All categories

2 years ago

There are 20 marbles in a bag. 16 are red. The remaining are white. What is the probability of selecting a red marble

Mathematics

2 answers:

3241004551 [841]2 years ago

7 0

4 marbles white bc 20-16=4

padilas [110]2 years ago

7 0

The probability is 80%
20 Marbles Total
16 Red
16/20=.8=80%

You might be interested in

Jenny uses 2 cups of paint in 4 hours to paint a portrait. How many cups does she use in 30 minutes?

n200080 [17]

Answer: 0.25 Cups. Step-by-step explanation: First divide. 4/4 and 2/4. So now you have that she used 0.5 cups in an hour. Now divide it in half. 0.5/2 which is 0.25.

Hope this helped. If you need anymore help send me a friend request and I will find you.

7 0

2 years ago

Read 2 more answers

Express in Simper Fom : y-x

AveGali [126]

Simplify

$E=\dfrac{\frac{x}{y}-\frac{y}{x}}{\frac{1}{y}+\frac{1}{x}}$

Conditions for the existance of $E:$

$x\neq 0~~\text{ and}~~y\neq 0~~\text{ and }~~x\neq -y.$

(otherwise, the one of the denominators would be zero.)
____________________

Simplifying:

$E=\dfrac{\frac{x}{y}-\frac{y}{x}}{\frac{1}{y}+\frac{1}{x}}$

Multiply both the numerator and the denominator by $xy:$

$E=\dfrac{xy\cdot \left(\frac{x}{y}-\frac{y}{x} \right )}{xy\cdot \left(\frac{1}{y}+\frac{1}{x} \right )}\\\\\\ E=\dfrac{\frac{xy\cdot x}{y}-\frac{xy\cdot y}{x}}{\frac{xy}{y}+\frac{xy}{x}}\\\\\\ E=\dfrac{x^{2}-y^{2}}{x+y}\\\\\\ E=\dfrac{(x+y)(x-y)}{x+y}$

Simplify common factors:

$E=x-y\\\\\\ \therefore~~\boxed{\begin{array}{c}\dfrac{\frac{x}{y}-\frac{y}{x}}{\frac{1}{y}+\frac{1}{x}}=x-y \end{array}}$

6 0

3 years ago

A $35,000 investment at 5.5% for 30 years. Find the future value.

salantis [7]

Answer:

$174438.30

Step-by-step explanation:

35000 × 1.055^30

(original amount) × (decimal percentage)^(years)

35000 × 1.055^30 = 174438.2951

round it up to = $174438.30

8 0

3 years ago

What are factors of 36 and 120

In-s [12.5K]

Answer:

4, 3, 12,

Step-by-step explanation:

7 0

3 years ago

Lin surveyed a class of sixth-graders asking how many hours they spend online every month.

Blizzard [7]

They spend about three hours a day online

3 0

1 year ago