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ollegr [7]
2 years ago
13

There are 928 possible words for a spelling bee. If Levi studies 40 words per day, how long will he take to study all of the wor

ds?
Mathematics
1 answer:
LUCKY_DIMON [66]2 years ago
4 0
The answer is 24 days for this question
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What is the fuction for the graph?
Andrews [41]

The <em>piecewise defined</em> function is formed by the following three functions: y = 40, for 0 ≤ x < 15, y = 0.0425 · x² - 3.8 · x + 87.438, for 15 ≤ x < 65 and y = 0.4 · x - 6, for x ≥ 65.

<h3>What is the piecewise defined function behind the graph?</h3>

In this problem we have a <em>piecewise defined</em> function formed by three functions: (i) <em>Linear</em> equation, (ii) <em>Quadratic</em> equation, (iii) <em>Linear</em> equation. The <em>first</em> function is y = 40, for 0 ≤ x < 15.

The <em>second</em> function can be found based on the knowledge of three points:

y = a · x² + b · x + c

(x₁, y₁) = (15, 40)

40 = 225 · a + 15 · b + c

(x₂, y₂) = (45, 2.5)

2.5 = 2025 · a + 45 · b + c

(x₃, y₃) = (65, 20)

20 = 4225 · a + 65 · b + c

And the <em>quadratic</em> equation is y = 0.0425 · x² - 3.8 · x + 87.438, for 15 ≤ x < 65.

And the <em>latter linear</em> equation is:

y = m · x + b

m = (30 - 20)/(90 - 65)

m = 0.4

And the x-intercept is:

b = y - m · x

b = 20 - 0.4 · 65

b = - 6

The <em>linear</em> equation is y = 0.4 · x - 6, for x ≥ 65.

The <em>piecewise defined</em> function is formed by the following three functions: y = 40, for 0 ≤ x < 15, y = 0.0425 · x² - 3.8 · x + 87.438, for 15 ≤ x < 65 and y = 0.4 · x - 6, for x ≥ 65.

To learn more on piecewise defined functions: brainly.com/question/12561612

#SPJ1

7 0
1 year ago
PLEASE SHOW WORK FOR BRAINLIEST!!
sergejj [24]

The picture would change the distance from the bridge, the ground, and the jumper.

6 0
2 years ago
What is the area of the semicircle in square feet (use 3.14 for π.) helpp due in 21 minutes​
Elden [556K]

Answer:

14.13

Step-by-step explanation:

use the radius, 3 squared

so 3 x 3 = 9

9 x 3.14 = 28.26

28.26 / 2 ( because it is a semicircle) = 14.13

7 0
3 years ago
Please help me?i don’t want to fail
Kobotan [32]

Answer:

8.

<u>9y-3y=6</u>

-4x-(-5x)=1

the slope is 6

9.

you start at the 0 axis and go up 3 on the y.Once you did that you want to go up 2 on the y axis then 3 to the right on the x axis,then go up 2 then 3 to the right.

Step-by-step explanation:

8 0
2 years ago
The value of x in the proportion 1/2:2/3 = 3/4:x is
Ratling [72]
To change 1/2 to 3/4 you multiply by 3/2 so then multiply 3/4 by 3/2 and you get 6/6 or 1...the answer is 1
3 0
2 years ago
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