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3 years ago

Could you help with some geometry questions today!

Mathematics

1 answer:

Eva8 [605]3 years ago

6 0

Answer:

A) 29, B) 18, C) 12

Step-by-step explanation:

A) r = 29

Answered here: brainly.com/question/22226669

B) The tangents to a circle have same length:

LK = LM
4x - 2 = 3x + 3
4x - 3x = 2 + 3
x = 5

LM = 3*5 + 3 = 18

C) Use the intersecting secants theorem:

PQ*PQ = SQ*RQ
y² = (10 + 8)*8
y² = 144
y = 12

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Romashka-Z-Leto [24]

Answer: Wouldn't the answer be A?

Step-by-step explanation:

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3 years ago

What is the y-value for f(x) = cos(x) when x = 180°? -1 0 1/2 1

maksim [4K]

You start at 0 on the unit circle the cos of 0 =1, but at cos 0 there is no angle at all so there is no y value so at cos 0 y=0, 180 is the opposite direction of the starting point which is 0 so the x value of cos180= -1 but there is still no upward or downward angle ie.. y value. so the y value = 0 at 0 and 180. answer is 0

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3 years ago

The angle of elevation of the top of a tree is 60°. If the point of observation is 4m from the foot of the tree. How far is the

inn [45]

Answer:

Step-by-step explanation:

x = hypotenuse since they want the point of observation to the top of the tree

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7 0

4 years ago

For a certain commodity the supply equation is given by S = 2p + 5 At a price of $1, there is a demand for 19 units of the commo

slava [35]

Answer:

The demand equation is: D=-4p+23

Step-by-step explanation:

To get started, we should keep in mind that the market price (p=3) occurs when supply equals demand ,therefore when p=3

S=2(3)+5=11

Thus, when p=3 D=11 and, according to the problem when p=1 D=19.

We already know two points on the demand curve. Great!

The demand equation is linear, so it has form D=bp+c.

The variable b is the slope of the demand linear equation . It can be computed through the formula

$b=\frac{y2-y1}{x2-x1}$ . equation 1

Substituting the two points (3,11) and (1,19) on equation 1.

$b=\frac{19-11}{1-3} =\frac{8}{-2}$

b=-4

Now we can find the value of intercept of the demand equation c trough point-slope form y-y1=b(x-x1).

We can use any of the points. Let's take (3,11) and write in point-slope :

y-11=-4(x-3)

y=-4x+11+12

y=-4x+23

Rewrite the linear equation according our variables D and p

D=-4P+23

Finally we found the demand equation !

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4 years ago

Can u help with question 18

Anestetic [448]

AD is 17 using the Pythagorean Theron

6 0

4 years ago