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marusya05 [52]
3 years ago
8

10 points! I know the answer, but I don't understand why. Can you please explain why the interest rate is 4 percent?

Mathematics
2 answers:
Ganezh [65]3 years ago
4 0
Because, after 3 years 1500+(3*60) is 1680! Hope this helped! Brainliest is always appreciated.
OleMash [197]3 years ago
3 0
The amount of interest is the increase in the account: $1680 -1500 = $180.

Simple interest is computed by
  I = Prt
You have I = 180, P = 1500, t = 3 and you want to find r. Put the numbers in the formula and solve.
  180 = 1500*r*3
  180 = 4500*r
  180/4500 = r = 0.04

Of course, you know that 0.04 = 4/100 = 4%.
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A triangle with side lengths 13, 30, and 42 is a right triangle. True or False?​
kaheart [24]

Answer:

False

Step-by-step explanation:

42^2-30^2-13^2=695

695 ≠ 0

4 0
3 years ago
Please answer! Will mark brainliest. <br><br> -3|5x-2|&gt;4
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Answer:

Step-by-step explanation:

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Read 2 more answers
Consider an experiment where two 6-sided dice are rolled. We can describe the ordered sample space as below where the first coor
agasfer [191]

Answer:

  • E = { (4,1) , (3,2) , (2,3) , (1,4) }
  • P(E)=\frac{1}{9}
  • P(F|E)=\frac{1}{4}

Step-by-step explanation:

Let's start writing the sample space for this experiment :

S= { (1,1) , (1,2) , (1,3) , (1,4) , (1,5) , (1,6) , (2,1) , (2,2) , (2,3) , (2,4) , (2,5) , (2,6) , (3,1) , (3,2) , (3,3) , (3,4) , (3,5) , (3,6) , (4,1) , (4,2) , (4,3) , (4,4) , (4,5) , (4,6) , (5,1) , (5,2) , (5,3) , (5,4) , (5,5) , (5,6) , (6,1) , (6,2) , (6,3) , (6,4) , (6,5) , (6,6) }

Let's also define the event E ⇒

E : '' The sum of the two dice is 5 ''

We can describe the event by listing all the favorables cases from S ⇒

E = { (4,1) , (3,2) , (2,3) , (1,4) }

In order to calculate P(E) we are going to divide all the cases favorables to E over the total cases from S. We can do this because all 36 of these possible outcomes from S are equally likely. ⇒

P(E)=\frac{4}{36}=\frac{1}{9} ⇒

P(E)=\frac{1}{9}

Finally we are going to define the event F ⇒

F : '' The number of the first die is exactly 1 more than the number on the second die ''

⇒

F = { (2,1) , (3,2) , (4,3) , (5,4) , (6,5) }

Now given two events A and B ⇒

P ( A ∩ B ) = P(A,B)

We define the conditional probability as

P(A|B)=\frac{P(A,B)}{P(B)} with P(B)>0

We need to find P(F|E) therefore we can apply the conditional probability equation :

P(F|E)=\frac{P(F,E)}{P(E)}   (I)

We calculate P(E)=\frac{1}{9} at the beginning of the question. We only need P(F,E).

Looking at the sets E and F we find that (3,2) is the unique result which is in both sets. Therefore is 1 result over the 36 possible results. ⇒

P(F,E)=\frac{1}{36}

Replacing both probabilities calculated in (I) :

P(F|E)=\frac{P(F,E)}{P(E)}=\frac{\frac{1}{36}}{\frac{1}{9}}=\frac{1}{4}=0.25

We find out that P(F|E)=\frac{1}{4}=0.25

6 0
3 years ago
Lucy took three tests. If her median score was 86, her mean score was 87, and the range was 13, what were her three test scores?
sveticcg [70]
      x+82+y
______________  =87
         3
y-x=17
87,98, and 82.
3 0
3 years ago
If a/2b =3/5 and 4b/3c=1/7, then a/c=<br> I will mark you brainlist whoever get this correct
ioda

Answer:

a/c=2/7 u are welcome thanks for ur help

7 0
3 years ago
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