Group up the like terms and combine them
2x^2 and -7x^2 add up to -5x^2
6x and 2x add up to 8x
1 and -3 add up to -2
We end up with -5x^2 + 8x - 2
<h3>Answer: Choice B</h3>
Answer:
1 hour and 45 minutes
and 1 hour
Step-by-step explanation:
x= run
y= walk
5x+2.5y = distance
5x+2.5(1.5)=12.5
solve for x
5x=8.75
x=1.75
1.75 in hours is 1 hour and (60*.75)=45
1 hour and 45 minutes
" If the marathon race participant ran for 2 hours, how many hours did the participant walk?"
We use the same equation
5x+2.5y=distance
we'll assume that they till walked 12.5 miles
which means that
5(2)+2.5y=12.5
solve for y
2.5=2.5y
y=1
1 hour
After plotting the data, we get a linear line and the right region represents the solution to the inequality.
<h3>What is inequality?</h3>
It is defined as the expression in mathematics in which both sides are not equal they have mathematical signs either less than or greater than, known as inequality.
We have an inequality:
x - 2y > -6
As we can see in the inequality, there is a greater than sign, which shows at the boundary there will be a dotted line.
The x-intercept will be at x = -6
The y-intercept will be at y = 3
Thus, after plotting the data, we get a linear line and the right region represents the solution to the inequality.
Learn more about the inequality here:
brainly.com/question/19491153
#SPJ1
Answer:False, true, true, false
Step-by-step explanation:
The first one is false because 2 & 5 equal 180 together. B is true because they equal the same thing. C is true because they equal 180 together. And D is false because those don’t equal 180.
(x-h)^2 + (y-k)^2 = r^2
Where h,k is the center and r is the radius.
(x - -7)^2 + (y - -6)^2 = 2^2
(x+7)^2 + (y+6)^2 = 4
Letter A