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3 years ago

9

10 is 20% of, please answer

1 answer:

DanielleElmas [232]3 years ago

7 0

Answer:

50

Step-by-step explanation:

20% is the same as 0.2 times something.

So you can create the equation 0.2x = 10. The solution of this equation is x=50.

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The average rate of change of f(x) is given by the formula f(7) - f (3) 4. Over what interval does this formula give the average

blagie [28]

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2 years ago

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John stands 150 meters from a water tower and sights the top at an angle of elevation of 36º. If John's eyes are 2 meters above

horsena [70]

Answer:

The height of tower $DB=111\ meters$ .

Step-by-step explanation:

Diagram of the given scenario is shown below.

Given that,

Distance between John and tower is $CE=150 \ meters$ .

Angle of elevation to the top of the tower is $\angle DEC=36$ °.

Height of John is $CB=2\ meters$ .

To Find: Height of the tower $DB$ .

So,

In triangle ΔDCE,

$Tan$ (∠ $DEC)= \frac{DC}{CE}$

$Tan (36)= \frac{DC}{150}$

$DC= tan(36)\times 150$

$DC=108.98\ meters$

Now,

To calculate the height of tower we have

$DB=DC+CB$

$DB=108.98+2$

$DB=110.98\ meters$ ≈ $111 \ meters$

Therefore,

The height of tower $DB=111\ meters$ .

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3 years ago

What is equivalent to -x/y

Blizzard [7]

14, because the percentage of -x to y is not equivalent so when u divide it, u get 14.

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3 years ago

(5,1) (3,2) Write the equation in point-slope form

SCORPION-xisa [38]

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Step-by-step explanation:

$\frac{2-1}{3-5}$

-1/2 slope

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y-1=-1/2(x-5)

y-1=-1/2x +5/2

y=-1/2x+7/2

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3 years ago