Answer:
62 miles per hour/62 mph
Step-by-step explanation:
Shania drives at a CONSTANT rate, which means in the 5 hours it took her to drive, each hour she drove the same amount.
So we need to do 310 miles in 5 hours, which is:
310/5
Solving this, we get:
62
The answer is 62 miles per hour.
Happy learning!
Finding x:
If y=2x+9, substitute y into the equation x-3y=-12.
You will get: x-3(2x+9)=-12
Now, distribute: x-6x-27=-12
Add like terms: -5x-27=-12
Add 27 to both sides: -5x=15
Divide both sides by -5: x=-3
Now, substitute this value of x into the equation to find y: y=2(-3)+9
Multiply: y=-6+9
Add: y=3
Here is the solution: (x,y)=(-3,3)
Hope this explanation helped!
Answer:
3+log2(7/9)
Explanation:
Answer:
2.2 * 10 ^7
Step-by-step explanation:
3.4 * 10 ^7 - 1.2 * 10 ^7
Since the exponent is the same we subtract the numbers out front
3.4-1.2 = 2.2
Put back the power
2.2 * 10 ^7
This is still in scientific notation
