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
ivann1987 [24]
3 years ago
13

Which is the standard form of the equation 8n + 4 = -2n + 9 ? *

Mathematics
1 answer:
stepladder [879]3 years ago
7 0
Solution is n= 1/2 and alternate n= 0.5, n= 2-1
You might be interested in
The sum of three consecutive terms in an arithmetic sequence is 27, and their product is 585. find the three terms.
sammy [17]
\text{the three consecutive terms in an arithmetic sequence}\\a;\ a+d;\ a+2d\\\\\text{system of equals}\\\\ \left\{\begin{array}{ccc}a+a+d+a+2d=27\\a(a+d)(a+2d)=585\end{array}\right\\ \left\{\begin{array}{ccc}3a+3d=27&|:3\\a(a+d)(a+2d)=585\end{array}\right\\ \left\{\begin{array}{ccc}a+d=9&\to d=9-a\\a(a+d)(a+2d)=585\end{array}\right\\
\text{substitute to the second equation}\\\\a(a+9-a)(a+2(9-a))=585\\\\a(9)(a+18-2a)=585\\9a(18-a)=585\ \ \ |:9\\a(18-a)=65\\18a-a^2=65\ \ \ |\text{change the signs}\\a^2-18a=-65\\a^2-2a\cdot9=-65\ \ \ |+9^2\\\underbrace{a^2-2a\cdot9+9^2}_{(a-b)^2=a^2-2ab+b^2}=-65+9^2\\(a-9)^2=16\to a-9\pm\sqrt{16}\\a-9=-4\ \vee\ a-9=4\ \ \ |+9\\a=5\ \vee\ a=13\\\\d=9-5=4\ \vee\ d=9-13=-4
Answer:\ a=5;\ a+d=9; a+2d=13\ vee\ a=13;\ a+d=9;\ a+2d=5

5 0
3 years ago
Three pizzas are shared equally among 12 people.what fraction of pizza will each person get
8_murik_8 [283]

Answer:

1/4

Step-by-step explanation:

3/12 =0.25

0.25 = 1/4

8 0
2 years ago
Read 2 more answers
What is the exact volume of the sphere?
sasho [114]
We know, Volume of a Sphere = 4/3 πr³
V = 4/3 * π * (12.3)³
V = 4/3 * π * 1860.71
V = <span>2481.156π cm³

In short, Your Answer would be Option A

Hope this helps!</span>
6 0
3 years ago
Read 2 more answers
The cost for Andrea to produce several units of a certain item is $336 plus $12 per unit. She sells this item for $28 per unit.
Morgarella [4.7K]
Profit will be achieved when the money earned is greater than the money spent so,
336 + (n*12) = n*28  any subsequent units sold would result in profit
336 = 28n - 12n
336 = 16n
=>  n = 336/16 = 21
21 units must be sold to draw even any more would result in profit
3 0
3 years ago
Please help :) I have no clue &amp; math isn’t my strong subject.
melisa1 [442]

Equation of a line that is perpendicular to given line is y=\frac{-7}{4} x+\frac{7}{4}.

Equation of a line that is parallel to given line is y=\frac{4}{7} x-\frac{69}{7}.

Solution:

Given line y=\frac{4}{7} x+4.

Slope of this line, m_1 = \frac{4}{7}

$\text{Slope of perpendicular line} = \frac{-1}{\text{Slope of the given line} }

                                   $m_2=\frac{-1}{m_1}

                                          $=\frac{-1}{\frac{4}{7} }

Slope of perpendicular line, m_2=\frac{-7}{4}

Passes through the point (–7, 5). Here x_1=-7, y_1=5.

Point-slope formula:

y-y_1=m(x-x_1)

$y-(-7)=\frac{-7}{4} (x-5)

$y+7=\frac{-7}{4} x+\frac{35}{4}

Subtract 7 from both sides, we get

$y=\frac{-7}{4} x+\frac{7}{4}

Equation of a line that is perpendicular to given line is y=\frac{-7}{4} x+\frac{7}{4}.

To find the parallel line:

Slopes of parallel lines are equal.

m_1=m_3

$m_3=\frac{4}{7}

Passes through the point (–7, 5). Here x_1=-7, y_1=5.

Point-slope formula:

$y-(-7)=\frac{4}{7} (x-5)

$y+7=\frac{4}{7} x-\frac{20}{7}

Subtract 7 from both sides,

$y=\frac{4}{7} x-\frac{69}{7}

Equation of a line that is parallel to given line is y=\frac{4}{7} x-\frac{69}{7}.

7 0
3 years ago
Other questions:
  • Write in equation of the line containing the points (-8,-8) and (-9,-10
    13·1 answer
  • Estimate the sun by round each number to the nearest whole number?<br><br> 1.78+4.25
    8·2 answers
  • Find the product <br><br>(-4)(-9)(-2)​
    14·2 answers
  • Last year, Austin, Texas received 23.5 inches of rainfall. This year, Austin received 21.2 inches of rainfall. Find the percent
    12·1 answer
  • The temperature in a town is 24.9 Fahrenheit during the day and -24.2 Fahrenheit at night. Find the difference in the temperatur
    11·1 answer
  • Today Al bought 36 hats and now has triple the
    8·1 answer
  • How do you solve this?
    9·1 answer
  • If mLP = 17 in., and mNP = 4 cm, mLN = ____ ??
    9·1 answer
  • Can some one help me with this question its hard :( down below ill give brainliest
    14·1 answer
  • 3 is multiplied by the difference of 7 and a number
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!