Answer:
0.12
Step-by-step explanation:
Due to 3 not being higher or equal to 5, you wouldn't round the 2 here up. Hundredths are 2 decimal places.
Answer:
Step-by-step explanation:
mid point = [(a1 + a2)/2 , (b1 + b2)]
(a1,b1) = first point
(a2,b2) = end point
Using all x coordinates
(a1 + a2)/2 = 1
(-1 + a2)/2 = 1
-1 + a2 = 2
a2 = 3
Using all y coordinates
(b1 + b2)/2 = -1
(-3 + b2)/2 = -1
-3 + b2 = -2
b2 = -1
thus end coordinate = (3, -1)
Answer:
<h2><u><em>
207.35</em></u></h2>
Step-by-step explanation:
Answer:
120
240
Step-by-step explanation:
We call the length of first part x
Length of second part = y
In the first scenario, it took the tortoise 110 sec to walk the first part and crawl the second.
So,
We have this equation,
x/4 + y/3 = 110
We take the LCM
(3x + 4y)/12 = 110
When we cross multiply
3x + 4y = 110x12
3x + 4y = 1320 ----- equation 1
For scenario 2
x/3 + y/4 = 100
When we take the LCM
(4x + 3y)/12 = 100
We cross multiply
4x + 3y = 100x12
4x + 3y = 1200 ------ equation 2
We now have two equations and we will solve for x and y using simultaneous linear equation.
3x + 4y = 1320 ----- 1
4x + 3y = 1200 ----- 2
We subtract equation 2 from 1 to get
- x + y = 120
We make y subject
y = x + 120 ----- 3
We put the value of y in equation 3 into equation 1
3x + 4(x + 120) = 1320
3x + 4x + 480 = 1320
7x + 480 = 1320
7x = 1320-480
7x = 840
We divide through by 7
x = 840/7
x = 120
We put value of x in equation 3
y = x + 120
y = 120 + 120
y = 240
120 and 240 are the lengths of the 2 parts of the journey.
Thanks