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3 years ago

There is a bag filled with 3 blue and 5 red marbles.

Mathematics

1 answer:

slava [35]3 years ago

7 0

Answer:

4/7

Step-by-step explanation:

The first time, the probability is 5/8. Then you remove one marble that is red (if you get a red one), so the probability is 4/7.

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Joyce saved $80 on an item that was 65<br> %<br> off. What was the original price?

Xelga [282]

The answer is 132. 132 is the original price. 80$ x 65% = 52. 80 + 52 = 132. So 132 is answer and original price.

7 0

4 years ago

Read 2 more answers

Can you please help me on -6(7v-5)-3=3(v-6)

GalinKa [24]

Answer:

v = 1

Step-by-step explanation:

-6(7v - 5) - 3 = 3(v - 6)

distribute -6 into 7v - 5

-42v + 30 - 3 = 3(v - 6)

distribute 3 into v - 6

-42v + 30 - 3 = 3v - 18

add 30 and -3 together

-42v + 27 = 3v - 18

subtract 3v from both sides

-45v + 27 = -18

subtract 27 from both sides

-45v = -45

divide by -45 on both sides

v = 1

4 0

4 years ago

In how many ways could four people be divided into two groups of one person and one group of two people?

Andreyy89

Answer:

There are 4 ways that you could rearrange people

6 0

4 years ago

Suppose that weights of bags of potato chips coming from a factory follow a normal distribution with mean 12.8 ounces and standa

MA_775_DIABLO [31]

Answer:

std dev = 0.625

Step-by-step explanation:

Given that weights of bags of potato chips coming from a factory follow a normal distribution with mean 12.8 ounces and standard deviation .6 ounces.

We must change std deviation such that

P(X<12) =0.01

Mean would remain the same as 12.8 oz

From normal distribution score we can find

10th percentile is -1.28\

i.e. we must have

$12.8-1.28*s = 12\\1.28s = 0.8\\s = 0.625$

Std deviation should be 0.625

6 0

3 years ago

Solve the following 2x/3 - 2x/4 + 3x/12 = 20

Mrac [35]

X=48 please let me know if this helps

8 0

3 years ago