To decrease an amount or a number by 18%, multiply by (100%-18%)= 82% or multiply with 0.82
Given:
To find:
The values of a and b.
Solution:
We have,
It can be written as
Add and subtract square of half of coefficient of x in the parenthesis.
![[\because (x+y)^2=x^2+2xy+y^2]](https://tex.z-dn.net/?f=%5B%5Cbecause%20%28x%2By%29%5E2%3Dx%5E2%2B2xy%2By%5E2%5D)
On comparing both sides, we get
Therefore, the value of a is 1 and the value of b is -8.
Answer:
35 degrees.
Step-by-step explanation:
In order to find an angle in a triangle we need to know the other two angles, because the angles in a triangle all add up to 180 degrees. So, knowing two will get us the other one. In this case, we know two angles. One of them is 55, and the other, since it is a right triangle, is 90. So the two angles we know are 55 and 90. Using that all angles in a triangle add up to 180, we can use
55 + 90 + x = 180
145 + x = 180
x = 35
Answer:
4^2
Step-by-step explanation:
4^4 times 4^3 is equal to 4^7 since you just add the exponents. Then, when dividing, you subtract the exponents, so 4^7/4^5 is 4^2. I hope this is helpful!
Answer:1st one 2nd one and 8th
Step-by-step explanation:
