Speed = distance / time
speed = 170/2.5
speed = 68 km per hr
Answer:

Step-by-step explanation:

Base area= length ×width
Let's convert all the mixed numbers into improper fraction for easier calculation.
Width
= 7½



Height
= 1¼


Volume of prism



Answer:
(3x-2y=-2)×3
(4x-3y=-4)×2
then minus
x=2
then for y take one equation
3x-2y=-2
6-2y=-2
y=4
8 - 15 means subtract the positive number 15 from 8.
8 - 15 = 8 + (-15) = -7
8 - (-15) means subtract the negative number -15 from 8.
Subtracting a negative number is the same as adding a positive number.
8 - (-15) = 8 + 15 = 23
8 - 15 = -7, and 8 - (-15) = 23. The expressions mean different operations and have different answers.
Answer:
Step-by-step explanation:
The degree is 4 because it is the largest exponent.