Answer:
A
Step-by-step explanation:
Answer:
2x+5=13
2x+5-5=13-5
2x=8
Divide by 2
2x/2=8/2
x=4
Check answer:
By using substitution method
2x+5=13
2(4)+5=13
8+5=13
13=13
Answer is x=4
Answer Z = -1/4
Step-by-step explanation:
-1/3+2z= -5/6
Add 1/3 to both sides
-1/3+2z+1/3 = -5/6+1/3
Simplify
2z=-1/2
Divide both sides by 2
2z/2 = -1/2/2
Simplify
z = -1/4
Answer:
30
Step-by-step explanation:
3/6 students are girls, 1/2 the students are girls.
So 15 + 15 = 30
Answer:
The slope is 9, and the y-intercept is –2
Step-by-step explanation:
y = 9x - 2
y = 9x + (-2)
This is in the form of y = mx + c ,where m is slope and c is y-intercept.
So, The slope is 9, and the y-intercept is –2.
In y-intercept, intercept means to cut. So,
y-intercept means where the equation cuts the y-axis. We know that in y-axis, the value of x is 0. So, we put x = 0 in the equation to find y-intercept.
y = 9x + (-2)
y = 9×0 - 2
y = -2
Hence, y-intercept is -2.