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
Usimov [2.4K]
3 years ago
9

Please help me with question 12 :(

Mathematics
1 answer:
Nikitich [7]3 years ago
3 0

Answer:

30

Step-by-step explanation:


You might be interested in
Answerrrrrrr plsssssssss
Kaylis [27]

Answer:

7

Step-by-step explanation:

4 0
2 years ago
Grocery Mart has cookies on sale for $3 for 12 cookies. Food Shoppe has cookies on sale for $5.70 for 19 cookies. Which store ha
AnnZ [28]

Answer:

5.70 for 19

Step-by-step explanation:

4 0
3 years ago
Find the 13th term of the arithmetic sequence -3x – 1,42 + 4,112 + 9, ...
Strike441 [17]

Answer:

The 13th term is 81<em>x</em> + 59.

Step-by-step explanation:

We are given the arithmetic sequence:

\displaystle -3x -1, \, 4x +4, \, 11x  + 9 \dots

And we want to find the 13th term.

Recall that for an arithmetic sequence, each subsequent term only differ by a common difference <em>d</em>. In other words:

\displaystyle \underbrace{-3x - 1}_{x_1} + d = \underbrace{4x + 4} _ {x_2}

Find the common difference by subtracting the first term from the second:

d = (4x+4) - (-3x - 1)

Distribute:

d = (4x + 4) + (3x + 1)

Combine like terms. Hence:

d = 7x + 5

The common difference is (7<em>x</em> + 5).

To find the 13th term, we can write a direct formula. The direct formula for an arithmetic sequence has the form:

\displaystyle x_n = a + d(n-1)

Where <em>a</em> is the initial term and <em>d</em> is the common difference.

The initial term is (-3<em>x</em> - 1) and the common difference is (7<em>x</em> + 5). Hence:

\displaystyle x_n = (-3x - 1) + (7x+5)(n-1)

To find the 13th term, let <em>n</em> = 13. Hence:

\displaystyle x_{13} = (-3x - 1) + (7x + 5)((13)-1)

Simplify:

\displaystyle \begin{aligned}x_{13} &= (-3x-1) + (7x+5)(12) \\ &= (-3x - 1) +(84x + 60) \\ &= 81x + 59 \end{aligned}

The 13th term is 81<em>x</em> + 59.

3 0
3 years ago
Solve for m: 18d − 2m + 9k &lt; 5k + 10
snow_tiger [21]

18d-2m+9k < 5k+10

18d-2m < -4k +10

-2m < -4k +10 -18d

m  > \frac{-4k+10-18d}{-2} (flipped the sign because we're dividing by a negative)

m  > 2k+5+9d

4 0
3 years ago
Read 2 more answers
How do I solve 24(x-1) = -6(4-x)+18
podryga [215]

<em>So</em><em> </em><em>the</em><em> </em><em>right</em><em> </em><em>answer</em><em> </em><em>is</em><em> </em><em>1</em><em>.</em>

<em>Look</em><em> </em><em>at</em><em> </em><em>the</em><em> </em><em>attached</em><em> </em><em>picture</em>

<em>H</em><em>ope</em><em> </em><em>it</em><em> </em><em>will</em><em> </em><em>help</em><em> </em><em>you</em><em>.</em><em>.</em><em>.</em>

<em>G</em><em>ood</em><em> </em><em>luck</em><em> </em><em>on</em><em> </em><em>your</em><em> </em><em>assignment</em>

<em>~</em><em>p</em><em>r</em><em>a</em><em>g</em><em>y</em><em>a</em>

8 0
3 years ago
Read 2 more answers
Other questions:
  • There are six poles on a side of a 1 km 200 m long straight road such that there is a pole at the starting and end points of the
    6·1 answer
  • Given that a = −4, b = −3. c = −2, d = −1, which gives the correct order from least to greatest for the rational numbers on a nu
    7·2 answers
  • Driving on the North West Express-way, Debbie averaged 62 miles per hour for 3 &amp; one fourth hours. How far did she drive?
    5·1 answer
  • What is a common factor of 14, 6, 9
    9·2 answers
  • If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23
    11·1 answer
  • What is the angle supplementary to the angle measuring 165°12′?
    11·2 answers
  • How do you convert a percent into a decimal?
    6·1 answer
  • -7x-2y = -13<br> x – 2y = 11
    14·1 answer
  • Area of a composite figure​
    6·1 answer
  • "The chance of rain for Monday is 20% and Tuesday is 70%. what is the probability that it will rain Monday but not Tuesday?"
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!