Answer:
It will take him <u>0.5</u> (30 minutes) less hours if he bicycles at a speed that is 3km/h faster.
Step-by-step explanation:
18 km/h x 210 minutes = 3,780
3,780/21km = 180 minutes = 3 hours
If we multiply the speed by the time we can find the distance, using that we can find the time it takes to travel the same distance with more speed (21km/s this time).
<u>Therefore, it will take 30 minutes less if he travels 2 km/s faster or 0.5 less hours</u>
I hope this helps!
Answer:
90 degrees
Step-by-step explanation:
A corner of a A4 size paper forms the angle of 90°. Every corner of a A4 size paper forms the angle of 90°.
A and b have the greatest common factor 4, so suppose a=4x, b=4y
the least common multiple of 4x and 4y is 4xy, and 4xy=48, so xy=12
ab=4x*4y=16xy=16*12=192
(the integers are either 4 and 48 or 12 and 16, but that's not what is being asked here.)
First open the bracket by multiplying with -2
-2x - 26 +9x = 4
Solving like terms
7x - 26 = 4
Adding 26 to both sides
7x - 26 +26 = 4+26
7x = 30
X = 30/7
Point slope means
y-y1=m(x-x1)
where the slope is m and a point on the graph is (x1,y1)
we are given
slope=-3
therefor
y-y1=-3(x-x1)
eliminate choices A and D
they gave us point (5,-7)
x1=5
y1=-7
y-(-7)=-3(x-5)
y+7=-3(x-5)
C is answer
