3 years ago

Cara has another candle that is 15 cm tall. How fast must it burn in order to also be 6 cm tall after 4 hours?

Mathematics

1 answer:

egoroff_w [7]3 years ago

4 0

Answer:

It has to burn at a rate of 2.25 cm per hour.

Step-by-step explanation:

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The ratio of boys to girls is 5:3 there are 80 more boys than girls how many girls are there

shtirl [24]

Answer: 120

Step-by-step explanation:

Ratio Quantity

Boys: 5 80 + x

Girls: 3 x

$\dfrac{5}{3}=\dfrac{80+x}{x}\\\\\\5x=3(80+x)\\\\5x=240+3x\\\\2x=240\\\\x=120$

5 0

2 years ago

Which symbol correctly compares the two angle measures? pi/4 radians_____30°

Thepotemich [5.8K]

Answer:

B. $\frac{\pi }{4} Rad>30^{0}$

Step-by-step explanation:

$\frac{\pi }{4} Rad=(180/4)^{0} =45^{0}$

Hope this helps

6 0

2 years ago

Which angle in ABC is the longest

crimeas [40]

Between A and B = 12 is A.

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2 years ago

The population of a strain of bacteria doubles in a culture. At noon there were 80 bacteria present and by 4:00 PM there were 20

Nastasia [14]

Answer:

t = 1/2 hour

Step-by-step explanation:

20480 = 80 $x^{t }$

20480 = 80 $x^{4 }$

20480/80 = $x^{4 }$

256 = $x^{4 }$

x = 4

doubling period

2 = $4^{t}$

t = 1/2 hour

3 0

2 years ago

Which expression is equivalent to -3(y-5) A. -3y-4 B -3y+4 C. -3y-12 D -3y+12

ankoles [38]

Answer:

neither when you multiply them you get -3y+15 not 12

hope this helps

have a good day :)

Step-by-step explanation:

3 0

3 years ago