Answer:
The answer should be D. 120 degrees
Let x=the first number
Then x+7=second number
And 4(x+7)+2=third number (2 more than 4 times the second)
Now we are told that:
x+(x+7)+(4(x+7)+2)=85 get rid of parentheses
x+x+7+4x+28+2=85 simplify
6x+37=85 subtract 37 from each side
6x+37-37=85-37
6x=48
x=8---first number
x+7=8+7=15 second number
4(x+7)+2=4*15+2=62 third number
CK
8+15+62=85
85=85
Answer:
1 box contains x and 2 boxes contain negative signs.
Step-by-step explanation:
Representing x minus 2 using algebra tiles ;
x is positive ; Coefficient of x
2 is negative
Hence,
One box will will contain x (since the Coefficient of x is one)
The other value is a constant, hence the value if its Coefficient ; this means we'll have 2 boxes of negative sign.