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Flauer [41]
3 years ago
6

Please help!

Mathematics
2 answers:
Reptile [31]3 years ago
4 0
How many centimeters was it at first then I can help you
WARRIOR [948]3 years ago
3 0

Answer:

After 7 hours about 70% of the candle was melted

Step-by-step explanation:

First let's find the volume of the candle and the volume of wax melted off. Then we can divide them to find the percent of the candle that is melted off.

=πr  

2

h

=π⋅4  

2

⋅6

=π⋅16⋅6

=96π             use 3.14 for π

=301.44 cm  

3

 

​  

Hint #33 / 6

We know the candle is burning at a rate of 30\text{ cm}^330 cm  

3

 per hour because after 22 hours, 60\text{ cm}^360 cm  

3

 of the candle was melted off.

Percent candle melted off

​    

=  

Original volume of candle

Amount candle melted off

​  

=  

301.44 cm  

3

 

210 cm  

3

 

​  

≈70%

​  

Hint #66 / 6

After 77 hours about 70% of the candle is melted off.

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AfilCa [17]
Answer:166.66

Step by step explanation
4 0
3 years ago
Help me with this please!?!?!?!?!
I am Lyosha [343]

Answer:

17/4

Step-by-step explanation:

add the fractions

5 0
2 years ago
18 Andy flies from the UK to Japan.
kotykmax [81]

Answer:

<u>Leila pays more</u> than Andy to fly from the UK to Australia.

Step-by-step explanation:

Given:

Andy flies from the UK to Japan.

His plane ticket costs £554.

Andy then flies from Japan to Australia.

His plane ticket costs 70 140 Japanese Yen.

The exchange rate is £1 = 140 Japanese Yen.

Leila flies from the UK to Australia.

Her plane ticket costs 1860 Australian dollars.

The exchange rate is 1 Australian dollar = £0.62.

<u>Now, to find Andy or Leila who pays more to fly from the UK to Australia.</u>

Andy flies from the UK to Japan.

His plane ticket costs = £554.

Andy then flies from Japan to Australia.

His plane ticket costs 70 140 Japanese Yen.

The exchange rate is £1 = 140 Japanese Yen.

So, by using conversion factor we convert Japanese Yen to £.

140 = £1

70140 = 70140\div 140=\£501.

His plane ticket costs = £501.

Now, adding both the cost of tickets:

501+554=\£1055.

Andy total pays fly from the UK to Australia is £1055.

Now, to get the cost of plane ticket of Leila from the UK to Australia.

Her plane ticket costs 1860 Australian dollars.

The exchange rate is 1 Australian dollar = £0.62.

So, by using conversion factor:

1 Australian dollar = £0.62

1860 Australian dollar = 1860\times 0.62=\£1153.2

Her plane ticket costs is £1153.2.

<u><em>As, we see that cost of plane ticket of Andy is £1055 and cost of plane ticket of Leila is £1153.2.</em></u>

<em>Thus, Leila pays more.</em>

Therefore, Leila pays more than Andy to fly from the UK to Australia.

4 0
3 years ago
Prove (x+y)^2=x^2+2xy+y^2
Scrat [10]
Rules of exponents and the distributive property apply.
  (x+y)² = (x+y)·(x+y) . . . . . meaning of exponent of 2
  = x·(x+y) +y·(x+y) . . . . . . . distributive property
  = x·x +x·y +y·x +y·y . . . . . distributive property
  = x² +x·y +x·y +y² . . . . . . meaning of exponent of 2, commutative property of multiplication
  = x² +(1+1)·x·y +y² . . . . . . distributive property
  = x²+2xy+y² . . . . . . . . . the desired form
Thus
  (x+y)² = x²+2xy+y²
3 0
3 years ago
Read 2 more answers
15 points. What is the value of k?
Lubov Fominskaja [6]

Answer:

k = 10

Step-by-step explanation:

The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

∠ ZYM is an exterior angle of the triangle, thus

4k + 5 + 6k + 10 = 115, that is

10k + 15 = 115 ( subtract 15 from both sides )

10k = 100 ( divide both sides by 10 )

k = 10

7 0
3 years ago
Read 2 more answers
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