MATHEMATICS
MIDDLE SCHOOL

Answer: The greatest common factor (GCF) of 21 and 84 is 21.

The GCF is the largest number by which both numbers can be divided. Between 21 and 84, it is 21 because 21/21=1 and 84/21=4.

The GCF is the largest number by which both numbers can be divided. Between 21 and 84, it is 21 because 21/21=1 and 84/21=4.

Answer: 17 greatest factor of 84 and 21 greatest factor is 21

MIDDLE SCHOOL

Lela purchased three mechanical pencils and a notebook that cost five dollars per purchase totaled $11 how much was each pencil use P to represent the cost of each pencil

The cost of each pencil is $2.

What is a word problem?A word problem is a verbal description of a problem situation. It consists of few sentences describing a 'real-life' scenario where a problem needs to be solved by way of a mathematical calculation.

For the given situation,

Number of pencils = 3

Number of notebook = 1

Cost of a notebook = $5

Total cost = $11

Let number of pencil be p.

Lela purchased three mechanical pencils and a notebook is

⇒

⇒

⇒

⇒

⇒

Hence we can conclude that the cost of each pencil is $2.

Learn more about word problems here

brainly.com/question/20594903

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Answer: 3p+5=11

Step-by-step explanation:

3p+5=11

-5 -5

3p=6

3p/3=6/3

P=2

$2

MIDDLE SCHOOL

If ƒ (x ) = 3x 2 - x, find ƒ (-2).

10

14

38

Answer:

Answer is 14.

Step-by-step explanation:

f(-2)=3*(-2)^2 - (-2)

=3*4+2

=12+2

=14

Answer:

The answer is 14.

Explanation:

f(-2)=3*(-2)^2 - (-2)

=3*4+2

=12+2

=14

COLLEGE

The midterm exam in Econ 2201 consisting of 50 students was worth 100 points. The top 5 scores were 75, 81, 88, 92, and 94. Find the 95th percentile of the score distribution.

a. 86.05

b.89.8

c. 90.2

d. 91.05

e. 92

Answer:

Step-by-step explanation:

Given that the midterm exam in Econ 2201 consisting of 50 students was worth 100 points. The top 5 scores were 75, 81, 88, 92, and 94.

We have to find the 95th percentile of the score distribution.

For this purpose let us arrange in ascending order

75, 81, 88, 92, 94

We must have 95% below the value we find out so that it would be the 95th percentile

i.e. here 95% means =

4.75 entries should be below that entry

We see that 80% entries are below 92 and 100% below 95

To find 95%

For 20 % difference differnce in score = 94-92 =2

Hence for 15% difference difference in score =

95th percentile= 92+1.5 = 93.5

HIGH SCHOOL

Find the number of possible negative real zeros for f(x)=x^3-4x^2-3x-9.

Please help:)

If its a graph: Y = -0.5977352 or X = 0.6804

Remainder Theorem: answer 10 is remainer & NO x - 1 Not a factor

or this

2 or 0

Remainder Theorem: answer 10 is remainer & NO x - 1 Not a factor

or this

2 or 0

MIDDLE SCHOOL

The ratio of pencils to erasers is 4:1 if there are 20 pencils how many erasers are there?

It is 5 because you have to multiply by 5 by 4 and get 20 when you multiply by 5×1 and get 5

MIDDLE SCHOOL

Solve the equation 15.625 = s3 to find the length of one side of the container

The answer to the question is 5.208 with a repeating 3

COLLEGE

Find the derivative of f(t)=2√t - 2/√t

The answer is t=1.

Hope this helps.

Hope this helps.

Answer:32

Step-by-step explanation:

COLLEGE

Find the value of a in the equation

5/a + 3 = 3/a - 2

The correct answer is a =9.5

HIGH SCHOOL

2x+y=15

y=3x

I think it's substitution