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Romashka-Z-Leto [24]
3 years ago
12

What is the percentage of change from $7.50 to $9.00

Mathematics
1 answer:
DaniilM [7]3 years ago
7 0
The percentage of Chang from 7.50 to 9.00 is 20
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HELPPPPPPPPPPPPPPPPPPPPPPPP
Tems11 [23]

Answer:

pofit made in dollars is the "independent' variable

the equation is y=4x

7 0
3 years ago
Write an exponential function to represent both of these
Hunter-Best [27]

Answer:

1. y = 2(3)^x \ or \ y = 6^x

2. y = 10(2)^x \ or \ y = 20^x

Step-by-step explanation:

1. Solution for 1st part.

Given:

Ben shared his post with 2 friends

Each of those friends shares with 3 more every day.

the number of shares triples every day.

From the data given above, we can make the following:

N(0) = 2 \times 3^0 = 2\\N(1) = 2 \times 3^1 = 6\\N(2) = 2 \times 3^2 = 18

An exponential function is represented by:

y = ab^x

where a is the initial value and b is the growth rate.

The exponential function for this case would be:

y = 2(3)^x \ or \ y = 6^x

2. Solution for part 2.

Given:

Carter shared his post with 10 friends.

each share with only 2 people each day.

From the data given above, we can make the following:

N(0) = 10 \times 2^0 = 10\\N(1) = 10 \times 2^1 = 20

An exponential function is represented by:

y = ab^x

where a is the initial value and b is the growth rate.

The exponential function for this case would be:

y = 10(2)^x \ or \ y = 20^x

3 0
3 years ago
0.45 written as a common fraction, in its simplest form, is<br> ​
IceJOKER [234]

The Answer is : \frac{9}{20}

Step-by-step explanation:

5 0
3 years ago
Use the discriminant to describe the roots of each equation. Then select the best description.
Misha Larkins [42]

Answer:

see explanation

Step-by-step explanation:

Given a quadratic equation in standard form

ax² + bx + c = 0 : a ≠ 0, then

The nature of it's roots can be determined by the discriminant

Δ = b² - 4ac

• If b² - 4ac > 0 then roots are real and distinct

• If b² - 4ac = 0 then roots are real and equal

• If b² - 4ac < 0 then roots are not real

For x² - 4x + 4 = 0 ← in standard form

with a = 1, b = - 4, c = 4, then

b² - 4ac = (- 4)² - (4 × 1 × 4) = 16 - 16 = 0

Hence roots are real and equal

This can be shown by solving the equation

x² - 4x + 4 = 0

(x - 2)² = 0

(x - 2)(x - 2) = 0, hence

x - 2 = 0 or x - 2 = 0

x = 2 or x = 2 ← roots are real and equal

8 0
3 years ago
Can someone help me here NONSENSE=REPORT<br><br>topic: Circles and its Concept​
Zina [86]

Detailed Answer:


Diameter = Radius * 2

Radius = Diameter/2


a) 64cm

r = 32 cm

Diameter = 32 * 2 = 64cm


b) 25.2 m

r = 12.6 m

Diameter = 12.6 * 2 = 25.2 m


c) 29.5 in

r = 14 3/4 = 14.75

Diameter = 14.75 * 2 = 29.5 in


d) 64 cm

r = √32 cm^2 = 32 cm

Diameter = 32 * 2 = 64 cm

e) 49.32 ft

r = 24.66 ft

Diameter = 24.66 * 2 = 49.32 ft

8 0
3 years ago
Read 2 more answers
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