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3 years ago

If this correct too? Sorry if I ask again, I feel kinda insecure.

Mathematics

1 answer:

kifflom [539]3 years ago

3 0

Answer:

5) 756 candies in each cupcake

Step-by-step explanation:

the above two are correct

1 package has 6 cupcakes

3 candy in each cupcake

42 packages = how many candies

42 * 6 = 252 cupcakes

252 * 3 = 756 candies in each cupcake

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Given P(X) = 0.5, P(Y) = 0.4, and P(Y|X) = 0.3, what are P(X and Y) and P(X or Y)?

scZoUnD [109]

Use the definition of conditional probability to find the "and" probability:

$P(Y\mid X)=\dfrac{P(X\cap Y)}{P(X)}\implies P(X\cap Y)=0.3\times0.5=0.15$

Use the inclusion/exclusion principle to find the "or" probability:

$P(X\cup Y)=P(X)+P(Y)-P(X\cap Y)=0.5+0.4-0.15=0.75$

6 0

3 years ago

An object travels 4/5 miles in one-half hour. what is it’s speed in miles per hour ?

In-s [12.5K]

The answer is 586 miles

5 0

3 years ago

Read 2 more answers

Suppose that a bored student wants to go to a restaurant for lunch, but she only has an hour in which to go, eat, and get back i

Blababa [14]

Missing information

Take local speed ad 30 mph and express your answer in miles

Answer:

7.5 miles

Step-by-step explanation:

Time for lunch is 1 hour but once will wait for 30 minutes before served and eat.

Out of 1 hour, 30 mins is for service and eating to mean time to get from work to restaurant, to and fro is the other 30 mins

Since 30 mins is for to and fro, then one way direction takes 15 mins.

Speed, s=d/t and distance d=speed*time

Given local speed of 30 mph and time as 15 mins,

To convert minutes to hours, we divide it by 60 hence the distance is

30*15/60=7.5 miles

Therefore, the student can go to a restaurant that is 7.5 miles from the office.

4 0

3 years ago

What is the answer for this

Brilliant_brown [7]

Parallelogram

Area: 24m²

Perimeter: 26m

Trapezoid

Area:21cm²

Perimeter:22.6cm

5 0

4 years ago

Please help me with both of these questions I’m supper stuck

Vitek1552 [10]

Answer:

ONE SOLUTION

Step-by-step explanation:

When two points on a line are given, the equation of the line is given by the formula:

$\frac{y - y_1}{y_2 - y_1} = \frac{x - x_1}{x_2 - x_1}$

where $(x_1, y_1)$ and $(x_2, y_2)$ are the points on the line.

Here, the first set of points are: $(-1, 3)$ and $(0, 1)$ .

Therefore, $(x_1, y_1) = (-1, 3)$ and $(x_2,y_2) = (0, 1)$ .

The line passing through this is given by:

$\frac{y - 3}{1 - 3} = \frac{x + 1}{1}$

$\implies y - 3 = -2x - 2$

∴ 2x + y - 1 =0

Now, for the second line, the points are:

$(x_1, y_1) = (1, 4)$ and $(x_2, y_2) = (0, 2)$ .

Therefore, $\frac{y - 4}{-2} = \frac{x - 1}{-1}$

$\implies -y + 4 = -2x + 2$

∴ 2x - y + 2 = 0

Now, to determine the number of solutions the two equations have, we solve these two equations,

Adding Eqn(1) and Eqn(2) we get:

4x = -1

$\implies x = \frac{-1}{4}$

And $y = \frac{3}{2}$ .

Since, we arrive at unique values of 'x' and 'y', we say the lines have only one unique solution.

5 0

4 years ago