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mamaluj [8]
2 years ago
15

Please help Q15!!!it will mean a lot +20 points

Mathematics
1 answer:
SashulF [63]2 years ago
4 0

Answer:

c seems right

Step-by-step explanation:

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PLEASE THIS IS URGENT​
andrezito [222]

Answer:

the corect answer is C

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Why is C the answer for this question?
Grace [21]

Step-by-step explanation:

A left Riemann sum approximates a definite integral as:

\int\limits^b_a {f(x)} \, dx \approx \sum\limits_{k=1}^{n}f(x_{k}) \Delta x \\where\ \Delta x = \frac{b-a}{n} \ and\ x_{k}=a+\Delta x \times (k-1)

Given ∫₂⁸ cos(x²) dx:

a = 2, b = 8, and f(x) = cos(x²)

Therefore, Δx = 6/n and x = 2 + (6/n) (k − 1).

Plugging into the sum:

∑₁ⁿ cos((2 + (6/n) (k − 1))²) (6/n)

Therefore, the answer is C.  Notice that answer D would be a right Riemann sum rather than a left (uses k instead of k−1).

8 0
3 years ago
I have one more question before im done so please help and have a good day.
3241004551 [841]

Answer:

  • See below

Step-by-step explanation:

<h3>Part A</h3>

<u>Solve the equation:</u>

  • 6x² + 48x + 120 = 0
  • x² + 8x + 20 = 0
  • x² + 8x + 16 + 4 = 0
  • (x + 4)² + 4 = 0
  • (x + 4)² = - 4

The left side is positive and right side is negative so no solution

<h3>Part B</h3>

There is no intercession with the x-axis, the graph of the function is entirely above the x-axis.

It means the diver won't reach the bottom of the lake

6 0
2 years ago
If A = {( x , y ): (2, -2), (4, -1), (6, 0), . . .}, complete the rule for set A . y=
Papessa [141]
The answer is y=1/2x-3
8 0
2 years ago
HELLOOOOOOOOOOOOOO WASUPPPPPPP
bulgar [2K]

hii........

nothing just studying

4 0
2 years ago
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