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3 years ago

Answers? i honestly don’t get this topic

Mathematics

1 answer:

Ghella [55]3 years ago

3 0

To find total surface area of a 3D shape you need to find the area of each side of the shape and add it altogether

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Which of the following statements are true? Select all that apply

Andrew [12]

Answer:

A, C, D

Step-by-step explanation:

When lines are parallel, alternate interior angles at a transversal (5 & 6) are congruent, as are corresponding angles (2 & 3), (2 & 4). The converse is also true: congruent angles mean the lines are parallel.

Angles 2 & 3 are corresponding angles at the transversal r if lines p and q are parallel, so their congruence will guarantee that those lines are parallel. (choice A)

Angles 2 & 4 are corresponding angles at the transversal q if lines r and s are parallel, so their congruence will guarantee that those lines are parallel. (choice C)

Angles 5 & 6 are alternate interior angles at the transversal p if lines r and s are parallel, so their congruence will guarantee that those lines are parallel. (choice D)

Angles 5 and 7 have no common side, so their congruence does not guarantee anything about the lines that create them. Choice B is not applicable.

4 0

3 years ago

A +10 _____ = 2a 3 What is the value of a in the proportion?

scoray [572]

I think the solve is 2

5 0

3 years ago

NEED HELP ASAP. The pictures goes with the problems.

Studentka2010 [4]

Answer: m∠ $E=74\°$

Step-by-step explanation:

1. By definition, the adjacent angles of a parallelogram are supplementary, they add up 180 degrees. Therefore, in the given parallelogram:

$O+M=180$

$3x+1+2x+4=180$

2. Then, you must solve for x, as following:

$5x+5=180$

$5x=175\\x=35$

3. Substitute the value of x obtained into $2x+4$ to calculate the angle M:

$2x+4=2(35)+4=74$

Then:

m∠ $M=74\°$

4. By definition the opposite angles of a parallelogram are equal, therefore:

$E=M\\E=74\°$

5 0

3 years ago

Find the area of a circle with diameter of 10 cm. Let pi = 3.14

Reika [66]

Answer:

A = 78.5 cm^2

Step-by-step explanation:

The diameter is 10 so the radius is 1/2 of the diameter

r =1/2d = 1/2(10) = 5

The area of a circle is

A = pi r^2

A = 3.14 (5)^2

A = 78.5 cm^2

6 0

3 years ago

Find the Taylor series for f(x) centered at the given value of a. [Assume that f has a power series expansion. Do not show that

lawyer [7]

$f(x)=\sin x\implies f(\pi)=0$

$f'(x)=\cos x\implies f'(\pi)=-1$

$f''(x)=-\sin x\implies f''(\pi)=0$

$f'''(x)=-\cos x\implies f'''(\pi)=1$

and so on, so that the Taylor series about $x=\pi$ takes the form

$-(x-\pi)+\dfrac{(x-\pi)^3}{3!}-\dfrac{(x-\pi)^5}{5!}+\dfrac{(x-\pi)^7}{7!}-\cdots=\displaystyle\sum_{n=1}^\infty\frac{(-1)^n(x-\pi)^{2n-1}}{(2n-1)!}$

The ratio test gives

$\displaystyle\lim_{n\to\infty}\left|\frac{\frac{(-1)^{n+1}(x-\pi)^{2n+1}}{(2n+1)!}}{\frac{(-1)^n(x-\pi)^{2n-1}}{(2n-1)!}}\right|=(x-\pi)^2\lim_{n\to\infty}\frac{(2n-1)!}{(2n+1)!}=0$

which means the series converges everywhere, so the radius of convergence is infinite.

4 0

4 years ago