Answer:
5
Step-by-step explanation:
14+6= 20 this means 4y must equal 20.
20 divided by 4 is 5
y=5
Answer:
it looks like a parallelogram
so,
23*15=345
Answer:
200
Step-by-step explanation:
Let x and 2x be the number of red tiles and blue tiles respectively.
x + 2x = 600
3x = 600
=> x = 200
No. of red tiles = 200
No. of blue tiles = 2(200) = 400
(not sure )
my method
let projection of b onto line dq be M
BM is 2r
then let the remaining angle ( right) be K
in triangle BMK ,
MK = 29-5-r
By Pyth. theorem ,
23^2 = (2r)^2+(29-5-r)^2
529=4r^2+576-48r+r^2
5r^2-48r+47=0
r = 8.493237063 or 1.106762937(rejected)
To estimate a square root, find the two perfect squares the number is closest to, then continue with further decimals, i.e. if the question is square root of 5, it is between 4 and 9. As such, the answer is between 2 and 3. Alternatively, use a calculator for a quick estimation of many decimal points.
