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tia_tia [17]
3 years ago
9

Pls help me im so confused 5n-17=2n+1

Mathematics
2 answers:
denis-greek [22]3 years ago
8 0

Answer:

n=6

Step-by-step explanation:

5n-17=2n+1

Subtract 2n from each side

5n-2n-17=2n-2n+1

3n -17 = 1

Add 17 to each side

3n -17+17 = 1+17

3n = 18

Divide by 3

3n /3 = 18/3

n=6

tatiyna3 years ago
8 0

\large \sf \star  \: \green{Answer }\:  \star

\small \sf \fbox{n = 6}

<h3>Step-by-step explanation:</h3>

\small \sf  \mapsto \: 5n \:  - 17 = 2n + 1

subtract 2n from both side

\small \sf  \mapsto \: 5n \:  - 2n \:  - 17 = 2n \:  - 2n +  1

\small  \sf \: \mapsto \: 3n \:  - 17 = 1

Add 17 to both side

\small \sf \mapsto \: 3n \:  - 17 + 17 = 1 + 17

\small \sf \mapsto \: 3n \:  = 18

Divide 18 by 3

\small \sf \: n \:  =  \frac{18}{3} \\

n = 6

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Expressed in radian measure, 390° is equivalent to?
meriva

Answer:

Step-by-step explanation:

1° = π /180° radians

390° = 390* π / 180 radians; simplify

39*π / 18 = 13 π/ 6 ≈ 6. 81 radiants

5 0
3 years ago
The cost of a sweatshirt is 175% the cost of a T-shirt. A T-shirt costs $13.
Molodets [167]

Answer:

$68.25

Step-by-step explanation:

1. First, to find the cost of one sweatshirt, we multiply 175 by 13, and then divide by 100.

  • 175 * 13 = 2275
  • 2275/100=22.75

2. Now, we know that one sweatshirt costs $22.75. To find the cost of three sweatshirts, we multiply 22.75 by 3.

  • 22.75 * 3
  • 68.25

Therefore, the cost of 3 sweatshirts is $68.25.

8 0
2 years ago
Factor the trinomial x^2 - 7x + 10
Valentin [98]

Answer:

(x-5) (x-2)

Step-by-step explanation:

x^2 (-2x-5x) +10

basically you will write the equation down and then to double check multiply the x and then the -5 into (x-2). this can be repetitive if you get it wrong so try to do numbers that make sense.

7 0
4 years ago
How do I solve rate of change problems? (With picture) thanks!
denis-greek [22]

5)

\bf \begin{array}{|cc|cccc|ll} \cline{1-6} sodas&x&\underline{24}&28&\underline{32}&36\\ \cline{1-6} cost&y&\underline{18}&21&\underline{24}&27\\ \cline{1-6} \end{array}~\hspace{9em} (\stackrel{x_1}{24}~,~\stackrel{y_1}{18})\qquad (\stackrel{x_2}{32}~,~\stackrel{y_2}{24}) \\\\\\ slope = m\implies \cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{24-18}{32-24}\implies \cfrac{6}{8}\implies \cfrac{3}{4}

6)

\bf \begin{array}{|cc|cc|ll} \cline{1-4} year&x&0&12\\ \cline{1-4} \$&y&720&1080\\ \cline{1-4} \end{array}~\hspace{10em} (\stackrel{x_1}{0}~,~\stackrel{y_1}{720})\qquad (\stackrel{x_2}{12}~,~\stackrel{y_2}{1080}) \\\\\\ slope = m\implies \cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{1080-720}{12-0}\implies \cfrac{360}{12}\implies \cfrac{30}{1}\implies 30

7)

slope as you should already know is rise/run, or how much something moves in relation something else, namely how much the y-axis go up as the x-axis moves sideways, one moves, the other follows, but the increments will be different, sometimes the same, but usually different.

the y-intercept means, when the graph of the equation touches or intercepts the y-axis, and when that happens x = 0, or the horizontal distance is at bay.

for the slope on  6), 30 or 30/1 means, for every 1 year(x) passed, the worth(y) increased by 30, or jumped by 30 units, so as the x-axis moved 1, the y-axis moved 30.  After 12 years 30 * 12 = 360, and we add the initial 720 and we end up with 1080.

the y-intercept, well, as aforementioned is when x = 0, is year 0.

6 0
3 years ago
Read 2 more answers
Please answer! Help!
svetoff [14.1K]

Answer:

∠F = 42°

Step-by-step explanation:

similar triangles have congruent corresponding angle measures.

so if ΔABC ~ ΔEFG, then ∠B corresponds with ∠F, so ∠F = ∠B

∠F = 42°

4 0
3 years ago
Read 2 more answers
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