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Paraphin [41]
3 years ago
15

33 folders cost $ 2.91 $2.91dollar sign, 2, point, 91. Which equation would help determine the cost of 2 22 folders? Choose 1 an

swer: Choose 1 answer: (Choice A) A 2 $ 2.91 = x 3 $2.91 2 ​ = 3 x ​ start fraction, 2, divided by, dollar sign, 2, point, 91, end fraction, equals, start fraction, x, divided by, 3, end fraction (Choice B) B 2 x = 3 $ 2.91 x 2 ​ = $2.91 3 ​ start fraction, 2, divided by, x, end fraction, equals, start fraction, 3, divided by, dollar sign, 2, point, 91, end fraction (Choice C) C x 2 = 3 $ 2.91 2 x ​ = $2.91 3 ​ start fraction, x, divided by, 2, end fraction, equals, start fraction, 3, divided by, dollar sign, 2, point, 91, end fraction (Choice D) D 2 x = $ 2.91 3 x 2 ​ = 3 $2.91 ​ start fraction, 2, divided by, x, end fraction, equals, start fraction, dollar sign, 2, point, 91, divided by, 3, end fraction (Choice E) E None of the above
Mathematics
2 answers:
Rama09 [41]3 years ago
8 0

Answer:

Option B. start fraction, 2, divided by, x, end fraction, equals, start fraction, 3, divided by, dollar sign, 2, point, 91, end fraction

Step-by-step explanation:

<u><em>The correct question is</em></u>

3 folders cost $2.91 which equation would help determine the cost of 2 folders

we know that

3 folders cost $2.91

so

by proportion

Determine the cost of 2 folders

Let

x ----> the cost of 2 folders

\frac{2}{x}=\frac{3}{2.91}

solve for x

3x=2(2.91)

x=\$1.94

therefore

The cost of 2 folders is $1.94

iren [92.7K]3 years ago
7 0

Answer:

answer b

Step-by-step explanation:

khan academy

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It takes a word processor 26 minutes to word process and spell check 6 pages. Find how long it takes her to word process and spe
zalisa [80]

Answer:

It takes the word processor 117 minutes to word process and spell check 27 pages.

Step-by-step explanation:

With the information provided, you can use a rule of three to find how long it would take to word process and spell check 27 pages given that it takes 26 minutes to word process and spell check 6 pages:

6 pages   →  26 minutes

27 pages  →          x

x=(27*26)/6=117 minutes

According to this, the answer is that it takes the word processor 117 minutes to word process and spell check 27 pages.

6 0
3 years ago
Perform the indicated opera<br> 6) g(n)= n2 - 1<br> h(n)= 4n+1<br> Find (g. h)n)
DaniilM [7]

(g.h)(n)\,\,is\,\,4n^3+n^2-4n-1\\

Step-by-step explanation:

We are given:

g(n)=n^2-1\\h(n)=4n+1

We need to find (g.h)(n)

Finding (g.h)(n)

(g.h)(n)=g(n).h(n)\\ (g.h)(n)=(n^2-1)(4n+1)\\ (g.h)(n)=n^2(4n+1)-1(4n+1)\\ (g.h)(n)=4n^3+n^2-4n-1\\

So, (g.h)(n)\,\,is\,\,4n^3+n^2-4n-1\\

Keywords: Composite Function

Learn more about Composite Function at:

  • brainly.com/question/10772025
  • brainly.com/question/4939434
  • brainly.com/question/2723982

#learnwithBrainly

6 0
3 years ago
Kofi and kweku are two brothers. Kofi is older than kweku. Given that kofi's age is (5x-4) years and kweku's age is (2x+1) years
diamong [38]

Answer:

Kindly check explanation

Step-by-step explanation:

Given the details :

Kofi is older than kweku

kofi's age = (5x-4) years

kweku's age = (2x+1) years

a. write down an expression, interns of x,for how much old is Kofi than kweku

Equate the ages of Kofi and kweku

(5x - 4) = (2x + 1)

5x - 4 = 2x + 1

5x - 2x = 1 + 4

3x = 5

3x - 5

B.) if Kofi is tens years older than kweku, find the value of x and the ages of Kofi and kweku

Then,

(5x-4) = (2x + 1) + 10

5x - 4 = 2x + 1 + 10

5x - 2x = 1 + 10 + 4

3x = 15

x = 5

Kofi's age : 5x - 4

5(5) - 4 = 25 - 4 = 21 years

Kweku's age : (2x + 1)

2(5) + 1 = 10 + 1 = 11 years

6 0
3 years ago
Prove that 25^9+5^17is divisible by 30
VLD [36.1K]

Answer:

proof is below

Step-by-step explanation:

Answer:

25^9 + 5^17=

=2^18 + 5^17

=5^17(5+1)

=5^17×6

=5^16×30  is divisible by 30

6 0
2 years ago
Evaluate f(7) *<br> f (x) = –2x² + 4
Firdavs [7]
Input 7 for every x so
f(7) = -2 (7)^2 +4
f(7) = -2(49) +4
f(7) = -98 +4
f(7) = -94
6 0
3 years ago
Read 2 more answers
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