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Brrunno [24]
3 years ago
15

Suppose you like to keep a jar of change on your desk. Currently, the jar contains the following: 1717 Pennies 1010 Dimes 1919 N

ickels 2323 Quarters Copy Data What is the probability that you reach into the jar and randomly grab a nickel and then, without replacement, a penny? Express your answer as a fraction or a decimal number rounded to four decimal places.
Mathematics
1 answer:
jasenka [17]3 years ago
5 0

Answer:

25.50

Step-by-step explanation:

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You and a friend start riding bikes toward
Setler [38]

Answer:

1.5 hours

I traveled farther

2 miles

Step-by-step explanation:

\text{Speed}=\dfrac{\text{Distance}}{\text{Time}}

My speed

\dfrac{2\dfrac{1}{6}}{\dfrac{1}{4}}=\dfrac{\dfrac{13}{6}}{\dfrac{1}{4}}=\dfrac{26}{3}\ \text{mph}

Speed of my friend

7\dfrac{1}{3}=\dfrac{22}{3}\ \text{mph}

Time passed for both me and my friend will be equal if we start at the same time and the combined distance covered by both of us will be 24 miles. Let t be the time taken to meet

\text{Distance}=\text{Speed}\times\text{Time}

\dfrac{26}{3}t+\dfrac{22}{3}t=24\\\Rightarrow \dfrac{48}{3}t=24\\\Rightarrow 16t=24\\\Rightarrow t=\dfrac{24}{16}\\\Rightarrow t=1.5\ \text{hours}

So, we meet each other after 1.5 hours.

Distance traveled by me

\dfrac{26}{3}\times 1.5=13\ \text{miles}

Distance traveled by my friend

\dfrac{22}{3}\times 1.5=11\ \text{miles}

So, I traveled farther by 13-11=2\ \text{miles}.

7 0
3 years ago
Find two numbers whose ratio is 3:7 and whose sum is 150
mr Goodwill [35]
3x-first\ number\\7x-second\ number\\\\3x+7x=150\\10x=150\ \ \ \ \ |:10\\x=15\\\\3\cdot15=45\\7\cdot15=105\\\\Searched\ number\ are\ 45\ and\ 105
6 0
3 years ago
Increase each of the following amounts by the percentage given.
umka21 [38]

Step-by-step explanation:

(a)90 by 10%

90+10% of 90=90(1+0.1)=99

(b)60 by 25%

60(1+0.25)=75

(c)80 by 75%

80(1+0.75)=140

(e)110 by 60%

110(1+0.6)=176

(f)480 by 115%

480(1+1.15)=1032

(g)140 by 45%

140(1+0.45)=203

6 0
3 years ago
The value of a + b + c for equation 2 Y - x = 7 is ​
morpeh [17]

Answer:

Correct option is

B

1.x+0.y=7

x=7 can be written as, 1.x+0.y=7 as the coefficient of x is 1 and that of y is 0. Step-by-step explanation:

6 0
2 years ago
I will give multiple brainlist to people who help me with these slides!
lesantik [10]

Answer:

A)6

B)ST

Step-by-step explanation:

A if u turn it,  15 is equal to the 10

15/9=10/x

x=90/15

x=6

B) Turn it so #2 is facing up.

ST is the same.

Hope this helps plz hit the crown :D

4 0
3 years ago
Read 2 more answers
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