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NARA [144]
2 years ago
11

I will give extra points and be sure to explain please

Mathematics
1 answer:
salantis [7]2 years ago
6 0

Answer: 15

Step-by-step explanation: Label the tree with 4m for the height of the tree and the base of the triangle 15m for the shadow it cast. The angle is adjacent to 15m and opposite to 4m making the equation you use tanx=4/15 which when you solve becomes tan^-1(4/15) which gives you 15.

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Which graph represents a reflection of f(x) = 6(0.5)x across the x-axis?
Musya8 [376]
The required graph is attached.

7 0
2 years ago
Read 2 more answers
Many companies "grade on a bell curve" to compare the performance of their managers and professional workers. This forces the us
GarryVolchara [31]

Answer:

option A

Step-by-step explanation:

given,

10% A grades     80% B grades      10% C grades

This year, managers with scores less than 35 received C's and those with scores above 425 received A's.

The mean has to be middle of two corresponding cutoff value

              \mu = \dfrac{35+425}{2}

                      μ = 230

Cutoff Off C grade corresponds with the area of 0.10 is table A.

corresponding z- score according to Table A

           Z = -1.28

now, standard deviation

    z = \dfrac{x-\mu}{\sigma}

    \sigma= \dfrac{x-\mu}{z}

    \sigma= \dfrac{35-230}{-1.28}

       σ = 152.3

Correct answer is option A

4 0
3 years ago
There are 8 pencils in a package. How many packages will be needed for 28 children if each child gets 4 pencils?
Verizon [17]
28*4=112
112/8=14 Packages
8 0
3 years ago
AABC - ADEF <br><br> Find the value of x
kobusy [5.1K]

Answer:

\boxed{x = 4}

Step-by-step explanation:

If ΔABC ~ ΔDEF

Then their sides must be proportional such that:

=> \frac{x}{3} = \frac{8}{6}

Cross Multiplying

=> x * 6 = 8*3

=> 6x = 24

Dividing both sides by 6

=> x = 4

4 0
3 years ago
Read 2 more answers
Y=f(×)=9×<br> Find f(×) when x =1/2
mojhsa [17]
<h3>f(x) is equal to 4.5 when x = 1/2</h3>

<em><u>Solution:</u></em>

Given that,

y = f(x) = 9x

We have to find f(x) when x = 1/2

We can solve by substituting x = 1/2 in given function

f(x) = 9x\\\\Plug\ in\ x = \frac{1}{2}\\\\f(\frac{1}{2}) = 9 \times \frac{1}{2}\\\\f(\frac{1}{2}) = 4.5

Thus f(x) is equal to 4.5 when x = 1/2

8 0
3 years ago
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