3 years ago

The slope of the graph is -1. Which statement describes how the slope is related to the burning of a candle?

Mathematics

1 answer:

slega [8]3 years ago

6 0

Answer: candle burns down 1 cm per hour

Step-by-step explanation:

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Simplify -2 minus square root of 15 over 2

skad [1K]

The answer is -3.9364916731.

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3 years ago

An elliptical culvert is 3.5 feet tall and 6 feet wide. It is filled with water to a depth of 0.95 feet. Find the width of the s

maks197457 [2]

Answer:

$W_s \approx5.3$

Step-by-step explanation:

From the question we are told that

Height $H=3.5ft$

Weight $W= 6ft$

Depth $D=0.95ft$

Generally the equation for ellipses is given as

$\frac{x^2}{a^2} +\frac{y^2}{b^2} =1$

Where

$b=H/2\\b=3.5/2\\Therefore\\b=1.75\\a=W/2\\a=6/2\\Therefore\\a=3\\$

$\frac{x^2}{3^2} +\frac{y^2}{1.75^2} =1$

Generally to find y in the equation $\frac{x^2}{a^2} +\frac{y^2}{b^2} =1$

$y=-b+d$

$y=-1.75+0.95$

$y=-0.8$

Therefore

$\frac{x^2}{3^2} +\frac{(0.8)^2}{1.75^2} =1$

$\frac{x^2}{3^2} =1-\frac{(0.8)^2}{1.75^2}$

$\frac{x^2}{3^2} =1-0.2089795918$

$X^2 =3^2(1-0.2089795918)$

$X^2 =7.119183674$

$X =\sqrt{7.119183674}$

$X =2.66817984$

Therefore the width of the given stream is

$W_s=2.66817984*2$

$W_s=5.33635968$

$W_s \approx5.3$

3 0

3 years ago

you are working as a Caterer and need 20 gallons of lemonade For an upcoming event. The bottles of lemonade you are purchasing a

kifflom [539]

20 imperial gallons = 90.9218 litres
so i'd say you'd need to buy 91 bottles or...

20 US Liquid gallons = 75.7082 litres
so you'd have to buy 76 bottles.
Hope this answers your question! It depends what gallon you're working from.

3 0

4 years ago

Read 2 more answers

David took his family out for dinner. He planned to leave a 20% gratuity on the bill. What is the total cost if the bill was $12

denis23 [38]

Let’s find 1% of 125 first.
125 x 0.01 = $1.25
1.25 x 20 = $25 gratuity.

Bill + gratuity = Total
$125 + $20 = $145

$145 is the answer.

Hope that helped! :)

4 0

3 years ago

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Is 4 hours worked for $12; 7 hours worked for $28 and equivalent rate or a ratio?

Bond [772]

Answer:

3:4

Step-by-step explanation:

4x=12

x=3

7y=28

y=4