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kobusy [5.1K]
3 years ago
10

J = 18 − 2j is it a identity

Mathematics
1 answer:
mixas84 [53]3 years ago
8 0
I don’t understand the question you’re asking? If you could give more context I would love to help!
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X/-2=4, X/3+13=13, Z/2+2=4 plz show ur work and explain how u did it
AVprozaik [17]
\dfrac{x}{-2}=4\ \ \ |multiply\ both\ sides\ by\ (-2)\\\\(-2)\cdot\dfrac{x}{-2}=(-2)\cdot4\\\\\boxed{x=-8}\\\\\dfrac{x}{3}+13=13\ \ \ |subtract\ 13\ from\ both\ sides\\\\\dfrac{x}{3}+13-13=13-13\\\\\dfrac{x}{3}=0\ \ \ |multpily\ both\ sides\ by\ 3\\\\\not3^1\cdot\dfrac{x}{\not3_1}=0\\\\\boxed{x=0}

\dfrac{z}{2}+2=4\ \ \ |subtract\ 2\ from\ both\ sides\\\\\dfrac{z}{2}+2-2=4-2\\\\\dfrac{z}{2}=2\ \ \ \ |multiply\ both\ sides\ by\ 2\\\\\not2^1\cdot\dfrac{z}{\not2_1}=2\cdot2\\\\\boxed{z=4}
6 0
3 years ago
In order to be invited to tutoring or extension activities a students performance 20 point higher or lower than average for the
GalinKa [24]

Answer:


Step-by-step explanation:For the student to be considered for the tutoring or extension activities, his/her score must be 20 points lower or higher than the average.


The average is given as 105, that means:


Minimum score to be considered = 105 - 20 = 85


Maximum score to be considered = 105 + 20 = 125


If p represents the performance of a student, then this inequality will be represented as follows:


                    85 ≤ p ≤125    


6 0
3 years ago
3(- 1) – 2(2x + 1) = 8(x - 1)?
Nitella [24]

Answer:

x = 1/4

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

6 0
4 years ago
Are 165° and 1965° coterminal?​
MatroZZZ [7]

two angles are coterminal, namely land on the same spot on the circle.

let's check.

let's firstly divide 1965° by 360°, since 360° is a full circle, that way we know <u>how many full circles are</u> in 1965°.

1965 ÷ 360, gives us a quotient of 5 with some remainder.

5 * 360 = 1800, 5 full circles

if we subtract the full circles from 1965

1965 - 1800 = 165

low and behold, the remainder from that division is 165°  ✔

in other words, 1965°, goes around the circle 5 times and then lands 165° after all that, in the same spot as 165°.

5 0
3 years ago
The solution set of the inequality 2x − y &gt; 2 consists of all the points __ ? the line __ ?
GalinKa [24]

Answer:

  • b - below; y = 2x − 2

Step-by-step explanation:

  • 2x − y > 2
  • 2x - y + y - 2 > 2 + y - 2
  • 2x - 2 > y
  • y < 2x - 2

Solution is the points below the line y = 2x - 2

<u>Correct option is:</u>

  • b - below; y = 2x − 2
7 0
4 years ago
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