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andrezito [222]
2 years ago
8

Kathy has $2.10 in her pocket. She only has two different types of coins. She has the same number of each coin. What kinds of co

ins does she have and how many of each does she have?​
Mathematics
1 answer:
sweet-ann [11.9K]2 years ago
5 0

Answer:

6 quarters and 6 dimes

Step-by-step explanation:

since there is 6 quarters it would be 6x$.25 which is $1.50, and each dime is worth 10 cents so 6x$.10 is $.60, and $1.50+$.60=$2.10

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The Art Club at Reynolds High School (ROCA) is selling paintings and clay coffee mugs to raise money for a trip to all the museu
suter [353]

Answer:

See below and attached

Step-by-step explanation:

Let the number of paintings is x and the number of mugs is y.

<u>We have following inequalities:</u>

  • x + y ≤ 350
  • 20x + 15y > 4500

The graphical solution is attached.

<u>The solution is:</u>

  • 225 < x ≤ 350
  • 300 < y ≤ 350

6 0
2 years ago
How do we check if a solution is extraneous? Use these equations as examples to help you explain:
Maurinko [17]
Multiplying both sides of a rational equation by a variable expression introduces the possibility of extraneous solutions. Therefore, we must check the solutions against the set of restrictions. If a solution is a restriction, then it is not part of the domain and is extraneous.
5 0
2 years ago
What numbers are 3 units away from -1 on a number line?
Liono4ka [1.6K]

2 Would be your answer if the units are positive.


8 0
3 years ago
In frequency curve the points are joined by bits of a straight line. True/False​
pashok25 [27]
False. The frequency curve for a distribution can be obtained by drawing a smooth and free hand curve through the midpoints of the upper sides of the rectangles forming the histogram.
7 0
2 years ago
A bet on "black" in Roulette has a probability of 18/38 of winning. If you win, you double your money. You can bet anywhere from
abruzzese [7]

Answer:

Check the explanation

Step-by-step explanation:

let the money on bet is X.

probability of winning =18/38=9/19

probability of losing =(1-9/19)=10/19

expected outcome =\tiny \sumprobability *return   =(

Expected value of return after one bet is =(9/19*x)-(10/19*x)=-1x/19

it is negative which is obvious cause casinos are there to earn money.

a) Our best strategy in this case as probability of winning is near by 50 %, we should place a bet of 1 $ each,and when we lose one bet consecutively we should bet twice the amount..

Cause two consecutive losses on black has less probability.

c) In case we have to reach 30 $ we have to use the same strategy as above.

7 0
3 years ago
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