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Lerok [7]
3 years ago
8

If you toss two pennies what are the chances of getting two heads?​

Mathematics
1 answer:
Norma-Jean [14]3 years ago
4 0

Answer:

50/50 chance i guessing

If theres 2 pennies

<h2>Hope this helps :)</h2>

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So I don't if I'm right help would be much appreciated
lukranit [14]

Answer:

A is the correct equation

Step-by-step explanation:


3 0
3 years ago
Neeeeeeeddd tooo much helplpp
MariettaO [177]
Hello there. I believe it’s c
8 0
3 years ago
A piggy bank contains pennies, nickels, and dimes. The number of dimes is 15 more than the number of nickels, and there are 140
amm1812

Answer:

Option D is correct.

There are 34 nickels in the piggy bank.

Step-by-step explanation:

A piggy bank contains pennies, nickels and dimes.

Let the number of pennies be p

Let the number of nickels be n

Let the number of dimes be d

Also, note that 1 penny = $0.01

1 nickel = $0.05

1 dime = $0.10

- The number of dimes is 15 more than the number of nickels.

d = 15 + n

- There are 140 coins altogether totaling $7.17.

p + n + d = 140

0.01p + 0.05n + 0.1d = 7.17

Bringing the 3 equations together

d = 15 + n (eqn 1)

p + n + d = 140 (eqn 2)

0.01p + 0.05n + 0.1d = 7.17 (eqn 3)

Substitute (eqn 1) into (eqn 2)

p + n + d = 140

p + n + (15 + n) = 140

p + 2n + 15 = 140

p = 140 - 15 - 2n = 125 - 2n

p = 125 - 2n (eqn 4)

Substitute (eqn 1) and (eqn 4) into (eqn 3)

0.01p + 0.05n + 0.1d = 7.17

0.01(125 - 2n) + 0.05n + 0.1(15 + n) = 71.7

1.25 - 0.02n + 0.05n + 1.5 + 0.1n = 7.17

0.1n + 0.05n - 0.02n + 1.5 + 1.25 = 7.17

0.13n + 2.75 = 7.17

0.13n = 7.17 - 2.75 = 4.42

0.13n = 4.42

n = (4.42/0.13) = 34

d = 15 + n = 15 + 34 = 49

p = 125 -2n = 125 - (2×34) = 125 - 68 = 57

Hence, there are 57 pennies, 34 nickels and 49 dimes in the piggy bank.

Hope this Helps!!!

7 0
3 years ago
Bananas cost $0.54 per lb and grapes cost$1.28 per lb. Leanne bought 2.6 lb of bananas and 3.1 lb of grapes .How much did she pa
slamgirl [31]
So all u have to do is just add $1.28 and $0.54
5 0
3 years ago
What is the constant rate of change in given equation Y= -5x *please Hurry*
statuscvo [17]

Answer:

-5

Step-by-step explanation:

The x and the y are the factors of the equation. Simply extract the value that is not the variable, and, well, you’ll get your constant.

6 0
3 years ago
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