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Step2247 [10]
2 years ago
12

Which of the following statements about variables is false? a. Mathematical operations can be performed on a variable. b. The va

riable will always be the letter x. c. A mathematical statement can include more than one variable. d. A variable is a letter used to represent an unknown quantity.
Mathematics
1 answer:
tamaranim1 [39]2 years ago
6 0

Answer:

  b. The variable will always be the letter x (false)

Step-by-step explanation:

Variables can be any letter or symbol. The letter x is often used as a variable, but that is not the only choice. Many formulas, for example, make use of variables that have letters reminding you what they stand for.

For example, the formula ...

  A = 1/2(b1 +b2)h

uses the variables A, b1, b2, and h to represent area, base-1, base-2, and height, respectively. The letter x is not used at all.

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A manufacturer of bicycles has determined that 550 bikes per month will be sold at a price of $250. At a price of $150, it is es
iogann1982 [59]

750 bikes would be sold for $350

Let x represent the number of bikes sold per month and y represent the price.

550 bikes are sold at a price of $250, this can be represented by (550, 250). Also, 750 bikes is sold at a price of $150, hence it is represented by (750, 150)

A linear function is represented by:

y = mx + b

m is the slope, b is the y intercept.

Therefore the function is:

y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)\\\\y-250=\frac{150-250}{750-550}  (x-550)\\\\y=\frac{1}{2}x-25

The number of bikes sold for $350 is:

350 = (1/2)x - 25

x = 750

Therefore 750 bikes would be sold for $350

Find out more at: brainly.com/question/13911928

3 0
2 years ago
Find the solution set the this inequality 2x -3 > 2x-5/2
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Answer:

0> 1/2

Step-by-step explanation:

5 0
1 year ago
Solve the following, round to 2 decimal places. <br>36.67 ÷ 12​
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So 36.67\12= 3.055833 and the 3 repeats so round up the 5 to get 3.06
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5 0
3 years ago
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Simplify the given expression.<br> (3x+8)(2x+6)
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(3x+8)(2x + 6)

6x^2+18x+16x+42
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using the foil method, you can expand the given expression. It is already in simplified form with the given (3x+8)(2x+6)
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3 years ago
Find the first, fourth, and tenth terms of the arithmetic sequence described by the given rule.
vekshin1

Simplify:

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Put n = 1, n = 4 and n = 10 to the expression:

A(1) = 6(1) - 12 = 6 - 12 = -6

A(4) = 6(4) - 12 = 24 - 12 = 12

A(10) = 6(10) - 12 = 60 - 12 = 48

<h3>Answer:</h3><h3>first term = -6, fourth term = 12 and tenth term = 48.</h3><h3>-6, 12, 48</h3>
7 0
3 years ago
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