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3 years ago

Which of the following statements is incorrect?

Mathematics

2 answers:

Pie3 years ago

7 0

Answer:

Step-by-step explanation:

nata0808 [166]3 years ago

6 0

$b 5 < \sqrt{37} < 6$

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Write in slope-intercept form an equation of the

Ira Lisetskai [31]

Answer:

y = 5x - 6

Step-by-step explanation:

8 0

3 years ago

Evaluate the given integral by changing to polar coordinates.∫∫ x2y dA, where D is the top half of the disk with center the orig

amid [387]

Answer:

Required value is $\frac{1250}{3}$ .

Step-by-step explanation:

We have to find the value of,

$\int\int_{D} x^2y dA\hfill (1)$

where, $D=\{(5,\theta) : 0\leq r\leq 5, 0\leq \theta \leq \pi \}$

To convert it in polar form let $x=r\cos\theta, y=r\sin\theta$ and substitute in (1) we get,

$\int\int_{D} x^2y dA$

$=\int_{0}^{\pi}\int_{0}^{5}(r\cos\theta)^2(r\sin\theta)rdrd\theta$

Assuming,

$u=\cos \theta$ then,

$du=-\sin\theta d\theta\implies-du=\sin\thetad\theta[tex]For [tex]\theta=0, u=1$ and $\theta=\pi$ gives u=-1. Hence,

$\int\int_{D} x^2y dA$

$=\int_{0}^{\pi}\int_{0}^{5}(r\cos\theta)^2(r\sin\theta)rdrd\theta$

$=\int_{1}^{-1}u^2(-du)\int_{0}^{5}r^4dr$

$=\int_{-1}^{1}u^2du\int_{0}^{5}r^4dr$

$=\Big[\frac{u^3}{3}\Big]_{-1}^{1}\times\Big[\frac{r^5}{5}\Big]_{0}^{5}$

$=\frac{2\times 5^4}{3}=\frac{1250}{3}$

5 0

3 years ago

The hundreds digit of my number is less than the tens digit. The ones digit is greater than the tens digit. What could my answer

Vinil7 [7]

Hmmmmm I gotta think. Brb

7 0

3 years ago

Algebra 1, match this

tamaranim1 [39]

Answer:

a, d, b, c

Step-by-step explanation:

7 0

2 years ago

6c + 14 = -5c + 4 + 9c c=

agasfer [191]

First combine like terms
6c + 14 = 4c + 4, then subtract 4c from both sides
2c + 14 = 4, then subtract 14 from both sides
2c = -10, then divide both sides by 2

C = -5

8 0

3 years ago

Read 2 more answers