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lesantik [10]
3 years ago
15

,,,Help Please.. Question in the file.

Mathematics
1 answer:
Snowcat [4.5K]3 years ago
6 0
So hmmm there are 5pennies in a nickel, and 10pennies in a dime and 25pennies in a quarter

now, in $6.10, there are 610 pennies

n = amount of nickels coins
d = amount of dime coins
q = amount of quarter coins

so... we know, there are 5*n or 5n pennies in the nickels, and 10*d or 10d pennies in the dimes and 25*q or 25q in the quarter coins, and we know their sum is 610 pennies total, thus

5n + 10d + 25q = 610

now, there are 4 more "n" then "d", so whatever "d" is, "n" is 4  more than that
n = d + 4

and twice as many "q" than "n", so, whatever "n" is, then
q = 2n

\bf 5n+10d+25q=610\implies n+2d+5q=122\qquad 
\begin{cases}
n=d+4\\
q=2n\\
------\\
q=2(d+4)\\
\qquad 2d+8
\end{cases}
\\\\\\
\boxed{d+4}+2d+5\left( \boxed{2d+8} \right)=122

solve for "d", to see how many dimes are there

what about the nickels? well, n = d + 4
what about the quarters?  well, q = 2d + 8
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PLEASE HELP ME 30POINTS +BRAINLY
Serga [27]

1) If a die is rolled once, determine the probability of rolling a 4: Rolling a 4 is an event with 1 favorable outcome (a roll of 4) and the total number of possible outcomes is 6 (a roll of 1, 2, 3, 4, 5, or 6). Thus, the probability of rolling a 4 is \frac{1}{6}.

If a die is rolled once, determine the probability of rolling at least a 4: Rolling at least 4 is an event with 3 favorable outcomes (a roll of 4, 5, or 6) and the total number of possible outcomes is again 6. Thus, the probability of rolling at least a 4 is \frac{3}{6} = \frac{1}{2}.

<h3>Here are two more examples: </h3>

If a coin is flipped twice, determine the probability that it will land heads both times:

Favorable outcomes: 1 -- HH

Possible outcomes: 4 -- HH, HT, TH, TT

Thus, the probability that the coin will land heads both times is \frac{1}{4}.

If Dan grabs one sock from a drawer containing 3 white socks, 4 blue socks, and 5 yellow socks, what is the probability that he will grab a white sock?

Favorable outcomes: 3 (3 white socks)

Possible outcomes: 12 (3 white socks + 4 blue socks + 5 yellow socks)

Thus, the probability that Dan will grab a white sock is \frac{3}{12} = \frac{1}{4}.

6 0
3 years ago
9. The 10,000 seat stadium is 89% full. How many people are watching the game inside the stadium? with solution pls. ​
Ksivusya [100]

Answer:1100

Explanation:89% of 10,000 is 8900 subtract 8900 from 10,000 bam you got 1100

your welcome

7 0
3 years ago
Read 2 more answers
Betty saves $161 a month. She saves $141 less each month than Jack. How much will jack save in 2 years?
tresset_1 [31]

Given that Betty saves $161 per month which is $141 less than Jack per month. find the amount that Jack will save in 2 years.

First, find how much Jack saves. We can do this buy adding 141 to 161 since Betty saves 141 less meaning we can reverse it by adding it.

141 + 161 = 302

Now, that we know how much Jack saves per month.

Then, we have to find out how many months are in 2 years.

We already know that there is 12 months in a year, so for 2 years, we can simply multiply by 2.

12 x 2 = 24

Therefore, there are 24 months in two years.

Lastly, multiply 24 months by the amount that Jack saves to get the amount in total.

24 x 302 = 7,248

Thus, Jack will save approximately $7,248 in 2 years.

6 0
3 years ago
Read 2 more answers
Please explain/show work. P.s. it won’t let me uncheck a problem, so D isn’t necessarily the answer.
beks73 [17]

Answer:

D) \displaystyle\frac{1}{4} x^2

Step-by-step explanation:

Hi there!

The correct answer is D.

\displaystyle\frac{1}{4} x^2 is the same as \displaystyle\frac{1}{4}* x^2, which is the same as \displaystyle \frac{x^2}{4}.

I hope this helps!

6 0
3 years ago
What does the red arrow represent in the dot plot?
Naily [24]

Answer:

outlier

Step-by-step explanation:

I think it is an outlier

Hope this helps <3

GL on your test or wtvr

5 0
2 years ago
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