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Sauron [17]
3 years ago
13

you are standing 10 feet away from a tree.the angle of elevation is 35 degrees .how tall is the tree?

Mathematics
1 answer:
marshall27 [118]3 years ago
3 0
Tan(theta)= opposite/ adjacent

tan(35) = opp / 10ft

opp=10 * tan(35)

opp= 7.002 ft tall

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14. 2^2+ + 5x = 5x + 50
postnew [5]

Answer:

<h3>           x = -5   ∨   x = 5    </h3>

Step-by-step explanation:

\bold{2x^2 + 5x= 5x +50}\\\\{}\ \ -5x\qquad -5x\\\\\bold{2x^2\ =\ 50}\\\\\div2\quad\ \ \div2\\\\\bold{x^2=25}\\\\\bold{x=5\quad\vee\quad x=-5}

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3 years ago
#16. Do the ordered pairs (-5,19), (-1,7),(3,-5),(6,-14), and (9,-23) represent a linear function? How do you know?
mina [271]
The ordered pairs are represented as a linear function. since there is one value of y for every value of x. as to more understanding, all of the y-values are different than the x values which considers this as a function.

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3 years ago
How long does it take to travel 240 km at a constant speed of 12 km/h?
tankabanditka [31]

Answer:

It will take 12 hours

Step-by-step explanation:

Distance equals rate times time

d = rt

We know the distance and the rate

240 = 12 * t

Divide each side by 12

240/12 = 12t/12

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5 0
4 years ago
Question 28 of 42
lina2011 [118]

Answer with explanation:

Properties of Rectangle

1. Opposite sides are equal and parallel.

2. Diagonals are equal and bisect each other.

3. Adjacent Sides are Perpendicular to each other.

→If two lines are parallel their slopes are equal and if two Lines are perpendicular, their product of slopes is -1.

→A Rectangle is a Quadrilateral also.

→Adjacent sides are perpendicular ,so , their slopes can't be equal.Product of their slopes should be equal to ,-1.

⇒Slope of AB × Slope of BC = -1

⇒Also, Slope of AB × Slope of BC = -1

Slope of AB × Slope of AD = -1

⇒ Slope of AD × Slope of CD = -1

Slope of CB × Slope of CD = -1

Option B And Option C

are statement which proves that polygon ABCD is not a rectangle.

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3 years ago
Lavania is studying the growth of a population of fruit flies in her laboratory. After 6 days she had nine more than five times
MatroZZZ [7]

Answer:

Lavania observed 39 fruit flies after 6 days of observation

Step-by-step explanation:

Let x be the number of fruit flies on the first day of Lavania's study.

After 6 days she had nine more than five times as many fruit flies as when she began the study.

Five times as many fruit flies as when she began the study = 5x

Nine more than five times as many fruit flies as when she began the study=5x+9

The expression to find the population of fruit flies Lavania observed after 6 days is 5x+9

If she observes 20 fruit flies on the first day of the study, then x=6, then

5x+9=5\cdot 6+9=30+9=39

5 0
3 years ago
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