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Novosadov [1.4K]
3 years ago
13

You buy magazines for $5 and books for $10. You spent a total of $100. Let x represent the number of magazines and y represent t

he number of erasers. Write an equation to represent the situation.

Mathematics
1 answer:
bagirrra123 [75]3 years ago
8 0
The answer would be 10x+5y=100
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<img src="https://tex.z-dn.net/?f=%5Cfrac%20%7B%2018%20%5E%20%7B%20n%20%2B%201%20%7D%20%5Ctimes%203%20%5E%20%7B%201%20-%20n%20%7
Rufina [12.5K]

Answer:

4 \times  {3}^{n + 3}

Step-by-step explanation:

\frac{ {18}^{n + 1}  \times {3}^{1 - n}}{  {2}^{n - 1}  }

\frac{ {3}^{2n + 2}  \times  {2}^{n + 1}  \times  {3}^{1 - n} }{ {2}^{n - 1} }

{3}^{2n + 2}  \times  {2}^{2}  \times  {3}^{1 - n}

{3}^{2n + 2}  \times 4 \times  {3}^{1 - n}

= 4 \times  {3}^{n + 3}

8 0
3 years ago
Read 2 more answers
A 5-kilogram bag of cement costs $18.15. What is the unit price?
Gnom [1K]

Answer:3.63

Step-by-step explanation:because if we divide 18.15 by 5 is equal 3.63.

3 0
3 years ago
I need help please and thank you
NemiM [27]

Answer:

7x-32=3

32+3= 35

7x=35

35/7

x=5

the answer is 5

Plz mark as brainliest

6 0
3 years ago
Read 2 more answers
The length of a rectangle is 5 times larger than x. The width is 4 cm less than the length. The perimeter is at least 96 cm. Wha
Ede4ka [16]

We know that the perimeter of a rectangle = 2(l + w)

l = length

w = width

In our problem,

l = 5x

w = 5x - 4

Let's create an inequality to help us solve this problem.

2(5x + (5x - 4)) ≥ 96

Let's start off by simplifying the terms inside the parentheses.

2(10x - 4) ≥ 96

Distribute the 2

20x - 8 ≥ 96

Add 8 to both sides.

20x ≥ 104

Divide both sides by 20

x ≥ 5.2

Let's plug 5.2 into x for our length and width.

Length = 5x = 5(5.2) = 26 cm

Width = 5x - 4 = 5(5.2) - 4 = 26 - 4 = 22 cm

The smallest possible dimensions for the rectangle are, length = 26 cm and width = 22 cm  

6 0
4 years ago
Read 2 more answers
Solve.
BigorU [14]

Answer:

x= -2.4 or -14/5

8 0
2 years ago
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