 grams.

Step-by-step explanation:

8 0
2 years ago
Last year, sales at a book store increased from $5,000 to $10,000. This year, sales decreased to $5,000 from $10,000. What perce
suter [353]

Sales increased 50% last year, from $5,000 to $10,000. When sales dropped from $10,000 to $5,000 this year, sales decreased 50%

5 0
3 years ago
Let a1, a2, a3, ... be a sequence of positive integers in arithmetic progression with common difference
Bezzdna [24]

Since a_1,a_2,a_3,\cdots are in arithmetic progression,

a_2 = a_1 + 2

a_3 = a_2 + 2 = a_1 + 2\cdot2

a_4 = a_3+2 = a_1+3\cdot2

\cdots \implies a_n = a_1 + 2(n-1)

and since b_1,b_2,b_3,\cdots are in geometric progression,

b_2 = 2b_1

b_3=2b_2 = 2^2 b_1

b_4=2b_3=2^3b_1

\cdots\implies b_n=2^{n-1}b_1

Recall that

\displaystyle \sum_{k=1}^n 1 = \underbrace{1+1+1+\cdots+1}_{n\,\rm times} = n

\displaystyle \sum_{k=1}^n k = 1 + 2 + 3 + \cdots + n = \frac{n(n+1)}2

It follows that

a_1 + a_2 + \cdots + a_n = \displaystyle \sum_{k=1}^n (a_1 + 2(k-1)) \\\\ ~~~~~~~~ = a_1 \sum_{k=1}^n 1 + 2 \sum_{k=1}^n (k-1) \\\\ ~~~~~~~~ = a_1 n +  n(n-1)

so the left side is

2(a_1+a_2+\cdots+a_n) = 2c n + 2n(n-1) = 2n^2 + 2(c-1)n

Also recall that

\displaystyle \sum_{k=1}^n ar^{k-1} = \frac{a(1-r^n)}{1-r}

so that the right side is

b_1 + b_2 + \cdots + b_n = \displaystyle \sum_{k=1}^n 2^{k-1}b_1 = c(2^n-1)

Solve for c.

2n^2 + 2(c-1)n = c(2^n-1) \implies c = \dfrac{2n^2 - 2n}{2^n - 2n - 1} = \dfrac{2n(n-1)}{2^n - 2n - 1}

Now, the numerator increases more slowly than the denominator, since

\dfrac{d}{dn}(2n(n-1)) = 4n - 2

\dfrac{d}{dn} (2^n-2n-1) = \ln(2)\cdot2^n - 2

and for n\ge5,

2^n > \dfrac4{\ln(2)} n \implies \ln(2)\cdot2^n - 2 > 4n - 2

This means we only need to check if the claim is true for any n\in\{1,2,3,4\}.

n=1 doesn't work, since that makes c=0.

If n=2, then

c = \dfrac{4}{2^2 - 4 - 1} = \dfrac4{-1} = -4 < 0

If n=3, then

c = \dfrac{12}{2^3 - 6 - 1} = 12

If n=4, then

c = \dfrac{24}{2^4 - 8 - 1} = \dfrac{24}7 \not\in\Bbb N

There is only one value for which the claim is true, c=12.

3 0
2 years ago
Is 4-6x=4 no solution
Basile [38]
No it has a solution
X=0

Subtract 4 from both sides to get -6x=0
Divide by -6 on both sides you get x=0
4 0
3 years ago
Read 2 more answers
I need help form my text that is do today. But I can’t figure this one out
melamori03 [73]

Answer:

Its D thats the answer

Step-by-step explanation:

5 0
2 years ago
Other questions:
  • 20 POINTS!!
    9·1 answer
  • I will give out BRAINLIEST for the correct answer!
    15·1 answer
  • (Picture) MULTIPLYING POLYNOMIALS AND SIMPLIFYING EXPRESSIONS PLEASE HELP!!!!
    14·1 answer
  • Find the measure of angle b
    15·2 answers
  • when you reverse the digits in a certain two-diget number you increase it value by 27. What is the number if the sum of its digi
    11·2 answers
  • The image shows a quadrilateral inscribed in a circle. Select ALL true statements.
    15·1 answer
  • I really need help on this:3 2/4+ 2 3/4+ 2 3/4+ 2 1/4+ 1 1/4+ 1
    7·1 answer
  • 30. TRAVEL Before starting her vacation, Sari's car had 23,500 miles on the
    13·1 answer
  • The diameter of a circle is 635 inches.
    6·2 answers
  • Jorge's math grade is calculated using a weighted average. Quizzes are worth 30%, homework is worth 10%, unit tests are worth 40
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!