Answer:
Per2 = 102.727 dm
Per1 = 123.272 dm
Step-by-step explanation:
We know that the area of similar triangles are related to the square of their perimeters.
This means that
(Per1^2)/(Per2^2) = Area1 / Area2
If we take the square root of the previous equation
(Per1)/(Per2) = 
(Per1)/(Per2) = 
(Per1)/(Per2) = 1.2
We also know that
Per1 + Per2 = 226 dm
So,
1.2*Per2 + Per2 = 226 dm
2.2*Per2 = 226 dm
Per2 = 102.727 dm
Per1 = 1.2*Per2 = 123.272 dm
Answer:
4/5 + 3/4 =
or 1.55
Step-by-step explanation:
This can be solved by first finding the highest common factors of denominators of the two fractions, i.e. 4 and 5.
The highest common factor of 4 and 5 can be found by multiplying the two numbers as follows:
The highest common factor of 4 and 5 = 4 * 5 = 20
This can now be used to solve 4/5 + 3/4 as follows:
4/5 + 3/4 = ((4 * 4) + (5 * 3)) / 20 = (16 + 15) / 20 = 31 / 20 =
or 1.55
Therefore, we have:
4/5 + 3/4 =
or 1.55
She can bake 48 muffins in 90 minutes. Since she can bake 24 in 45 min, 90 min is double that, so double the original amount of cupcakes. 24x2=48
Answer:
a. -44
b. 32
Step-by-step explanation:
i need more characters so imma show work
((4-10+3(2-3))+2)6-2
((-9)+2)6-2
-42-2
-44
(9+3(2)) + ((6+2(-2))+7)
(9+6)+((10)+7)
15+17
32
4 minutes
Set up 2 equations and solve
let b represent time taken to ride around block and
let n represent time taken to ride around neighbourhood, then
10b + n = 24 → (1)
5b + 2n = 18 → (2)
multiply (1) by - 2
- 20b - 2n = - 48 → (3)
add (2) and (3) term by term to eliminate n
- 15b = - 30 ( divide both sides by - 15 )
b = 2
substitute b = 2 into (1) and solve for n
20 + n = 24 ( subtract 20 from both sides )
n = 4
Thus it takes 4 minutes to ride around the neighbourhood