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4 years ago

5

Why is it important to represent these unknown values with variables

1 answer:

balu736 [363]4 years ago

7 0

As created (the concept) by Descartes, a variable is an alphabetic character used to represent unknown values. They are extremely useful when solving algebraic calculations allowing us to solve a range of calculations in simpler computations.

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bryan has some 3 cent stamps and some 4 cent stamps. what is the least number of stamps he can combine so the value of the stamp

SashulF [63]

Answer:

The least number of stamps required is $9$

Step-by-step explanation:

Let the number of $3$ cent stamps be $x$ and $4$ cent stamps be $y$

We have

$3x+4y=33$

The minimum number is obtained when more $4$ cent stamps are used

Here $y$ cannot be greater than $8$ since $\frac{33}{4}$

Substitute $y=8$

$3x+4\times 8=33\\\\3x=1\\\\x=\frac{1}{3}$

Not possible since $x$ is not a fraction

Substitute $y=7$

$3x+4\times 7=33\\\\3x=5\\\\x=\frac{5}{3}$

Not possible since $x$ is not a fraction

Substitute $y=6$

$3x+4\times 6=33\\\\3x=9\\\\x=\frac{9}{3}\\\\=3$

Possible

Hence minimum number of stamps is

$=x+y\\\\=3+6\\\\=9$

5 0

3 years ago

Can y'all help me with all of them plz

Elena-2011 [213]

10. 150
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3 years ago

Hank and Debra each own two milking cows

Minchanka [31]

Is there supposed to be a picture attached?

4 0

3 years ago

Representative is paid the greater

vivado [14]

Building and solving an inequality, it is found that at a volume of sales of $11,875 he will start to earn more from the commission based compensation.

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We want to find how much in dollars he has to sell such that 8% of this amount is greater than $950.
Supposing he sells $x, 8% of this is represented by 0.08x. We want it to be greater than $950, thus, the inequality is:

$0.08x > 950$

Now we solve the inequality, similarly to how we would solve an equality.

$x > \frac{950}{0.08}$

$x > 11875$

At a volume of sales of $11,875 he will start to earn more from the commission based compensation.

A similar problem is given at brainly.com/question/17248342

6 0

3 years ago

Which phrase best describes the translation from the graph y=2(x-15)2 +3 to the graph of y=2(x-11)² +3?

Arlecino [84]

Answer: 4 units to the right

Step-by-step explanation:

i took the quiz

5 0

2 years ago