Erika’s toy ski chalet is valued at €450. Its value increases by 10% then decreases by 10% the year after. What is the value of Erika’s toy after these two changes?

€445.5

Step-by-step explanation:

First we calculate the increase percentage and the increase.

Increase = 450 + (10%*450)

Now we must calculate the percentage of the increase.

Increase percentage = 10% of €450 = 450*0.1 = 45

Increase = 450 + 45 = €495

Since the decrease happens to the new number, the decrease and the decrease percentage both must be to the new changed number, which is 495

Decrease = 495 - (10%*495)

Again we must calculate the percentage of the decrease.

Decrease percentage = 10%*495 = 0.1*495 = 49.5

Decrease = 495 - 49.5 = 445.5

So, the value of Erika's ski chalet after the two changes = €445.5

10a^3+277a^2-132a-792

step-by-step explanation:

(2a+11)(5a-12)(foil)

=10a^2-24a+55a-132 =10a^2+31a-132

(10a^2+31a-132)(a+6)

=10a^3+60a^2+31a^2+186a^2-132a-792 =10a^3+277a^2-132a-792

i hope this is what you are looking for : )

answer: howdy

step-by-step explanation: