Which of the following is a not a rational number? 1.3 3.1415... 5.25 0.66

Mathematics

2 answers:

mario62 [17]3 years ago

6 0

Answer:

B. would be your answer

Aleks [24]3 years ago

3 0

Answer:

Step-by-step explanation:

3.14159 is irrational because it's a repeating decimal; it cannot be expressed as the ratio of two integers. All the others can be expressed in that way.

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Find the area of the region under the graph of f on [a, b].<br> f(x) = x2 − 8x + 17; [−1, 2]

Harman [31]

Answer:

The area is 42 area units.

Step-by-step explanation:

The area of a function f(x) on an interval [a,b] is given by:

$A = \int\limits^a_b {f(x)} \, dx$

Applying to this question:

$A = \int\limits^-1_2 {x^2 - 8x + 17} \, dx$

Then

$F(x) = \frac{x^{3}}{3} - 4x^{2} + 17x$

$A = F(2) - F(-1)$

$F(2) = frac{2^{3}}{3} - 4*2^{2} + 17*2 = \frac{8}{3} + 18 = \frac{8 + 3*18}{3} = \frac{62}[3}$

$F(-1) = frac{(-1)^{3}}{3} - 4*(-1)^{2} + 17*(-1) = -\frac{1}{3} - 21 = \frac{-1 - 21*3}{3} = -\frac{64}[3}$

$A = F(2) - F(-1) = \frac{62}[3} - (-\frac{64}[3}) = \frac{62+64}{3} = 42$

The area is 42 area units.

5 0

3 years ago

The profit p in dollars of selling x widgets and y gadgets is given by the function p(x,y)=7x+8y. Which corner point of the shad

Rom4ik [11]

Answer: (10,30)

Step-by-step explanation:

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6 0

2 years ago

Read 2 more answers

Almost done math solve pls

AleksandrR [38]

Answer:

$2(2a - 3) - 3(4a + 5) \\ = 2 \times 2a - 2 \times 3 - (3 \times 4a + 3 \times 5) \\ = 4a - 6 - (12a + 15) \\ = 4a - 6 - 12a - 15 \\ = - 8a - 21 \\ thank \: you$