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3 years ago

PLEASE HELP AND ANSWER NOW :((

Mathematics

1 answer:

kati45 [8]3 years ago

7 0

I believe the answer is the third option that Bella saves more per chore than Sweet T. Thi is because if you put each number of chores Sweet T has done into Bella's equation Bella saves more each time.

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Finding the interpolating polynomial for the function

zhenek [66]

Answer:

f(x) = x^3 -2x^2 -3x +7

Step-by-step explanation:

Cubic polynomial regression using your favorite tool (graphing calculator, spreadsheet, or web site) will tell you the interpolating polynomial is ...

f(x) = x^3 -2x^2 -3x +7

_____

You can use Lagrange polynomial interpolation. It gives the function as the sum of four factored cubics:

$f(x)=3\cdot\dfrac{(x-2)(x-3)(x-4)}{(1-2)(1-3)(1-4)}+1\cdot\dfrac{(x-1)(x-3)(x-4)}{(2-1)(2-3)(2-4)}+\\\\\text{ }\qquad7\cdot\dfrac{(x-1)(x-2)(x-4)}{(3-1)(3-2)(3-4)}+27\cdot\dfrac{(x-1)(x-2)(x-3)}{(4-1)(4-2)(4-3)}$

Or, you can write equations for the coefficients a, b, c, d of ...

ax^3 +bx^2 +cx +d = f(x)

These would be ...

a + b + c + d = 3

8a +4b +2c +d = 1

27a +9b +3c +d = 7

64a +16b +4c +d = 27

Your friendly linear equation solver will tell you ...

(a, b, c, d) = (1, -2, -3, 7) . . . matches the equation shown above

6 0

3 years ago

A small town has two local high schools. High School A currently has 800 students and is projected to grow by 55 students each y

Neko [114]

Answer:

Step-by-step explanation:

6 0

3 years ago

Plssss i need help rn

wariber [46]

Answer:

Step-by-step explanation:

(x₁ , y₁) = (-1 , -2) & (x₂ , y₂) = (3 , 10)

$Slope =\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

$= \frac{10-[-2]}{3-[-1]}\\\\=\frac{10+2}{3+1}\\\\=\frac{12}{4}\\\\=4$

m = 4

y - y₁ = m (x - x₁)

y - [-2] = 4(x - [-1])

y + 2 = 4(x + 1)

y + 2 = 4x + 4

y = 4x + 4 - 2

y = 4x + 2

8 0

3 years ago

Help plz. I can’t do this

Andrews [41]

The answer to this question is 7x

3 0

4 years ago

Write an addition expression to describe the situation. Then find the sum and select the correct answer below. A hiker starts at

Artist 52 [7]

Answer:

(200+1,500) - 500 = 1,200 ft

Step-by-step explanation:

the hiker started at 200 ft then went 1500 more feet. (add it up) Then, she descends (goes down) 500 feet. So let's subtract 500 feet from the sum of 200 and 1500. ( (200+1500 equals 1700, then subtract 500 which will be 1200.) ) So, she is 1200 feet above sea level during the 10 minute break.

♡ Hope it helps♡

3 0

3 years ago