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3 years ago

In a coin puzzle, guantity refers to the

Mathematics

2 answers:

alukav5142 [94]3 years ago

6 0

Answer:

Number of coins.

Step-by-step explanation:

You mean quantity?

The amount of or number of items (in this case coins).

9966 [12]3 years ago

6 0

Balancing items -often coins- to determine which holds a different value, by using balance scales a limited number of times

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Leto [7]

Answer:

$\boxed{D. \: (f-g)(x) = {x}^{2} + 4x + 3}$

Given:

$f(x) =2 {x}^{2} - 5 \\ g(x) = {x}^{2} - 4x - 8$

To find:

$(f - g)(x) = f(x) - g(x)$

Step-by-step explanation:

$\implies(f - g)x = f(x) - g(x) \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = (2 {x}^{2} - 5) - ( {x}^{2} - 4x - 8) \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = (2 {x}^{2} - 5) + (- {x}^{2} + 4x + 8) \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 2 {x}^{2} - 5 - {x}^{2} + 4x + 8 \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 2 {x}^{2} - {x}^{2} + 4x - 5 + 8 \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = {x}^{2} + 4x + 8 - 5 \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = {x}^{2} + 4x + 3$

8 0

3 years ago

Jeff hikes 1/2 mile every 15 minutes, or 1/4 hour. Lisa hikes 1/3 mile every 10 minutes, or 1/6 hour. How far do they each hike

inessss [21]

Answer:

they each hike 2 miles

Step-by-step explanation:

Jeff: 15=1/2

*4 *4

60 min=2 miles

Lisa: 10=1/3

*6 *6

60 = 2

6 0

3 years ago

a lab uses negative numbers to describe a car moving backward on a road if the car was at -75.5 feet ,went forward 23 feet and t

never [62]

Did you that that God loves you and wants the best for you

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3 years ago

What is the period of a wave if the wavelength is 100 m and the speed is 200 m/s?

Iteru [2.4K]

It is A because I did 100 times 200 and I got 200,000

5 0

3 years ago

Read 2 more answers

The diameter of a round skating

Tema [17]

Answer: 47 meters

Step-by-step explanation:

The equation for the diameter of a circle is $C=d\pi$ , so we just multiply the diameter (15) by $\pi$ . $15\pi$ , or roughly 47.1238898038. Rounded to the nearest meter, 47 meters. Also, happy pi day!

7 0

3 years ago