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Zina [86]
2 years ago
6

Number 7? No idea how to do this?

Mathematics
1 answer:
LenKa [72]2 years ago
6 0

Its looks like there is no question here.  Find x maybe?

the shaded part is a right triangle so we can use Pythagorean theorem

c² = a² + b²

c is the longest side of the or hypotenuse

so I can write it as m² + m² = 9²

m² + m² = 81

2m² = 81

/2          /2  

m² = 40.5

√       √  

m = √40.5 (well its actually = or - but since it really measurement its +)

~ 6.39

since x is to ms its 2 x 6.39

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3 years ago
Suppose f(x)=2×+5 find the value of -2f(x+1)
loris [4]
F(x) = 2x + 5 

-----------------------------------
Find f(x + 1) :
-----------------------------------
f(x +1) = 2(x + 1) + 5
f(x +1) = 2x + 2 + 5
f(x + 1) = 2x + 5

-----------------------------------
Find -2f(x+1):
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----------------------------------------------------------------------
Answer: -2(fx+1) = -4x - 10
----------------------------------------------------------------------
3 0
3 years ago
Hurry please find the values of x and y
MrRissso [65]
Answer:
Y=70
X= 20
You do first the adjacent angles 180-40 so 140 then u have that the triangle is isosceles so the bas angles are equal 180 -140 = 40
40 divided by 2 20 and 20 so x= 20
Then 90 -20 is 70
So 180 - (70+40)
180-110=70 so y= 70
Hope you understand
8 0
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