Convert the first to an equation:
6(x+15)=-42
6x+90=-42
6x=132
x=22
Same for second equation:
4(x-7)=12
4x-28=12
4x=40
x=10
The solutions are x=22 and x=10
I hope I helped you with your solution! If you could give me brainliest, I would be very thankful!
Answer:
y+4 = 2(x+3)
Step-by-step explanation:
We have 2 points so we can find the slope
m = (y2-y1)/ (x2-x1)
= (2--4)/(0--3)
= (2+4)/(0+3)
= 6/3
= 2
We want to use the point slope form of the equation for a line
y-y1 = m(x-x1)
We know the slope =2 and the point (0,2)
y-2 = 2(x-0)
y-2 = 2x
We could also use the other point (-3,-4)
y--4 = 2(x--3)
y+4 = 2(x+3)
Answer:
1cm: 20km
Step-by-step explanation:
Answer:
D: 29,000
Step-by-step explanation:
Add all the numbers up then divide them by the amount of numbers there are.
Answer:
y = 2x - 4; Alex is 18.
Step-by-step explanation:
Since Alex is 4 years younger than 2 times his sister's age, and his sister is y and Alex is x, the function of y to x must be y = 2x - 4.
According to the rule, if Alex's sister is 11, Alex is 2 times that minus four. If you calculate that, you get
11 * 2 = 22
22 - 4 = 18
So Alex is 18 if his sister is 11.
