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Keith_Richards [23]
3 years ago
14

A bag contains pennies, nickles, dimes, and quarters.There are 50 coins in all. Of the coins, 10% are pennies and 32% are dimes.

There are 9 more nickles than pennies. How much money does the bag contain?
Mathematics
1 answer:
ikadub [295]3 years ago
8 0
10 pennies, 16 dimes, 19 nickles.
Sorry I'm not from US so I don't know your currency. Sorry about that. Hope what I have given you is enough. :)
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Mona wants to obtain a 94% confidence interval for the mean weight of turtles. She read in the Big Book of Turtles that the stan
mel-nik [20]

Answer:

87

Step-by-step explanation:

Population standard deviation = σ = 37 grams

Confidence interval = 94%

(1-α)×100% = 94

⇒α = 0.06

From table z table and interpolation

z = 1.881

L = Confidence interval length = 15

N = Number of samples

L=2z_{\alpha/2}\frac{\sigma}{\sqrt N}\\\Rightarrow \sqrt N=2z_{\alpha/2}\frac{\sigma}{L}\\\Rightarrow \sqrt N=2\times 1.881\frac{37}{15}\\\Rightarrow \sqrt N=9.2796\\\Rightarrow N=86.11097616\approx 87

∴ Number of turtles must she must weigh is 87

6 0
4 years ago
PLEASE HELP ASAP!!! CORRECT ANSWERS ONLY PLEASE!!!
fiasKO [112]

Answer: tan(E)=1.70

Step-by-step explanation:

For this exercise you need to remember the following Trigonometric Identity:

tan\alpha =\frac{opposite}{adjacent}

You must observe the figure given in the exercise.

You can notice that the given triangle EFG is a Right triangle (Right triangles are defined as those triangles that have an angle that measures 90 degrees).

So, you can identify in the figure that:

\alpha=E\\\\ opposite=FG=56\\\\adjacent=EF=33

So, knowing these values, you can substitute them into  tan\alpha =\frac{opposite}{adjacent} and then you must evaluate (Remember to round the result to the nearest hundreth).

Therefore, through this procedure you get:

 tan(E)=\frac{56}{33}\\\\tan(E)=1.70

4 0
3 years ago
Evaluate this expression : 5x^3 - 7/4x^2. x=2
Mkey [24]
5(2)^3-7/ 4(2)^2 =  5(8) - 7 / 4(4) = 40-7/ 16 = 33/16

1. Substitute 2 in to the places where x are.
2.solve the square root first then multiply whats outside the square root with the numbers. (2)^3 = 8 and (2)^2 = 4, now multply 5 x 8 = 40 and multiply 4 x 4= 16
3. subtract 7 from 40 to get 33.
4. Check if it can be further simplified, this cant so the answer is 33/16



5 0
4 years ago
Write the domain and the range of the function as an inequality, using set notation, and using interval notation. also describe
kondaur [170]

When the domain of the function is continuous, a different approach may well be required, although even here we note that in practice, optimization problems are usually solved using a computer, so that in the final analysis the solutions are represented by strings of binary digits (bits).

4 0
3 years ago
9y - 36 simplified or expanded
aleksklad [387]

Answer:

simplified

Step-by-step explanation:

look this is mad easy the answer is simplified because since there is no equal sign you dont need to find the value of y.

6 0
3 years ago
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