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DiKsa [7]
3 years ago
6

The landscaper pours 200 gallons of herbicide in the pond. If the herbicide degrades 10% each week, how much will be in the pond

after 1 week passes?
Mathematics
1 answer:
777dan777 [17]3 years ago
5 0
I belive at 90% will be left

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Chris Johnson earns $34,850 annually as an engineer. She single on sports your father. The state tax rate in her state is 3% of
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Answer: 1,045.50

Step-by-step explanation: hope this helps champ.

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to estimate the height of the jin mao tower in shanghai , a tourist sights the top of the tower form a mirror that is 86.7 meter
Ray Of Light [21]

Answer:

The height of the tower = 420.48 meters

Step-by-step explanation:

For better understanding of the solution, see the figure attached below :

Let the height of the tower be x meters

Now, using the laws of reflection : angle of reflection = angle of incidence

Also, both the tower and the tourist are standing parallel to each other

⇒ ∠A = ∠i ( Alternate interior angles are equal)

Similarly, ∠D = ∠r ( Alternate interior angles)

But, ∠i = ∠r

⇒ ∠A = ∠D

Also, the tourist and the tower is perpendicular to the ground surface.

⇒ m∠B = m∠E = 90°

Now, in ΔABC and ΔDEC

∠A = ∠D (Proved above)

m∠B = m∠E = 90°

So, by AA postulate of similarity of triangles, ΔABC ~ ΔDEC

As the sides of similar triangles are proportional to each other

\frac{AB}{DE}=\frac{BC}{EC}\\\\\implies\frac{1.92}{x}=\frac{0.4}{87.6}\\\\\implies x=\frac{87.6\times 1.92}{0.4}\\\\\bf\implies x = 420.48\textbf{ meters}

Hence, The height of the tower = 420.48 meters

5 0
3 years ago
If f(x)= -2x^3 +14-8<br> if g(x)= 2x+6<br> find p(x) and g(x)<br> hurry upp please
Ierofanga [76]

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Step-by-step explanation:

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All the freshmen in STEM majors at the college will go on a field trip to the science museum. Counting all students and facultie
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One solution of the equation x2 + 5x + 4 is -4. What is the other solution?​
Oliga [24]

Answer:

<h2>x = -1</h2>

Step-by-step explanation:

x^2+5x+4=0\\\\x^2+x+4x+4=0\\\\x(x+1)+4(x+1)=0\\\\(x+1)(x+4)=0\iff x+1=0\ \vee\ x+4=0\\\\x=-1\ \vee\ x=-4

7 0
3 years ago
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