So probability is (disred outcomes) divided by (total possible outomces

so
hearts and clubs are 2 out of 4 total suits and since there are the same number of cards per suit, it simplifies
2=desrired oucomes
4=total possible
2/4=1/2=0.5=50%

answer is 1/2 or 0.5 or 50%

6 0

3 years ago

Three-quarters of a number is 15. Work out four-fifths of the number.

azamat

Answer:

Step-by-step explanation:

let the number be x , then

$\frac{3}{4}$ x = 15 ( multiply both sides by 4 to clear the fraction )

3x = 60 ( divide both sides by 3 )

x = 20 , then

$\frac{4}{5}$ × 20 = 4 × 4 = 16

3 0

3 years ago

Read 2 more answers

A hot-air balloon is moving on a bearing of 2450 at 31mph. A wind is blowing with the bearing of 2600 at 23mph. Find the compone

Alborosie

Answer:

$V=(54i) \ mph$

Step-by-step explanation:

According to the problem, the hot-air ballon and the wind are movind in the same direction, which means the component form of the velocity of the ballon is the net vector between both velocities.

Basically, the net velocity is

$v_{net}=31 + 23 = 54 mph$

Because both velocities have the same direction.

Assuming they are moving in a horizontal direction, the component of this velocity is

$V=(54i) \ mph$

4 0

3 years ago

Read 2 more answers

Lucy and Ethel’s favorite store was having a sale. Lucy bought 10 shirts and 4 pairs of jeans and spent $280. Sabrina bought 12

Sphinxa [80]

Answer:

Each shirt costs 12 dollars.

Each pair of pants cost 40 dollars.

Step-by-step explanation:

Let x represent the shirts

Let y represent the pair of jeans

10x + 4y = $280

12x + 5y = $344

Use elimination method to eliminate y

• Multiply the entire first equation by 5.

• Multiply the second entire equation by -4.

5(10x +4y = $280)

-4(12x + 5y = $344)

50x + 20y = 1400

-48x -20y = -1376

2x = 24

x = 12

Each shirt costs 12 dollars.

Solve for how much each pair of jeans costs.

10(12) + 4y = 280

120 + 4y = 280

4y = 160

y = 40

3 0

3 years ago