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Furkat [3]
3 years ago
6

Jonathan and Tim want to predict how many quarters are in a large jar containing 120 coins. Jonathan randomly selects a sample o

f 10 coins from the jar, while Tim randomly selects a sample of 30 coins. Then they count the number of quarters in each sample. Whose sample should more accurately predict the number of quarters in the jar?
sample should give a more accurate prediction of the number of quarters in the jar.
Mathematics
2 answers:
vovangra [49]3 years ago
5 0

Answer:

30 coins

Step-by-step explanation:

its a larger sample size so it has better chance of being correct

murzikaleks [220]3 years ago
4 0

Tim's sample should be more accurate

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2. You plant 48 seeds of a certain flower and 32 of them sprout. Find the
Neko [114]

Answer:

<em>The probability that the next flower seed will sprout is 0.667 or 66.7%</em>

Step-by-step explanation:

<u>Probability</u>

The experimental or empirical probability can be defined as the ratio of the number of times an event occurs to the total number of times the random activity was performed.

It can be calculated as the relative frequency of an event A in a sample space. The question states 32 seeds of a certain flower sprout out of 48 planted seeds. The relative frequency of success is computed as

\displaystyle P(A)=\frac{32}{48}=\frac{2}{3}=0.667

Thus, the probability that the next flower seed will sprout is 0.667 or 66.7%

6 0
3 years ago
6x + 5y = 147<br> 8x + 4y = 156
satela [25.4K]

Answer:

[12, 15]

Step-by-step explanation:

{6x + 5y = 147

{8x + 4y = 156

-¾[8x + 4y = 156]

{6x + 5y = 147

{-6x - 3y = -117 ← New Equation

________________

2y = 30

___ ___

2 2

y = 15 [Plug this back into both equations to get the x-coordinate of 12]; 12 = x

So, using the Elimination Method, what I did here was took the bottom equation and multiplied it by -¾, turning 8x to -6x, canceling out all <em>x-terms</em><em>.</em><em> </em>It does not matter which variable you choose to eliminate, as long as you know what you are doing.

I am joyous to assist you anytime.

3 0
3 years ago
What expression is equivalnt to x +14 +9x-5
elena55 [62]
10x+9 hope it helps
5 0
3 years ago
daniel’s print shop purchased a new printer for 35,000 each year it depreciates at a rate of 5% how much will the printer be wor
frutty [35]

Answer:

$23,219.72

Step-by-step explanation:

ab^x

a: initial value

b: value remaining after depreciation per year (in percentage)

x: number of years that have passed

35000(0.95)^8= 23219.7151

Round to the nearest hundredth value:

About $23219.72

4 0
3 years ago
Plss helpPPPPPPPPPPPPPPPPPppp
Delicious77 [7]

Answer:

5

Step-by-step explanation:

22.50/4.5 is 5

You can check this by doing 5x4.5=22.50

Hope this helps

6 0
3 years ago
Read 2 more answers
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