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jonny [76]
3 years ago
5

A train is moving at uniform speed of 75km/hr.

Mathematics
1 answer:
Lina20 [59]3 years ago
4 0

Answer:

1. 30km in 24 mins

Step-by-step explanation:

\frac{75}{60}=1.25km/min

1.25×24=30km

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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
Match the algebraic expressions and the algebraic equations
Dmitry_Shevchenko [17]

The given terms are :

  • 1. Algebraic expression

  • 2. Algebraic equation

  • 3. Algebraic equation

  • 4. Algebraic expression

  • 5. Algebraic equation

  • 6. Algebraic expression
4 0
3 years ago
5. A 12-ounce jar of jam costs $2.40. A 16-ounce jar costs $4.00. What is the
scoray [572]

The difference in the cost per ounce is $0.05 per ounce

<h3>Fractions and proportion</h3>

Fractions are written as the ratio of two integers

If a 12-ounce jar of jam costs $2.40, the cost per ounce will be:

Unit cost = 2.40/12

Unit cost = $0.2

Similarly, if a 16-ounce jar costs $4.00, the price of a ounce will be:

Unit cost = 4/16

Unit cost. =$0.25

difference = $0.25 - $0.2

difference = $0.05

Hence the difference in the cost per ounce is $0.05 per ounce

Learn more on unit price here: brainly.com/question/7718596

#SPJ1

6 0
2 years ago
Ester's choir wants to learn a new song for the school concert in 7 weeks. The song has 3,016 lines. The choir learns an equal n
Ghella [55]

Answer:

the answer you will get is 61.5

Step-by-step explanation:

First you calcuate the number of days in the learning process there will be which there will be 49 days since 7 days x 7 weeks = 49 days. Then, you divide 3,016 and 49 to get 61.5510204 and then you round that up to get 61.5 or is you want a whole number with no decimals 62

3 0
3 years ago
Read 2 more answers
Rita wants to buy a rocking chair for $160 she will pay 10% down and pay the rest and six monthly installments what will be the
VLD [36.1K]
The amount for deposit is (10/100) × 160 = 16 So the remaining amount to pay is 160 - 16 = 144 and has to be paid within six months. 6 months --> 144 So 1 month ---> 144/6 = $24
5 0
3 years ago
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