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jonny [76]
3 years ago
13

A large jar contains 1230 coins. The result of 50 coins pulled at random from the jar is given below

Mathematics
2 answers:
AURORKA [14]3 years ago
6 0

Ans$123 worth of quarters in the jar.

20

50

=  

2

5

1230 ×  

2

5

=  

2460

5

= 492 quarters  

492 × $0.25 = $123 wer:

Step-by-step explanation:

dimulka [17.4K]3 years ago
5 0

Answer:

A

Step-by-step explanation:

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Anna invests $7,000 in an account that compounds interest continuously and earns 7.5%. How long will it take for her
NeX [460]

Answer:

It will take 36.1 years for her money to reach $105,000.

Step-by-step explanation:

The amount of money earned after t years in continuous interest is given by:

P(t) = P(0)e^{rt}

In which P(0) is the initial investment and r is the interest rate, as a decimal.

Anna invests $7,000 in an account that compounds interest continuously and earns 7.5%.

This means that P(0) = 7000, r = 0.075

How long will it take for her money to reach $105,000?

This is t for which P(t) = 105000.

P(t) = P(0)e^{rt}

105000 = 7000e^{0.075t}

e^{0.075t} = \frac{105000}{7000}

e^{0.075t} = 15

\ln{e^{0.075t}} = \ln{15}

0.075t = \ln{15}

t = \frac{\ln{15}}{0.075}

t = 36.1

It will take 36.1 years for her money to reach $105,000.

6 0
3 years ago
PLEASE IF I DON GET THIS RIGHT I WILL HAVE TO REDO MATH PLEASE HELP
Helen [10]

Answer:

x= 8 and y= 8 square root of 2

Step-by-step explanation:

6 0
3 years ago
I need help with this
Aleksandr [31]

Answer:

3. m∠1 = 106° ~ this is because ∠1 and ∠2 together make a straight line and are therefore supplementary, meaning added together, they equal 180° (so I did 180° - 74° = 106°)

4. m∠3 = 74° ~ again, it is supplementary to ∠1. It is also equal to ∠2

5. m∠8 = 114° ~ angles opposite of each other (like 1 and 4) are equal (as we know from question 4). From there, we can use the corresponding angle theorem, so we know 4 and 8 are congruent. (also you can just know 1 and 8 are congruent by using the opposite exterior angles theorem)

6. m∠6 = 124° ~ using same-side interior angle theorem, they are supplementary angles (or the corresponding angles theorem mentioned above, make 4 congruent to 8, and 8 is supplementary to 6)

7. m∠7 = 96° ~ using same side exterior angle theorem, these angles are supplementary

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4 0
2 years ago
Can someone help me with this one math question? 15 points!
earnstyle [38]
I would have to say it's number 2
7 0
3 years ago
Read 2 more answers
How do you do this question?
azamat

Answer:

a. 42%

b. 16%

Step-by-step explanation:

a. According to the curve, the bottom 80% of families has about 58% of the income, so the top 20% has about 42%.

b. The bottom 60% of families have about 32% of the income, and the bottom 40% of families have about 16% of the income.  So the third quintile has about 32% − 16% = 16%.

6 0
3 years ago
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