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Natasha2012 [34]
4 years ago
11

What is 15 increased by 20%

Mathematics
1 answer:
Aliun [14]4 years ago
3 0

Answer:

18

Step-by-step explanation:

New value =

15 + Percentage increase =

15 + (20% × 15) =

15 + 20% × 15 =

(1 + 20%) × 15 =

(100% + 20%) × 15 =

120% × 15 =

120 ÷ 100 × 15 =

120 × 15 ÷ 100 =

1,800 ÷ 100 =

18;

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A music website charges x dollars for individual songs and y dollars for an entire album. Person A pays $25.92 to download 6 ind
EleoNora [17]
Amount charged for downloading individual songs = x dollars
Amount charged for downloading an entire song album = y dollars
Person A:
6x + 2y = 25.92
3x + y = 12.96
y = 12.96 - 3x
Person B:
4x + 3y = 33.93
Putting the value of y from the first equation in the second we get
x = 0.99 dollars
Putting the value of x in the first equation we get
y = 12.96 - 3x
= 12.96 - 2.97
= 9.99 dollars
7 0
3 years ago
Let B1W2 denote the outcome that the first ball drawn is B1 and the second ball drawn is W2. Because the first ball is replaced
Sati [7]

Answer:

\{B_1B_1, B_1B_2, B_1W_1, B_1W_2, B_1W_3, \\B_2B_1, B_2B_2, B_2W_1, B_2W_2, B_2W_3, \\

W_1B_1,W_1B_2, W_1W_1, W_1W_2, W_1W_3, \\W_2B_1, W_2B_2, W_2W_1,W_2W_2, W_2W_3, \\W_3B_1, W_3B_2, W_3W_1, W_3W_2, W_3W_3\}

Step-by-step explanation:

\text{If an urn contains two blue balls} (denoted \:B_1 \:and \:B_2) \text{and three white balls},(denoted \:W_1, W_2, \:and\: W_3)

If One ball is drawn, its color is recorded, and it is replaced in the urn. Then another ball is drawn and  its color is recorded.

The 25 Possible outcomes of this experiment are listed below:

\{B_1B_1, B_1B_2, B_1W_1, B_1W_2, B_1W_3, \\B_2B_1, B_2B_2, B_2W_1, B_2W_2, B_2W_3, \\

W_1B_1,W_1B_2, W_1W_1, W_1W_2, W_1W_3, \\W_2B_1, W_2B_2, W_2W_1,W_2W_2, W_2W_3, \\W_3B_1, W_3B_2, W_3W_1, W_3W_2, W_3W_3\}

The tree diagram of this event is also attached.

6 0
4 years ago
Round $6.60 to the nearest 25 cent
igomit [66]

60 cents is closer to 50 than 75... so $6.50 is the answer.

8 0
3 years ago
What is least 1.11, 0.111,1.01,1.001
Elan Coil [88]

0.11 is the least amount.

8 0
4 years ago
Help pleaseeeeeeeeeeee
Amiraneli [1.4K]

volume = \pi \times  {r}^{2} \times h \\ volume = 3.142 \times (10 \div 2)^{2} \times 18 \\ volume \:  = 3.142 \times 25 \times 18 \\ volume = 1413.9{cm}^{3}

price =  \frac{1413.9 \times 0.02}{10}  = 2.8278 = 2.83 \: dollars

7 0
3 years ago
Read 2 more answers
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