Let's assume
that number is x
now, we are given
The difference between nine times a number an 7 is -70
nine times of that number is 9x
so, we can set up equation
![9x-7=-70](https://tex.z-dn.net/?f=%209x-7%3D-70%20)
now, we can solve for x
![9x-7+7=-70+7](https://tex.z-dn.net/?f=%209x-7%2B7%3D-70%2B7%20)
![9x=-63](https://tex.z-dn.net/?f=%209x%3D-63%20)
![x=-7](https://tex.z-dn.net/?f=%20x%3D-7%20)
so, number is -7.........Answer
given
![{n}^{2} + {n}^{2} + {n}^{2}](https://tex.z-dn.net/?f=%20%7Bn%7D%5E%7B2%7D%20%20%2B%20%20%7Bn%7D%5E%7B2%7D%20%20%2B%20%20%7Bn%7D%5E%7B2%7D%20)
for n = -1
substitute them into the equation
![= ( { - 1})^{2} + ( { - 1})^{2} + ( { - 1)}^{2}](https://tex.z-dn.net/?f=%20%3D%20%28%20%7B%20-%201%7D%29%5E%7B2%7D%20%20%2B%20%28%20%7B%20-%201%7D%29%5E%7B2%7D%20%20%2B%20%28%20%20%7B%20-%201%29%7D%5E%7B2%7D%20)
when you square a negative number, it becomes positive.
because negative×negative = positive
![= 1 + 1 + 1](https://tex.z-dn.net/?f=%20%3D%201%20%2B%201%20%2B%201)
![= 3](https://tex.z-dn.net/?f=%20%3D%203)
as final answer
Answer:
<h2>See the explanation and the image.</h2>
Step-by-step explanation:
The inequality
means
.
y = 0, satisfies the above inequality, so the arrows will be towards the x axis.
Now, we need to draw 5x < 8 + 4y.
First, lets draw the equation of 5x = 8 + 4y.
y = 1 gives x = 2.4 & y = 0 gives x = 1.6.
Hence, the above equation passes through (2.4, 1) and (1.6, 0).
The point (0, 0) satisfies the inequality 5x < 8 + 4y. Hence, the arrows will be towards the origin.
The solution will be the area of APQ except any point on PQ, as PQ is nothing but the line 5x = 8 + 4y.
Answer:
The answer is equals because they both equal 5
Step-by-step explanation: