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grigory [225]
3 years ago
11

If one term of a proportion is not known, what can be used to find the value of that term? a. substitution c. cross-multiplicati

on b. graphing d. adding all the numbers together Please select the best answer from the choices provided
Mathematics
1 answer:
Elza [17]3 years ago
5 0
Hint: Selecting<span> "AUTO" in the variable box </span>will<span> make the calculator automatically solve for the first variable it sees. Quick-Start Guide. The calculator uses </span>cross multiplication<span> to convert </span>proportionsinto equations which are then solved using ordinary equation solving methods. Be sure to enter something in each input box<span> ...</span>
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Suppose that the number of a certain type of computer that can be sold when its price is P (in dollars) is given by a linear fun
Scilla [17]

Answer:

a) N(P) = -6P + 16000

b) slope = -6 computers per dollar

That means the number of computer sold reduce by 6 per dollar increase in price.

c) ∆N = -660 computers

Step-by-step explanation:

Since N(P) is a linear function

N(P) = mP + C

Where m is the slope and C is the intercept.

Case 1

N(1000) = 10000

10000 = 1000m + C ....1

Case 2

N(1700) = 5800

5800 = 1700m + C ....2

Subtracting equation 1 from 2

700m = 5800 - 10000

m = -4200/700

m = -6

Substituting m = -6 into eqn 1

10000 = (-6)1000 + C

C = 10000+ 6000 = 16000

N(P) = -6P + 16000

b) slope = -6 computers per dollar

That means the number of computer sold reduce by 6 per dollar increase in price.

Slope is the change in number of computer sold per unit Change in price.

c) since slope m = -6 computers per dollar

∆P = 110 dollars

∆N = m × ∆P

Substituting the values,

∆N = -6 computers/dollar × 110 dollars

∆N = -660 computers.

The number of computer sold reduce by 660 when the price increase by 110 dollars

7 0
4 years ago
What is the square root of 4
Nina [5.8K]

Answer:

The square root of 4 is 2 because 2 times itself produces 4

2 * 2 = 4

Step-by-step explanation:

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3 years ago
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What is the value of -3to the power of 4?<br><br><br>-12<br><br>81<br><br>12<br><br>-81
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81

Step-by-step explanation:

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-34.78/-3.7 need help please help ASAP
nataly862011 [7]

Answer:

9.4

Step-by-step explanation:

4 0
3 years ago
I need some one to help me!! <br><br> Is (7, 0) a solution to the equation y = x − 7?
Marianna [84]

Answer:

Yes

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

Coordinates (x, y)

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

Point (7, 0)

Equation y = x - 7

<u>Step 2: Find</u>

  1. Substitute in point [Equation]:                                                                         0 = 7 - 7
  2. Subtract:                                                                                                            0 = 0

Since 0 = 0 is true, then it would be a solution to the equation.

3 0
3 years ago
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