Step-by-step explanation:
x^2+7x+8=0
d=b^2-4ac
=17
roots are=( -b+-rootD)/2a
( -7+root17)/2 , (-7-root17)/2
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Answer:
x = 19
Step-by-step explanation:
∠ YWX = ∠ ZYW = 2x ( alternate angles )
The sum of the 3 angles in Δ WXY = 180° , that is
3x - 5 + 2x + 90 = 180
5x + 85 = 180 ( subtract 85 from both sides )
5x = 95 ( divide both sides by 5 )
x = 19
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Answer:
1500 miles
Step-by-step explanation:
Given data
We are given that the ratio of the length of river Parana and Paraguay is
5:3
Parana is 2500 miles
Applying then part to part approach
let the length of Paraguay be x
5/3= 2500/x
cross multiply we have
5*x= 2500*3
5x= 7500
divide both sides by 5
x= 7500/5
x=1500 miles
Hence the lenght is 1500 miles
Answer:
Circumference is about 185.26 cm.
Area is about 2732.585
Step-by-step explanation:
Circumference = 2πr
2 x 3.14 x 29.5 = 185.26
Area of a circle = π
3.14 x 29.5 x 29.5 = 2732.585