I hope this helps you
3)
(x+6)(x-2)=13.5
x=75
2)
shorter leg=a
longer leg=a+7
hypothenus =2a+1
(2a+1)^2=a^2+(a+7)^2
4a^2+4a+1=a^2+a^2+14a+49
2a^2-10a-48=0
a^2-5a-24=0
a +3
a -8
(a+3)(a-8)=0
a=8
a+7=15
2a+1=17
Answer:
Step-by-step explanation:
Note that √2x = √2*√x, and so we have √2*√x + 13 = √x + 31.
First subtract 13 from both sides, obtaining: √2*√x = √x + 18.
Next, group the √x terms together: √2*√x - √x = 18.
Now solve this for √x. We get:
√x(√2 - 1) = 18, or
18
√x = --------------
(√2 - 1)
To find x, square both sides:
18^2
x = ---------------
(√2 - 1)^2
Answer:
3
Step-by-step explanation:
9 cookies diviede by 3 friends
9/3=3
K can be 10,11,14,25
Work
(2x+4)(X+3)
(2x+3(X+4)
(2x+6)(X+2)
(2x+2)(X+6)
(2x+1)(X+12)
(2x+12)(X+1)
There's no way to begin until we know the value of ' i ' .
If ' i ' doesn't represent √-1 , then we can stop here
and discard the question as unanswerable.
If ' i ' is the famous √-1 , then here's how i⁵⁰ can be simplified:
Notice the following:
-- The 1st power of i is √-1 .
-- The 2nd power of i is (√-1)² = -1
-- The 3rd power of i is -√-1
-- The 4th power of i is (-√-1)·(√-1) = -(-1) = 1 .
-- Every 4 powers of ' i ' brings you back to ' 1 '.
So from the exponent of 50, you can knock out
the largest possible multiple of 4 , and evaluate
what's left.
50 = 48 + 2
i⁵⁰ = i² = -1 .