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oksian1 [2.3K]
3 years ago
9

At a book fair, a tote bag costs $5 and any book b costs $3.50 each. Maria got a tote bag and some books, spending a total of $1

9.
Write an equation for this situation, and solve for the number of books b that she bought.
O $5 + $3.50b = $19, b = 4 books
O 5b + $3.50 = $19, b = 3.1 books
O $5 + $3.50b = $19, b = $4
O $3.50b - $5 = $19, b = $6.86
Mathematics
1 answer:
lyudmila [28]3 years ago
5 0
It’s $5 + $3.50b = $19, b= 4 books
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4x+7y=2<br> help . Pls.
solong [7]

Answer:

x = 2-7y over 4

Step-by-step explanation:

4x+7y=2

    -7y    -7y

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/4       /4

x=2 - 7y/4


6 0
3 years ago
Helpppp confused
Sveta_85 [38]

Not an expertise on infinite sums but the most straightforward explanation is that infinity isn't a number.

Let's see if there are anything we missed:

 ∞

 Σ  2^n=1+2+4+8+16+...

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We multiply (2-1) on both sides:

       ∞

(2-1)  Σ  2^n=(2-1)1+2+4+8+16+...

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And we expand;

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 Σ  2^n=(2+4+8+16+32+...)-(1+2+4+8+16+...)

n=0

But now, imagine that the expression 1+2+4+8+16+... have the last term of 2^n, where n is infinity, then the expression of 2+4+8+16+32+... must have the last term of 2(2^n), then if we cancel out the term, we are still missing one more term to write:

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 Σ  2^n=-1+2(2^n)

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If n is infinity, then 2^n must also be infinity. So technically, this goes back to infinity.

Although we set a finite term for both expressions, the further we list the terms, they will sooner or later approach infinity.

Yep, this shows how weird the infinity sign is.

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3 years ago
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Dmitrij [34]

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y²-4y+4 = -16x+48

y²-4y = -16x + 44

Hope it helped!

5 0
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Zolol [24]

Well the answer for the square root of 11

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and real number


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Y_Kistochka [10]

Answer:

1)rs.6000

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5 0
3 years ago
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