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Alenkinab [10]
3 years ago
6

Question 5 (1 point)

Mathematics
1 answer:
Natalka [10]3 years ago
4 0
Choice B would be the correct answer. 3 x 12 will give you 36, and 3 x 3 will give you 9. Therefore 36 + 9 = 3(12+3). I hope this helps
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How do i solve thissss (mainly the question on the bottom)
Ymorist [56]

a)

well done

b)

well, a function for a relationship means, the x-coordinates must not repeat in a set, namely that for every "y" there must be a unique "x" coordinate, no X-REPEATS.

so for example in a relation that say is { (3, 4) , (5, 4) , (7, 4) , (10, 11) }, we do have y-coordinates repeated, but for a function that doesn't matter, our x-coordinates are not repeated thus, it's a function.

in this case, let's see the relationship set, just a few points { (3,5) , (3,6) , (3,8) , (6,10)}, well darn, we have 3 repeated three times in the x-coordinate slots, therefore is not a function, just a relation.

6 0
3 years ago
Which number produces an irrational number when added to 0.5?
Andru [333]
It would be the square root of 3
5 0
3 years ago
If f(x) = 3x2 − 8x, 0 ≤ x ≤ 3, evaluate the Riemann sum with n = 6, taking the sample points to be right endpoints.
denis23 [38]

Split up the interval [0, 3] into 6 subintervals,

[0, 1/2], [1/2, 1], [1, 3/2], [3/2, 2], [2, 5/2], [5/2, 3]

The right endpoints are given by the arithmetic sequence,

r_i=0+\dfrac i2=\dfrac i2

with 1\le i\le6.

We approximate the integral of f(x) on the interval [0, 3] by the Riemann sum,

\displaystyle\int_0^3f(x)\,\mathrm dx=\sum_{i=1}^6f(r_i)\Delta x_i

\displaystyle=\frac{3-0}6\sum_{i=1}^6\left(3{r_i}^2-8r_i\right)

\displaystyle=\frac12\sum_{i=1}^6\left(\frac{3i^2}4-4i\right)

\displaystyle=\frac38\sum_{i=1}^6i^2-2\sum_{i=1}^6i

Recall the formulas,

\displaystyle\sum_{i=1}^ni=\frac{n(n+1)}2

\displaystyle\sum_{i=1}^ni^2=\frac{n(n+1)(2n+1)}6

Then the value of the integral is approximately

\displaystyle=\frac38\cdot\frac{6\cdot7\cdot13}6-2\cdot\frac{6\cdot7}2=\boxed{-\frac{63}8}=-7.875

Compare to the exact value of the integral, -9.

7 0
3 years ago
I stuck on this answer help
slavikrds [6]

Answer:

Step-by-step explanation:

4 0
2 years ago
find the surface area of a right square pyramid if the area of the base is 144 cm squared and the height of the pyramid is 42 cm
xxTIMURxx [149]
Area of a pyramid is ⅓ * area of Base * height

or ⅓ * 144 * 42 or 2016 cm³
4 0
4 years ago
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