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Who created the 4 quadrant?
The $x$-axis and the $y$-axis divides the rectangular coordinate system into 4 parts which we call the 4 quadrants. The rectangular coordinate system was invented by Rene Descartes. Thus, we can say that Descartes invented the 4 quadrants.
The
-axis and the 
-axis divides the rectangular coordinate system into 4 parts which we call the 4 quadrants.
The rectangular coordinate system was invented by Rene Descartes.
Thus, we can say that Descartes invented the 4 quadrants.
See lessarithmetic pattern and sequence
Given the arithmetic sequence, $a_n=-4n+3$ The first term is given by $a_1=-4(1)+3=-4+3=-1$. The second term is given by $a_2=-4(2)+3=-8+3=-5$ The third term is given by $a_3=-4(3)+3=-12+3=-9$ The 8th term is given by $a_8=-4(8)+3=-32+3=-29$ Notice from the 1st, 2nd, and 3rd terms that each term isRead more
Given the arithmetic sequence,
The first term is given by
.
The second term is given by
The third term is given by
The 8th term is given by
Notice from the 1st, 2nd, and 3rd terms that each term is made from the previous term by subtracting 4. So the common difference is -4.
See lessThe value of √(-25) + 3√(-4) + 2√(-9) is
First, we note that the square root of a negative number arises in a complex number (imaginary number). Thus, $\sqrt{-25}+3\sqrt{-4}+2\sqrt{-9}=\sqrt{25}i+3\sqrt{4}i+2\sqrt{9}i=5i+3(2i)+2(3i)$ $=5i+6i+6i=17i$.
First, we note that the square root of a negative number arises in a complex number (imaginary number).
Thus,
.
See lessWhat is x multiplied by 2?
$x$ multiplied by 2 means $x\times2=2x$. Therefore, $x$ multiplied by 2 is $2x$.
Therefore,
multiplied by 2 is 
.
See less2+3-6/3-3+9*3 simplify it
Given $2+3-6/3-3+9*3$, using the PEMDAS/BODMAS hierarchy of arithmetic operations, we first evaluate the division and the multiplication respectively to have $=2+3-2-3+27$. Then, evaluating the additions and subtractions, we have $=27$. Therefore, $2+3-6/3-3+9*3=27$
Given
,
using the PEMDAS/BODMAS hierarchy of arithmetic operations, we first evaluate the division and the multiplication respectively to have
Then, evaluating the additions and subtractions, we have
Therefore,
See lessMultiple Choice (Stats and Probability)
The median of a set of numbers is the number in the middle after the set of numbers has been arranged in order. Thus, given 4 , 10 , 7 , 7 , 6 , 9 , 3 , 8 , 9, arranging the numbers in order gives 3, 4, 6, 7, 7, 8, 9, 9, 10, and the middle number is 7. Therefore, the median of the set of numbers isRead more
The median of a set of numbers is the number in the middle after the set of numbers has been arranged in order.
Thus, given 4 , 10 , 7 , 7 , 6 , 9 , 3 , 8 , 9, arranging the numbers in order gives 3, 4, 6, 7, 7, 8, 9, 9, 10, and the middle number is 7.
Therefore, the median of the set of numbers is 7.
See lessMultiple Choices ( Algebra )
The Persian mathematician, Al-Khwarizmi, is generally regarded as the father of algebra.
The Persian mathematician, Al-Khwarizmi, is generally regarded as the father of algebra.
See lessIntermediate Algebra
$|4–8(3–12)|–|5–11|=|4–8(–9)|–|–6|=|4+72|–6=76-6=70$.
.
See lessIf 16 +4x is more than 14, what is the value of 8x
$16+4x$ is more than 14 means $16+4x>14\Rightarrow4x>14-16\Rightarrow4x>-2\Rightarrow\dfrac{4x}{4}>\dfrac{-2}{4}$ $\Rightarrow x>-\dfrac{1}{2}$. Multiplying both sides by 8, we have $8x>-\dfrac{8}{2}\Rightarrow8x>-4$
Multiplying both sides by 8, we have
See less85% of 200 is?………
85% of 200 is obtained as follows: $\dfrac{85\%}{100\%}\times\dfrac{200}=85\times2=170$.
85% of 200 is obtained as follows:
.
See less