If the first 10 bricks come out at $ 4.5, I would be spending $ 45. The other 10 bricks come out at $ 3.5 so he would be spending $ 35. Therefore, he has $ 20 available to buy bricks at $ 2.5, which would be buying 8 additional bricks. Thus, in total, with $ 100, 28 bricks were purchased.
Answer:
Lydia's address is Cypress Street is: 51823
Step-by-step explanation:
Represent the digit as ABCDE such that:
A = Ones
B = Tens
C = Hundred
D = Thousand
E = Ten Thousand
Analyzing the statements one after the other:
The tens digit is 6 less than 7.


The thousands digit is twice the digit in the tens place.



The hundreds digit is the greatest even number that is less than 10.

The ones digit is the product of 5 and 1.


The ten thousands digit is the difference between the hundreds digit and the ones digit.



Lydia's address is Cypress Street is: 51823
Answer:
Infinity
Step-by-step explanation:
Since x,y,z are positive rel numbers, we have that

Hence,

Now let

if we take x=y=1, we have

and so f(1,1,z) tends to infinity as z goes to 0.
Answer:
27 : 1
Step-by-step explanation:
The prisms will be similar meaning the lengths of the sides of one will be 3 times larger. But when the volume is found it will be 3*3*3 = 27 times bigger. Take the example 2 * 4 * 3 = 24.
After a scale factor it will be 6 * 12 * 9 = 648
And 24*27 is 648.
The volume ratio 648 : 24 will simplify as 27:1.
Answer:
The third option x2 + 2x- 4
Step-by-step explanation:
Total distance = flat road + downhill + uphill
x + (x^2 + 3) + (x -7) = x + x^2 + 3 + x - 7 = x^2 + 2x - 4
Hope that helps!