3(a + b) and 3a + b - NOT EQUIVALENT because
3(a + b) = 3a + 3b
<em>used distributive property a(b + c) = ab + ac</em>
4(x + 2y) and 8y + 4x - EQUIVALENT because
4(x + 2y) = (4)(x) + (4)(2y) = 4x + 8y = 8y + 4x
<em>used distributive property a(b + c) = ab + ac</em>
<em>and commutative property a + b = b + a</em>
Answer:
h = 81
Step-by-step explanation:
19 = h/3 - 8
collect like terms
19 + 8 = h/3
27 = h/3
h = 27 x 3
h = 81
Answer:
radius-29.0113 in
diameter-58.0226 in
area-2,644.14 in squared
Step-by-step explanation:
I am sorry if it's wrong, but i am 99% sure it is.
Let x and y represent the hourly rates of the first and second mechanics, respectively.
.. x + y = 205 . . . . . . . the sum of the two rates was $205 per hour
.. 5x +15y = 1925 . . . . they charged a total of $1925
Divide the second equation by 5, then subtract the first equation.
.. x +3y = 385
.. (x +3y) -(x +y) = (385) -(205)
.. 2y = 180
.. y = 90
.. x = 205 -y = 115
The first mechanic charged $115 per hour; the second charged $90 per hour.
Answer:
Step-by-step explanation:
For every hour said student would've ran 3.5 km/hr
<h3>7/2</h3><h2>=3.5 kilometers per hour or 3 1/2 kilometers per hour</h2>
