Hello!
1) PEMDAS. Almost any expression ever
2) A coefficient is a numerical or constant quantity placed before and multiplying the variable in an algebraic expression.
3) 8.38889 yards
4) idk sorry :'(
5) X= 11
6) X = -5
7) 3(x + 5).
I hope it helps!
Answer:
Slope = -3
Step-by-step explanation:
Slope of a straight line graph is given by; change in y ÷ change in x
Slope = 
= 
= -3
Answer:In the graph you need to use quradrant 4
Step-by-step explanation:
no need
Answer:
Danielle is 7 and her counselor is 21
Step-by-step explanation:
Let x be the age of Danielle and y be the age of her counselor then:
y=3x
x+y=28
We can solve this using substitution. In this case, substitute 3x for y since y=3x...
x+3x=28
4x=28
Divide both sides by 4 (division property of equality)
x=7
y=3x=3(7)=21
Danielle is 7 and her counselor is 21
