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dimulka [17.4K]
2 years ago
10

What's the square root of 1000 divided by 3

Mathematics
1 answer:
slava [35]2 years ago
6 0

Answer:

10.5409255339

Step-by-step explanation:

cac

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Angelina has a collection of Nickles and dimes worth 4.65 . If she has 70 nickles and dimes , how many of each does she have ?
Mila [183]
System of equations (yay) x=nickels y=dimes
1st  x+y=70
2nd  .5x+.10y=4.65
3rd  Move decimal (multiply everything by 100) :  5x=10y=465

x+y=70
-x         -x
y=70-x

(Substitute) 5x+10(70-x)= 465
(Distribute) 5x+700-10x=465
(Solve equation) -5x=-235 >>> x=47 >>> 
Answer- 47 dimes and 23 nickels

Please let me know if I need to explain further (:

3 0
3 years ago
Read 2 more answers
The area of a square field is 50625 meter square choose its perimeter
Naddik [55]

Answer:

900

Step-by-step explanation:

A=SxS

50265=S^2

S= √50265

S=225

P=Sx4

P=225x4

P=900

3 0
3 years ago
It has been estimated that 40% of marriages end in divorce. If you randomly select 9 recently married couples what is the probab
Serga [27]

Answer:

Step-by-step explanation:

Hello!

In this example you are interested to know how many matrimonies and up in divorce.

The study variable is X: number of marriages that ended up in divorce in a sample of nine.

This variable is a discrete variable and a quick check will tell you if it follows the binomial criteria, if it does, then the variable will have binomial distribution:

Binomial criteria:

1. The number of observation of the trial is fixed (n = 9)

2. Each observation in the trial is independent, this means that none of the trials will affect the probability of the next trial.

3. The probability of success in the same from one trial to another (the "success" of the trial is that the matrimony ended up in divorce and it's estimated probability is p=0.40

So X≈ Bi (n;ρ)

You have to calculate the probability that at least one of the marriages end in divorce, this is that "one or more" of the marriages end in divorce, symbolically:

P(X≥1)

This expression includes the probabilities P(X=1), P(X=2), P(X=3), P(X=4), P(X=5), P(X=6), P(X=7), P(X=8), P(X=9).

One way to calculate this is by applying the formula for calculating point probabilities under the binomial distribution P(X)= \frac{n!}{(n-X)!X1}*(p^X)*(q^n-X) nine times and then add them or you can use a table of the binomial distribution. These tables show cumulative probabilities for many distributions, P(X≤x₀)

To reach the probability value using the table you have to do the following:

P(X≥1)= 1 - P(X<1)

One is the max cumulative probability, so you have to subtract from it everything that isn't included in the expression, the only probability that is "left out" from P(X≥1) is P(X=0), in the table you have to look for the probability of P(X≤0)= 0.0101, then you calculate the probability as follow:

P(X≥1)= 1 - P(X<1)= 1 - P(X≤0)= 1 - 0.0101= 0.9899

I hope this helps!

6 0
3 years ago
Compare Loan Terms
zmey [24]

Answer:

Step-by-step explanation:

the answer is basically 4.5% and the 6%

5 0
2 years ago
Read 2 more answers
The school band will sell pizzas to raise money for new uniforms. The supplier charges $143 plus $5 per
aev [14]

Answer:

7 x > 4 x + 100

7 x - 4 x > 100

3 x > 100

x > 100 : 3

x > 33.33

Answer: they have to sell 34 pizzas to make a profit.

Step-by-step explanation:

6 0
3 years ago
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