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3 years ago

12

mrs tart takes a survey she discovers 60% of her students prefer using pens over pencils in class. if 12 students in Mrs. Tart c

lass prefer to use pens how many total students are in mrs. tarts class

2 answers:

Rudik [331]3 years ago

8 0

20 ? i think that is right

mojhsa [17]3 years ago

5 0

Answer:

20

Hope this helps :D

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A bag had 7 orange rocks , 6 green rock , 1 white rock ,7 black rocks , and 2 yellow you randomly pull a rock from the bag ,keep

daser333 [38]

Answer:

$Probability = \frac{7}{253}$

Step-by-step explanation:

Given

$Orange = 7$

$Green = 6$

$White = 1$

$Black = 7$

$Yellow = 2$

Required

Probability of selecting a yellow then orange rock

From the question, we understand that the probability is that of without replacement.

Since the yellow, is first picked.

We need to determine the probability of picking a yellow rock, first.

$P(Yellow) = \frac{n(Yellow)}{Total}$

$P(Yellow) = \frac{2}{7 + 6 + 1 + 7 + 2}$

$P(Yellow) = \frac{2}{23}$

The rock has reduced by 1;

Next is to determine the probability of picking an orange rock

$P(Orange) = \frac{n(Orange)}{Total - 1}$

$P(Orange) = \frac{7}{7 + 6 + 1 + 7 + 2- 1}$

$P(Orange) = \frac{7}{22}$

The required probability is calculated as thus:

$Probability = P(Yellow) * P(Orange)$

$Probability = \frac{2}{23} * \frac{7}{22}$

$Probability = \frac{14}{506}$

$Probability = \frac{7}{253}$

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3 years ago

Find the rate of change:<br> Time: 9:00. 10:00. 11:00. 12:00<br> Temperature: 60. 62. 64. 66

tia_tia [17]

The rate of change is +2 degrees per hour (an increase of 2 degrees per hour)

3 0

3 years ago

I NEED HELP LIKE NOW!!!

Alex73 [517]

Answer:

C= b+ 0. 7

Step-by-step explanation:

C= b+ 0. 7

C= b+ 0. 7

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3 years ago

3500 calories for 6 servings of pie ________ calories per serving is what?

OleMash [197]

Answer:

583 rounded to the nearest whole number

Step-by-step explanation:

other wise 583.3333333333333333333333333333

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2 years ago

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Which number should go in the ?<br> 5 + 3 = 3 + 0<br> 5<br> 3<br> 8

soldi70 [24.7K]

Answer:

the answer is 5

Step-by-step explanation:

because 5+3 is 8 and 3+0 is 3 so you need 5 so it can be equal.

hoped i helped

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3 years ago

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