Answer:
x=2,-8
Step-by-step explanation:
Answer:
21 (PLEASE GIVE BRAINLIEST)
Step-by-step explanation:
we have the base, but we need the height
we will find it using the area:
height = 336 / 16 = 21
She took a total of 60 minutes
she answered both mulitiple choice and extended response in the total time which is 60 minutes
she took 2 minutes on rach multiple choice question and 6 minutes for the extended response
let x=number of multiple choice questions
let y=number of extended response questions
we can deduce that
total time =x*2+y*6
60=2x+6y
also we can deduce
20=x+y
since 20 ia the sum of multiple choice and extended response
for part 2 we just solve the system of equations
60=2x+6y
20=x +y
lets multiply the second equation by 2 so we can get rid of x
60=2x+6y
40=2x+2y
subtracting the two equations from each other to yields
20=0 +4y
y=5
to get x we substitute in one of the equations we derived from question 1
x+y=20
substituting y for its value we get
x+5=20
x=15
This is a simple one.
We dont know how fast it is going downstream, but we do know it took 3 hours to reach the destination. Now, saying that, when coming back we know it took 4 hours(an hour longer than what we took to get there), and we also know we were moving 5 miles slower per hour. If we think a bit, we can see that moving 5 miles slower made us take a whole hour. Making me believe that when we were headed to our destination we were moving at 20 miles per hour, and when we were headed back, we moved at 15mph(20-5)
To check that this was correct, we can just simply check, "okay so from our point to our destination we traveled 60 miles in total. if we went 20 miles an hour, in 3 hours(3×20) we would be at our destination, and if we traveled at 15 miles an hour, it would take us 4 hours to get back to our starting point (4×15)
HOPE THIS HELPED. PLEASE CONSIDER LEAVING A <em><u>5</u></em><em><u> </u></em><em><u>STAR</u></em><em><u>,</u></em><em><u> </u></em><em><u>A</u></em><em><u> </u></em><em><u>HEART</u></em><em><u> </u></em><em><u>AND</u></em><em><u> </u></em><em><u>MAKING</u></em><em><u> </u></em><em><u>THIS</u></em><em><u> </u></em><em><u>THE</u></em><em><u> </u></em><em><u>BRAINLIEST</u></em><em><u> </u></em><em><u>ANSWER</u></em> THAT WOULD BE SO VERY MUCH APRECIATED!!!!
