Answer: the expression for the combined total number of miles she biked in the two days is
117 - 5x miles
Step-by-step explanation:
Let x be the number of hours she biked yesterday.
In the two days, she biked for a combined total time of 9 hours. This means that the number of hours that she biked today is (9 - x) hours.
Distance = speed × time
Yesterday, Carmen went on a bike ride. Her average speed was 8 miles per hour. This means that the distance that she covered yesterday is 8x miles
Today, she went on another ride, this time averaging 13 miles per hour. This means that the distance that she covered today is 13(9 -x) miles.
An expression for the combined total number of miles she biked in the two days is
8x + 13(9 - x)
= 8x + 117 - 13x
= 117 - 5x
Answer:
$28.5
Step-by-step explanation:
25% of 38 is 9.5. You subtract 9.5 from 38 to get 28.5.
Answer: 5
Step by step: a=2 and b=3 so it’s 2+3 which equals 5
Answer:
Option (1).
Step-by-step explanation:
Given question is incomplete: find the complete question in the attachment.
From the given figure, coordinates of the points A and B are (0, 2) and (2, 0) respectively.
Slope of line AB = 
When these points are dilated by a scale factor = 2, about the origin
Rule for the dilation → (x, y) → (kx, ky)
Where k = scale factor
Coordinates of the points A' and B' will be (0, 4) and (4, 0)
Slope of the line A'B' =
Since 
, both the lines AB and A'B' will be parallel.
Therefore, option (1) will be the answer.
Answer:
x=-7/9, y=4/3. (-7/9, 4/3).
Step-by-step explanation:
6x+2y=-2
3x-2y=-5
-----------------
9x=-7
x=-7/9
6(-7/9)+2y=-2
-42/9+2y=-2
2y=-2-(-42/9)
2y=-2+42/9
2y=-18/9+42/9
2y=24/9
y=(24/9)/2
y=(24/9)(1/2)
y=24/18
y=4/3
