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horrorfan [7]
3 years ago
7

How do I solve for h

Mathematics
1 answer:
WITCHER [35]3 years ago
8 0
All the triangles are similar, so the ratio of (long leg)/(short leg) is the same. The long leg of ΔADB is
.. AD = AC -DC = 20 -4
.. AD = 16

Then
.. (long leg)/(short leg) = AD/DB = BD/DC
.. 16/h = h/4
.. h^2 = 64
.. h = 8

Selection D is appropriate.

_____
You may see this again. The altitude (h) from the right angle in a right triangle is the geometric mean of segments AD and DC. That is,
.. h = √((AD)*(DC))
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Number ten please thanks
BlackZzzverrR [31]
-3^2= -(3)^2

The exponent of 2 only applies to the number 3. -(3)^2 should equal -9. This is true because according to the order of operations, exponents should be evaluated before multiplication. The negative sign here represents -1* 3^2.
If you want to find -3 to the power of 2 it must be written (-3)^2.
5 0
3 years ago
Need help plssssss fast hurry plsss
Bond [772]

Answer:

50 ft2

Step-by-step explanation:

im not sure if this is right but this is what i got when i worked it out

5 0
3 years ago
Read 2 more answers
The population of deer forest is currently 800 individuals. Scientists predict that this population will grow at a rate of 20 pe
jonny [76]

Answer:

<em>C. 3.8 years</em>

Step-by-step explanation:

<u>Exponential Growth </u>

The natural growth of some magnitudes can be modeled by the equation:

P(t)=P_o(1+r)^t

Where P is the actual amount of the magnitude, Po is its initial amount, r is the growth rate and t is the time.

The actual population of deer in a forest is Po=800 individuals. It's been predicted the population will grow at a rate of 20% per year (r=0.2).

We have enough information to write the exponential model:

P(t)=800(1+0.2)^t

P(t)=800(1.2)^t

It's required to find the number of years required for the population of deers to double, that is, P = 2*Po = 1600. We need to solve for t:

800(1.2)^t=1600

Dividing by 800:

(1.2)^t=1600/800=2

Taking logarithms:

t\log 1.2=\log 2

Dividing by log 1.2:

t=\frac{\log 2}{ \log 1.2}

Calculating:

t = 3.8 years

Answer: C. 3.8 years

6 0
3 years ago
−3x(−4x+x)−x(−x−2x)−4x(4x+3x)
777dan777 [17]

Answer:

- 3x( - 4x + x) - x( - x - 2x) - 4x(4x + 3x) \\  \\    = 12 {x}^{2}  - 3 {x}^{2}  +  {x}^{2}  + 2 {x}^{2}  - 16 {x}^{2}  - 12 {x}^{2}  \\  \\  =  - 16{x}^{2}

7 0
2 years ago
Which product of prime polynomial a is equivalent to 8x^4+36x^3-72x^2
Tatiana [17]
Answer :

B. 4x²(2x-3)(x+6)


4x²(2x-3)(x+6)
4x²(2x²+12x-3x-18)
4x²(2x²+9x-18)
8x⁴+36x³-72x²

5 0
3 years ago
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