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PolarNik [594]
3 years ago
10

From the top of a 200 meters high building, the angle of depression to the bottom of a second building is 20 degrees. From the s

ame point, the angle of elevation to the top of the second building is 10 degrees. Calculate the height of the second building.
Mathematics
1 answer:
meriva3 years ago
4 0
If the top of a 200-m high building has a 20 degree angle of elevation from the bottom of another building, it makes sense that a 10 degree angle of elevation would equal 100m, making the height of the second building 300 m
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True or false when we carry out a chai square test of Independence the alternate hypothesis states that the two relevant classif
Anna35 [415]

Answer: False

Step-by-step explanation:

degrees of freedom=(r-1)(c-1)

I don't know if I'm exactly right

if not sorry

6 0
3 years ago
State the value of the discriminant of -6x^2 +2x + 3 = 0
Dmitry [639]

Answer:

76

Step-by-step explanation:

recall that for a quadratic equation in the form

ax² + bx + c = 0, the discriminant is given by

discriminant, D = b²- 4ac

we are given the following:

-6x² + 2x + 3 = 0,

comparing this with the general equation above, it is clear that,

a = -6, b = 2 and c = 3,

substituting these into our equation for discriminant:

D = b²- 4ac

= 2² - 4(-6)(3)

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= 76

4 0
3 years ago
An object is launched from a launching pad 208 ft. above the ground at a velocity of 192ft/sec. what is the maximum height reach
Alexeev081 [22]

Answer:

h(x) = -16x² + 192x + 208

784ft

6 sec

13 sec

Step-by-step explanation:

a)

h(x) = -16x² +vx + h_{o}

here v represent velocity

         h_{o} represent initial height of launch

       

h(x) = -16x² + 192x + 208

b)

h(x) = -16x² + 192x + 208

here a = -16

        b = 192

        c = 208

x = -b/2a

  = -192/2(-16)

  = 6

plug this value in the equation

h(x) = -16(6)² + 192(6) + 208

      = 784ft

e)

Plug h(x)=0 in the equation

0 = -16x² + 192x + 208

divide equation by -16

x² - 12x - 13 = 0

Factors

1x * -13x = -13

1x - 13x = -12

Factorised form

x² - 12x - 13 = 0

x² + x - 13x - 13 = 0

x(x+1) -13(x+1) = 0

(x+1)(x-13) = 0

x = -1

x = 13

Since time can not be negative so we will reject x = -1  

3 0
4 years ago
DUE MIDNIGHT PLEASE HELP <33
marishachu [46]

Answer: slope=3 Y=1

Step-by-step explanation:

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Step2: Y2-Y1 over X2-X1

5-2.       3

——- =  ——

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3 0
3 years ago
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What is the transformation of the graph from its parent function​
VLD [36.1K]

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The transformation is left 1 hope it is right

Step-by-step explanation:

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2 years ago
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