Answer:
she biked 3.4 miles, 5984 yards
Step-by-step explanation:
Using the process of elimination, we will be able to determine the answer. So, 5x+3y=-10 multiply it by *3 to change the equation into 15x+9y=-30. Then to change 3x+5y=-6 multiply it by *5, to change it into 15x+25y=-30. So now with these two equations 15x+9y=-30 and 15x+25y=-30, use subtraction to get rid of the variable x.
Thus,
15x+9y=-30
-
15x+25y=-30
which will leave you with
-16y=0
thus, y=0
Then, plug y back into the original equation to find x
5x+3(0)=-10
5x=-10
x=-2
Thus the point of intersection is (-2,0)
-2 being the x, and y being 0.
Answer:
D
Step-by-step explanation:
D is the only answer choice where the terms in the polynomials are descending in power, or their exponents. The powers are 7, 5, 4, 3, 0. The other answer choices have powers that aren't in descending order.
Answer:
3.33
Step-by-step explanation:
To solve for x you must divide both sides of the equation by 18. This is the DPE. Then the two 18s cancel each other out leaving u with x. Then divide 60 by 18 which then equals to 3.33. This Then gives the answer x=3.33.