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3 years ago

8

After 15 hours of burning a candle has a height of 25 cm after 29 hours of burning its height is 22.2 CM what is the height of t

he candle after 20 hours?

1 answer:

marin [14]3 years ago

5 0

Answer:24 cm

Step-by-step explanation:

every 14 hours 2.8 cm gets worn down so

divide it and you get .2cm/hr so will be 24 cm

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The line with equation a + 4b = 0 coincides with the terminal side of an angle θ in standard position and cos θ>0 . What is t

Nikitich [7]

Answer:

$\frac{-1}{\sqrt{17} }$

Step-by-step explanation

We have given that equation of line a+4b=0

⇒4b= -a

⇒ $b= \frac{-a}{4}$

slope of line = $tan\theta =\frac{P}{B}= \frac{-1}{4}$

⇒ $tan\theta$ is negative therefore it lies into 4th quadrant

By, Pythagoras theorem $H^2=P^2+B^2$

by putting value of P= -1 & B=4

the value of $H=\sqrt{17}$

with the given condition $cos\theta>0$

i.e. $\theta$ ∈ (3π/2, 2π)

now, $sin\theta= \frac{P}{H}= \frac{-1}{\sqrt{17}}$

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3 years ago

8) Monica spent $34 on brownies and cookies. We know brownies cost $2

Anna [14]

The answer is

2b + .75c = 34

3 0

3 years ago

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melomori [17]

C. hope this helps:)

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The measures of the angles of a triangle are (3x – 100)°, (x – 10)°, and (x – 10)°.

statuscvo [17]

Answer:

x = 60

largest angle = 80°

Step-by-step explanation:

the sum of all three angles in a triangle = 180°

(3x - 100) + (x - 10) + (x - 10) = 180

simplify:

5x = 300

x = 60

angles are 80°, 50°, and 50°

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2 years ago

What is the area of the composite figure?

s344n2d4d5 [400]

Answer:

the answer is 96 squared feet

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