Answer:
8. -6
Step-by-step explanation:
Answer:
3,465 in³
Step-by-step explanation:
V=LWH
V=21 x 11 x 15 (the height of the water)
V= 3465
Answer:
a) 2a
b) -a + b
c) -b -a
Step-by-step explanation:
a) From C, you just go down with a twice.
b) From A, you go up the a hence -a, then you go down b so -a + b.
c) From B, you go down b to O then you go up a to C.
The correct answer is D. 73 • 5 • 74
Explanation:
In mathematics, multiplication can be represented by using the symbol × or the symbol ·. Moreover, multiplication can be also represented just by leaving the numbers or values side by side without any symbol. For example, the expression 5x + y implies 5 should be multiplied by x. In this context, the expression (73)5 • 74 indicates 5 should be multiplied by 74, and the result of this should be multiplied by 73 as the lack of symbol indicates multiplication. Therefore, this is equivalent to 73 • 5 • 74.
Answer:
The equation has 2 non real solutions.
Step-by-step explanation:
Given:
![x ^2 = 4x - 5](https://tex.z-dn.net/?f=x%20%5E2%20%3D%204x%20-%205)
To Find:
The solutions of the equation = ?
Solution:
Lets find the solution using the quadratic equation formula
![x ^2 = 4x - 5](https://tex.z-dn.net/?f=x%20%5E2%20%3D%204x%20-%205)
![x^2-4x +5 = 0](https://tex.z-dn.net/?f=x%5E2-4x%20%2B5%20%3D%200)
![x = \frac{-b \pm \sqrt{b^2-4ac}}{2a}](https://tex.z-dn.net/?f=x%20%3D%20%20%20%5Cfrac%7B-b%20%5Cpm%20%20%5Csqrt%7Bb%5E2-4ac%7D%7D%7B2a%7D)
Here
a = 1
b =-4
c = 5
Now Substituting the values,
![x = \frac{-(-4) \pm \sqrt{(-4)^2-4(1)(5)}}{2(1)}](https://tex.z-dn.net/?f=x%20%3D%20%20%20%5Cfrac%7B-%28-4%29%20%5Cpm%20%20%5Csqrt%7B%28-4%29%5E2-4%281%29%285%29%7D%7D%7B2%281%29%7D)
![x = \frac{4\pm \sqrt{16-20}}{2}](https://tex.z-dn.net/?f=x%20%3D%20%20%20%5Cfrac%7B4%5Cpm%20%20%5Csqrt%7B16-20%7D%7D%7B2%7D)
![x = \frac{4\pm \sqrt{-4}}{2}](https://tex.z-dn.net/?f=x%20%3D%20%20%20%5Cfrac%7B4%5Cpm%20%20%5Csqrt%7B-4%7D%7D%7B2%7D)
![x = \frac{4\pm \sqrt{4}\times \sqrt{-1}}{2}](https://tex.z-dn.net/?f=x%20%3D%20%20%20%5Cfrac%7B4%5Cpm%20%20%5Csqrt%7B4%7D%5Ctimes%20%5Csqrt%7B-1%7D%7D%7B2%7D)
![x = \frac{4\pm 2 \sqrt{-1}}{2}](https://tex.z-dn.net/?f=x%20%3D%20%20%20%5Cfrac%7B4%5Cpm%202%20%5Csqrt%7B-1%7D%7D%7B2%7D)
![x = \frac{4\pm 2i}{2}](https://tex.z-dn.net/?f=x%20%3D%20%20%20%5Cfrac%7B4%5Cpm%202i%7D%7B2%7D)
![x= \frac{4-2i}{2}](https://tex.z-dn.net/?f=x%3D%20%5Cfrac%7B4-2i%7D%7B2%7D)
x= 2 + i x= 2-i