<span>Let x be the speed of the first car, then (x + 10) is the speed of the second car.
We can write the equation by the condition of the problem:
</span>
mph s<span>peed of the first car
</span>
Then 30+10=40 mph speed of the second car
Answer: 30mph and 40 mph.
<span>I hope this helps.</span>
Answer:
its cos 50
Step-by-step explanation:
amen
Answer:
The greatest common factor of 15 and 31 is 1.
Step-by-step explanation:
What are the factors of 15?
1, 15 and 3, 5
What are the factors of 31?
31 and 1
We can see that 31 and 15 only share on common factor, which is 1.
1 is the greatest and the only factor!
Answer: 2 hours
Step-by-step explanation:
We can solve this system of equations using substitution.
2y + 2x = 8
Solve for x.
2x = -2y + 8
Divide all terms by 2.
x = -y + 4
Take the equation x = -y + 4 and substitute it into the second system of equation.
2y - 4x = 2
2y - 4(-y + 4) = 2
Simplify by distributing.
2y + 4y - 16 = 2
Combine like terms.
6y - 16 = 2
6y = 18
y = 3
Now that you know the numerical value of y, substitute y with 3 in both equations to find x.
1) 2y + 2x = 8
2(3) + 2x = 8
6 + 2x = 8
2x = 2
x = 1
2) 2y - 4x = 2
2(3) - 4x = 2
6 - 4x = 2
-4x = -4
x = 1
The value of x is 1, and the value of y is 3.
Solution: B) (1, 3)
