Answer:
Triangle M'L'Q' was dilated by a scale factor of 3
Step-by-step explanation:
Well, 4 times 3 is 12 and 7 times 3 is 21, so that means the new triangle was dilated by a scale factor of 3.
Answer:
(a-c)/b = x
Step-by-step explanation:
a = bx + c
subtract 'c' from each side to get:
(a-c) = bx
divide each side by 'b' to get:
(a-c)/b = x
Answer:
see below
Step-by-step explanation:
4x-7=13
Add 7 to each side
4x-7+7 = 13+7
4x=20
Divide each side by 4
4x/4 = 20/4
x = 5
The speed at which the distance is covered by the two vehicles is the sum of their speeds:
... (truck speed) + 1.5×(truck speed) = 2.5×(truck speed)
The time required to cover the distance is inversely proportional to speed, so is
... (2.5 hours)/2.5 = 1.0 hours
It takes 1.0 hours for the vehicles to meet.
_____
The speed of the truck is (145 mi)/(2.5 h) = 58 mi/h
The speed of the car is 1.5 × 58 mi/h = 87 mi/h.
The speed at which they move toward each other is
... 58 mi/h + 87 mi/h = 145 mi/h
So, the time it takes to cover 145 miles is
... (145 mi)/(145 mi/h) = 1.0 h
Pemdas
parenthasees
(3/4-1/2)=(3/4-2/4)=1/4
5/4+4(1/4)^2
exponents
(1/4)^2=1/16
multiply
4(1/16)=4/16=1/4
we have
5/4+1/4=6/4=3/2=1 and 1/2