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raketka [301]
3 years ago
13

Help! With this question, please!

Mathematics
1 answer:
trasher [3.6K]3 years ago
3 0

Answer:

y=-1/4x+(-6)

i am not sure if you need to put the parentheses, most of the time you need to but I have never had to do it online

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In a sale, the selling price of a bicycle is reduced by 20%. Find the sale price of the bicycle, given that its normal selling p
sergij07 [2.7K]

Answer:

1-0.2=0.8

0.8*3300= 2640

5 0
3 years ago
Read 2 more answers
Solve the following equations for x,
stellarik [79]

(i) 3 csc²(<em>x</em>) - 4 = 0

3 csc²(<em>x</em>) = 4

csc²(<em>x</em>) = 4/3

sin²(<em>x</em>) = 3/4

sin(<em>x</em>) = ± √3/2

<em>x</em> = arcsin(√3/2) + 2<em>nπ</em>  <u>or</u>   <em>x</em> = arcsin(-√3/2) + 2<em>nπ</em>

<em>x</em> = <em>π</em>/3 + 2<em>nπ</em>   <u>or</u>   <em>x</em> = -<em>π</em>/3 + 2<em>nπ</em>

where <em>n</em> is any integer. The general result follows from the fact that sin(<em>x</em>) is 2<em>π</em>-periodic.

In the interval 0 ≤ <em>x</em> ≤ 2<em>π</em>, the first family of solutions gives <em>x</em> = <em>π</em>/3 and <em>x</em> = 4<em>π</em>/3 for <em>n</em> = 0 and <em>n</em> = 1, respectively; the second family gives <em>x</em> = 2<em>π</em>/3 and <em>x</em> = 5<em>π</em>/3 for <em>n</em> = 1 and <em>n</em> = 2.

(ii) 4 cos²(<em>x</em>) + 2 cos(<em>x</em>) - 2 = 0

2 cos²(<em>x</em>) + cos(<em>x</em>) - 1 = 0

(2 cos(<em>x</em>) - 1) (cos(<em>x</em>) + 1) = 0

2 cos(<em>x</em>) - 1 = 0   <u>or</u>   cos(<em>x</em>) + 1 = 0

2 cos(<em>x</em>) = 1   <u>or</u>   cos(<em>x</em>) = -1

cos(<em>x</em>) = 1/2   <u>or</u>   cos(<em>x</em>) = -1

[<em>x</em> = arccos(1/2) + 2<em>nπ</em>   <u>or</u>   <em>x</em> = 2<em>π</em> - arccos(1/2) + 2<em>nπ</em>]   <u>or</u>   <em>x</em> = arccos(-1) + 2<em>nπ</em>

[<em>x</em> = <em>π</em>/3 + 2<em>nπ</em>   <u>or</u>   <em>x</em> = 5<em>π</em>/3 + 2<em>nπ</em>]   <u>or</u>   <em>x</em> = <em>π</em> + 2<em>nπ</em>

For 0 ≤ <em>x</em> ≤ 2<em>π</em>, the solutions are <em>x</em> = <em>π</em>/3, <em>x</em> = 5<em>π</em>/3, and <em>x</em> = <em>π</em>.

7 0
3 years ago
If the difference (3x ^ 2 - 2x + 5) - (x ^ 2 + 3x - 2) is multiplied by 3x ^ 2 , what is the result, written in standard form?
galina1969 [7]
Answer: 6x^4 - 15x^3 + 27x^2

Combine like terms. Then multiply the result by 3x^2

Work:

4 0
3 years ago
Please help! I really need help.
cupoosta [38]

Answer:

i believe it is a polynomial, but I need to see the options available to give you a better answer.

Step-by-step explanation:

trust lol

3 0
3 years ago
Find the solutions to the equation.
Kitty [74]
You can write the equation using conventional symbols as
3x^2 - 2x - 5 = 0

You can recognize that the middle coefficient is equal to the sum of the other two, so those two coefficients can be used to factor the equation.
  (1/3)(3x +3)(3x -5) = 0 . . . . . put the coefficients in the form (1/a)(ax + ...)(ax + ...)  (x+1)(3x-5) = 0 . . . . . simplify

The solutions are the values of x that make one or the other of the factors equal to zero.
  x = -1
  x = 5/3
3 0
3 years ago
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