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1 year ago

12. A bag contains 12 red, 9 green and 5 black markers. If Cooper randomly selects 7 markers, how many

Mathematics

1 answer:

ASHA 777 [7]1 year ago

8 0

Answer:

Step-by-step explanation:

7 marks

6 same colors

from 12 red 6 same exactly the same

12 x 11 x 10 x 9 x7 x6

1 remainig

from 9 green 6 saem exactly the same

9 x 8 x 7 x 6 x5 x4

1 remaining

add the results above to get your final answer

26 markers in total

6 to be chosen of the same color from 7

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Allen has a 75 yard spool of yarn. He needs to cut the spool of yarn into 6 1/4

Gwar [14]

Answer:

B. 12 pieces

Step-by-step explanation:

75 / 6 1/4 or 75 / 6.25 = 12

4 0

3 years ago

Read 2 more answers

your brother is 1.3 your age. your sister is 6 years older tahn your brother.Your sister is 10 years old. Write and solve a equa

Papessa [141]

Answer:

My age is 12 years.

Step-by-step explanation:

Given:

Sister's age = 10 years

Let my age be x.

Now according to question;

my brother's age is 1/3 of my age

So brother's age = $\frac{1}{3}x$

Also according to question;

my sister is 6 years older than my brother;

Sister's age = $6+\frac{1}{3}x$

Also given Sister's age = 10 years

hence equation to find my age will be expressed as below;

$6+\frac{1}{3}x = 10\\\\\frac{1}{3}x = 10-6\\\\\frac{1}{3}x = 4\\\\\therefore x = 4\times3 = 12$

Brothers age = $\frac{1}{3}x=\frac{1}{3}\times12=4$

Hence my age is 12 years.

4 0

3 years ago

O+2a+b-2o-b+o so what is the answer

lana66690 [7]

Assuming O=o

group then add like terms

1o+2a+1b-2o-1b+1o=
1o+1o-2o+2a+1b-1b=
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3 years ago

The inside diameter of a randomly selected piston ring is a normally distributed random variable with mean 12 cm and standard de

victus00 [196]

Answer:

$x=12.07$

Step-by-step explanation:

From the question we are told that:

Mean $\=x =12cm$

Standard deviation $\sigma=0.04$

Significance level $\alpha=5\%=0.05$

Therefore

Confidence level $95\%=0.95$

From table $P(z$

Generally the equation for Z-score is mathematically given by

$z=\frac{x-\mu}{\sigma}$

$x=z\sigma+\mu$

$x=1.645*0.04+12$

$x=12.07$

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2 years ago

Find the percent increase of <br> 12 to 48

ss7ja [257]

Answer: 300% Increase

Step-by-step explanation: Lets write and solve a percent equation. First lets subtract 12 from 48 to get 36. 48 - 12 = 36

Now, write the equation. P = percent increase

36/12 x 100 = p

3 x 100 = p

300 = p

So, the percent increase is 300%

5 0

2 years ago