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kow [346]
1 year ago
8

Train A travels 30 miles in 20 minutes at a constant speed. Train B travels 20 miles in 15 minutes at a constant speed. Redo Whi

ch train is going faster? Circle your answer and show how you figured it out below, Train A Train B
Mathematics
1 answer:
krek1111 [17]1 year ago
3 0
\begin{gathered} \text{Train A}\Rightarrow\frac{30\text{ miles}}{20\text{ minute}}=1.5\text{ miles/minute} \\ \text{ Train B}\Rightarrow\frac{20\text{ miles}}{15\text{ minute}}=1.34\text{ miles/minute} \\ \text{The train A is going faster.} \end{gathered}

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Two cards are selected from a standard deck of 52 playing cards. the first is replaced before the second card is selected. find
Iteru [2.4K]
<span>The correct answer is
</span>  Find the probability of selecting a diamond and then selecting a queen.

 standard deck of 52 playing cards

<span>hearts: 2, 3, 4, 5, 6, 7, 8, 9, 10, j, q, k, A---- > 13 cards</span>

<span>clubs: 2, 3, 4, 5, 6, 7, 8, 9, 10, j, q, k, A---- > 13 cards</span>

<span>spades: 2, 3, 4, 5, 6, 7, 8, 9, 10, j, q, k, A---- > 13 cards</span>

<span>diamonds: 2, 3, 4, 5, 6, 7, 8, 9, 10, j, q, k, A---- > 13 cards</span>

 a)  The probability of selecting a diamond is 13/52

<span>b)  </span>The probability of selecting a queen is 4/52

<span>c)   </span>The probability of selecting a diamond and then selecting a queen is

(13/52)*(4/52)=0.0192------------->1.92%

6 0
3 years ago
If a coin has been altered so that the probability of heads coming up is 3/10, then the probability of tails coming up is also 3
soldier1979 [14.2K]
False. In a coin, there are 2 possible out comes i.e. a head and a tail. if p is the probability of one side coming up, then the probability of the other side comin up will be q = 1 - p.

Therefore, if the probability of head coming up is 3/10, the probability of tail coming up will be 1 - 3/10 = 7/10.
8 0
3 years ago
What is the y-coordinate of the point shown in the graph?
murzikaleks [220]

Answer:

3,-7

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
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maks197457 [2]
Since only half of the 8 white eggs are cracked, then there are 4 cracked, white eggs. The probability of drawing one of these 4 from the 18 total eggs is 4/18 which simplifies to 2/9 or 22%.

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3 0
2 years ago
Which polynomial represents (6 x 2 −x−9)(4x−7)?
nydimaria [60]

Answer:

The answer to your question is 24x³ - 46x²- 28x + 63

Step-by-step explanation:

Data

               (6x² - x - 9)(4x - 7)

Process

1.- Multiply 4x by the three terms of the first polynomial

           (6x² - x - 9)(4x) = 24x³ - 4x² - 36x

2.- Multiply -7 by the three terms of the first polynomial

           (6x² - x - 9)(-7) = -42x² + 7x + 63

3.- Add both result

           24x³ - 4x² - 36x -42x² + 7x + 63 = 24x³ - 46x²- 28x + 63

6 0
3 years ago
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