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ivann1987 [24]
3 years ago
7

A good friend of yours

Mathematics
1 answer:
KATRIN_1 [288]3 years ago
5 0
Sorry i have learnt it but i can remember how to do it

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Alison has all her money invested in two mutual funds, A and B. She knows that there is a 40% chance that fund A will rise in pr
alisha [4.7K]

Answer:

24% probability that both fund A and fund B will rise in price

Step-by-step explanation:

We have these following probabilities:

40% probability that fund A will rise in price.

If fund B rises in price, 60% probability that fund B does.

What is the probability that both fund A and fund B will rise in price

40% of A, and if A rises, 60% is B. Since the only outcome that interests us is both rising in price, we multiply these probabilities

P = 0.4*0.6 = 0.24

24% probability that both fund A and fund B will rise in price

3 0
4 years ago
While in orbit, a space shuttle travels at a speed of 28,200 kilometers per hour. What is the total number of kilometers travele
kogti [31]

Answer:

The distance is 676,800 kilometers, which in scientific notation has a value of 6.748*10⁵ kilometers.

Step-by-step explanation:

A space shuttle travels at a speed of 28,200 kilometers per hour. Given that in 1 day there are 24 hours, it is possible to apply the following rule of three: if in 1 hour the space shuttle travels 28,200 kilometers, in 24 hours how much distance will the space shuttle travel?

distance=\frac{24 hours*28,200 kilometers}{1 hour}

distance= 676,800 kilometers

Scientific notation is a quick way to represent a number using powers of base ten. This notation is used to be able to express very large or very small numbers very easily.

The numbers are written as a product:

a*10ⁿ

where:

  • a is a real number greater than or equal to 1 and less than 10, to which a decimal point is added after the first digit if it is a non-integer number.
  • n is a whole number, which is called an exponent or an order of magnitude. Represents the number of times the comma is shifted. It is always a whole number, positive if it is shifted to the left, negative if it is shifted to the right.

To write the number 676,800 in scientific notation, perform the following steps:

The decimal point is moved to the left as many spaces until it reaches the right of the first digit.  This number is then written, which will be the coefficient a in the expression of the previous product.  In this case a=6.76800= 6.748

The base 10 is written with the exponent equal to the number of spaces that the comma moves. This is a positive number because the comma is shifted to the left. In this case n= 5

Then, <u><em>the distance is 676,800 kilometers, which in scientific notation has a value of 6.748*10⁵ kilometers.</em></u>

5 0
3 years ago
Given that y varies directly as x and y = 18 when x = 6
sergey [27]

Answer:   y = 15,    x = 10

<u>Step-by-step explanation:</u>

NOTE: "varies directly" is of the form    \dfrac{y}{x}=k  where k is the constant of proportionality.

First, input the given x and y-values to find k

\dfrac{y}{x}=k\qquad \qquad \text{Given: y=18, x=6}\\\\\dfrac{18}{6}=k\\\\\boxed{3=k}

Next, input the given value and k = 3 to solve for the missing variable.

x = 5\\\\\dfrac{y}{5}=3\\\\\large\boxed{y = 15}\\\\\\y=30\\\\\dfrac{30}{x}=3\\\\\dfrac{30}{3}=x\\\\\large\boxed{10 = x}

4 0
4 years ago
What is the first quartile of the following data set? 12, 33, 15, 22, 29, 11, 17, 19, 10, 24, 38
vodka [1.7K]
First, organize the numbers in numerical order:
10, 11, 12, 15, 17, 19, 22, 24, 29, 38

Then, find the mean: which is the middle of the data set.  The middle lies right between 17 and 19, which is 18.
The first quartile is the middle of the first half. Which is the number 12.
6 0
3 years ago
Read 2 more answers
Y=-2X, Y=5X+3 how do I solve this equation using substitution or elimination
Basile [38]

Answer:

y= -2x........eqn i

y=5x+3......eqn ii

substituting the value of Y from eqn i in eqn ii, we get,

-2x=5x+3

-7x=3

x= -3/7

so, y= -2x= -2× (-3/7)

so, y= 6/7

3 0
2 years ago
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