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liubo4ka [24]
3 years ago
14

2x^2-19x+9=0 quadratic formula or zero product property. Which ever is easier?

Mathematics
1 answer:
slavikrds [6]3 years ago
8 0

Answer:

9

Step-by-step explanation:

x=9

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Point B is a point of tangency. Find the radius r of OC.
Bumek [7]

Answer:

r = 16 units

Step-by-step explanation:

From the figure attached,

AB is the tangent drawn from a point A to the circle C.

BC = r [Radius of the circle]

Length of AC = (18 + r)

AB = 30

By the property of a tangent drawn to a circle,

"Radius of a circle and tangent are perpendicular to each other"

AB ⊥ BC

By applying Pythagoras theorem in ΔABC,

AB² + BC² = AC²

(30)² + r² = (r + 18)²

900 + r² = r² + 36r + 324

36r = 900 - 324

r = \frac{576}{36}

r = 16 units

6 0
2 years ago
Can someone please help me with this one question
erastova [34]

the problem with this study is the fact that they used precise numbers

hope i helped:)

7 0
3 years ago
Write the equation of the line that passes through the points (0,-5) and (4,3)
Anettt [7]

Answer:

Step-by-step explanation:

Gradient = y2-y1 all over x2-x1

G = 3-(-5) all over 4-0

Therefore your answer = 1/2

6 0
2 years ago
A construction company is planning to pour concrete for a driveway. The length of the driveway is 16 feet longer that its width
Inga [223]
L (length) = w+16
l x w = Area
260 = l x w
260 = (w+16) x w
260 = w^2 + 16w
w^2 + 16w -260 = 0
(w+26) (w-10) = 0

w= -26 (reject) or w = 10

if w = 10, l = 26
10ft x 16 ft
3 0
3 years ago
S'il vous plaît aider moi pour ce problème c'est pour demain. Merci.
Vedmedyk [2.9K]
Je ne parle le Français très bonne, mais je te vais aider. Le total est 40kg et la valise pèse 20kg donc 40-20=20. La réponse est 20kg.
3 0
3 years ago
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