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3 years ago

Which three-dimensional figure is formed by the rotation given?

Mathematics

2 answers:

marysya [2.9K]3 years ago

5 0

A line being rotated in such a way I would think would be A

valkas [14]3 years ago

5 0

Answer:

Step-by-step explanation:

It would give the bowl on the left.. That is option A.

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The average weight of David, Esther, and Henry is 42.6 kg. Esther is twice as heavy as Henry. David is 5.2 kilograms lighter tha

kari74 [83]

Answer:

53.2 kg

Step-by-step explanation:

Let E represent Esther's weight. Then Henry's weight is E/2, and David's weight is E-5.2. Their average weight is ...

((E-5.2) + E + (E/2))/3 = 42.6

2.5E -5.2 = 127.8 . . . . . . . . . . multiply by 3, simplify

2.5E = 133 . . . . . . . . . . . . . . . . add 5.2

E = 133/2.5 = 53.2 . . . . kg

Esther's weight is 53.2 kg.

7 0

3 years ago

Find the explicit formula for the general nth term of the arithmetic sequence described below. Simplify the formula and reduce a

NemiM [27]

Answer:

an = 4/3n - 13/3.

Step-by-step explanation:

The first term is a1,

a24 = a1 + 23d

83/3 = a1 + 4/3* 23

a1 = 83/3 - 92/3

a1 = -9/3 = -3.

So the nth term an = -3 + 4/3(n - 1)

an = -3 + 4/3 n - 4/3

an = 4/3n - 13/3

6 0

3 years ago

Help I need an answer ASAP will give brainliest

MrMuchimi

The answer is a=6, b=4, and 0=3 you can always try to find the answer in google though

Hope that helped

6 0

2 years ago

How do I do lesson 12 grade 6 problem set

myrzilka [38]

Umm.. I have to see the problems, we might not have the same textbooks so

8 0

2 years ago

Read 2 more answers

Write the equation of a parabola having the vertex (1, −2) and containing the point (3, 6) in vertex form. Then, rewrite the equ

In-s [12.5K]

PART A

The equation of the parabola in vertex form is given by the formula,

$y - k = a {(x - h)}^{2}$

where

$(h,k)=(1,-2)$

is the vertex of the parabola.

We substitute these values to obtain,

$y + 2 = a {(x - 1)}^{2}$

The point, (3,6) lies on the parabola.

It must therefore satisfy its equation.

$6 + 2 = a {(3 - 1)}^{2}$

$8= a {(2)}^{2}$

$8=4a$

$a = 2$
Hence the equation of the parabola in vertex form is

$y + 2 = 2 {(x - 1)}^{2}$

PART B

To obtain the equation of the parabola in standard form, we expand the vertex form of the equation.

$y + 2 = 2{(x - 1)}^{2}$

This implies that

$y + 2 = 2(x - 1)(x - 1)$

We expand to obtain,

$y + 2 = 2( {x}^{2} - 2x + 1)$

This will give us,

$y + 2 = 2 {x}^{2} - 4x + 2$

$y = {x}^{2} - 4x$

This equation is now in the form,

$y = a {x}^{2} + bx + c$
where

$a=1,b=-4,c=0$

This is the standard form

7 0

3 years ago