Answer:
-5
Step-by-step explanation:
add them together (-4)+(-1) make a t chart it'll help you out
Answer:
88
Step-by-step explanation:
![\frac{86 + 94 + 88 + 95 + 89 + x}{6} = 90](https://tex.z-dn.net/?f=%20%5Cfrac%7B86%20%2B%2094%20%2B%2088%20%2B%2095%20%2B%2089%20%2B%20x%7D%7B6%7D%20%20%3D%2090)
The mean would be the sum of all the math quiz grades divided by the number of quizzes taken.
Solve for x:
![86 + 94 + 88 + 95 + 89 + x = 540](https://tex.z-dn.net/?f=86%20%2B%2094%20%2B%2088%20%2B%2095%20%2B%2089%20%2B%20x%20%3D%20540)
![452 + x = 540](https://tex.z-dn.net/?f=452%20%2B%20x%20%3D%20540)
![x = 88](https://tex.z-dn.net/?f=x%20%3D%2088)
Thus, Allen needs at least an 88 to obtain a mean of at least 90.
Answer: adjoining HAVE A GREAT DAY
Answer:
<h2>A.Multiplication Property of Equality</h2>
Step-by-step explanation:
![\left\{\begin{array}{ccc}2x+2y=14\\-x+y=5&\text{\underline{multiply both sides by 2}}\end{array}\right\\\\\boxed{\underline{+\left\{\begin{array}{ccc}2x+2y=14\\-2x+2y=10\end{array}\right}}\qquad\text{add both sides of the equations}\\.\qquad\qquad4y=24\qquad\text{divide both sides by 4}\\.\qquad\qquad y=6\\\\\text{put the value of y to the second equation:}\\\\-x+6=5\qquad\text{subtract 6 from both sides}\\-x=-1\qquad\text{change the signs}\\x=1](https://tex.z-dn.net/?f=%5Cleft%5C%7B%5Cbegin%7Barray%7D%7Bccc%7D2x%2B2y%3D14%5C%5C-x%2By%3D5%26%5Ctext%7B%5Cunderline%7Bmultiply%20both%20sides%20by%202%7D%7D%5Cend%7Barray%7D%5Cright%5C%5C%5C%5C%5Cboxed%7B%5Cunderline%7B%2B%5Cleft%5C%7B%5Cbegin%7Barray%7D%7Bccc%7D2x%2B2y%3D14%5C%5C-2x%2B2y%3D10%5Cend%7Barray%7D%5Cright%7D%7D%5Cqquad%5Ctext%7Badd%20both%20sides%20of%20the%20equations%7D%5C%5C.%5Cqquad%5Cqquad4y%3D24%5Cqquad%5Ctext%7Bdivide%20both%20sides%20by%204%7D%5C%5C.%5Cqquad%5Cqquad%20y%3D6%5C%5C%5C%5C%5Ctext%7Bput%20the%20value%20of%20y%20to%20the%20second%20equation%3A%7D%5C%5C%5C%5C-x%2B6%3D5%5Cqquad%5Ctext%7Bsubtract%206%20from%20both%20sides%7D%5C%5C-x%3D-1%5Cqquad%5Ctext%7Bchange%20the%20signs%7D%5C%5Cx%3D1)