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TEA [102]
3 years ago
8

- Katrina practices violin 4 times per

Mathematics
1 answer:
Darina [25.2K]3 years ago
5 0
Katrina practices 4 hours a week.

Jeremy practices 2 hours and 15 minutes a week.

Answer Katrina practices more than Jeremy by 1 hour and 48 minutes
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Factor the polynomial.
mixer [17]

Answer:

Final answer is choice B. (5x-2y)^2

Step-by-step explanation:

We need to factor the given expression 25x^2-20xy+4y^2

25x^2-20xy+4y^2

=25x^2-10xy-10xy+4y^2

=5x(5x-2y)-2y(5x-2y)

=(5x-2y)(5x-2y)

=(5x-2y)^2

Hence final answer is choice B. (5x-2y)^2

6 0
2 years ago
HELP ASAP !! <br><br><br> What is the range of the function represented by the graph ?
finlep [7]

Answer:

b.

Step-by-step explanation:

The range means the values of y and in this graph, the values of y are 1,2,3 and 4.

4 0
3 years ago
Expand and simplify (2c+1)(2c+3)
Mandarinka [93]
The answer would be 4c^2+8c+3

The arrow stands for squared off you didn’t already know but these are very easy to solve because you just multiply it out
6 0
2 years ago
Find the length of AB. Leave
vovikov84 [41]

Answer:

<em>AB = 3π</em>

Step-by-step explanation:

<em>See attachment for correct format of question.</em>

Given

From the attachment, we have that

θ = 20°

Radius, r = 27

Required

Find length of AB

AB is an arc and it's length can be calculated using arc length formula.

Length = \frac{\theta}{360} * 2\pi r

<em>Substitute 20 for θ and 27 for r</em>

Length = \frac{20}{360} * 2\pi *27

Length = \frac{20 * 2\pi * 27}{360}

Length = \frac{1080 \pi}{360}

Length = 3\pi

Hence, the length of arc AB is terms of π is 3π

3 0
3 years ago
What is the value of x when the richter scale rating scale is 8.4?
Vsevolod [243]

The value of x when the richter scale rating scale is 8.4 is 251188643.151

<h3>What is a richter scale?</h3>

A richter scale is a numerical scale that is used for expressing the magnitude of an earthquake in a geographical area

<h3>How the richter scale works?</h3>

The richter scale takes the amplitude of the earthquake's largest seismic as an input and calculate (and display) the magnitude of an earthquake in the geographical area using a logarithmic function

<h3>How to determine the value of x?</h3>

The formula of a richter scale is expressed as:

log(x) = n

Where n represents the scale rating of the scale

In this case, n = 8.4.

So, we have:

log(x) = 8.4

Express as an exponent

x = 10^8.4

Evaluate the exponent

x = 251188643.151

Hence, the value of x when the richter scale rating scale is 8.4 is 251188643.151

Read more about richter scale rating at

brainly.com/question/19799610

#SPJ1

7 0
1 year ago
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