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Ipatiy [6.2K]
3 years ago
6

URGENT HELP PLEASE!

Mathematics
1 answer:
KonstantinChe [14]3 years ago
3 0

Answer:

Perpendicular lines (c)

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Can someone please help me I’m struggling
blagie [28]

Answer:

point form is (2,-1), equation form is x= 2, y=-1

Step-by-step explanation:

3 0
3 years ago
Write an equation that could be used to solve for X.<br> A<br> Сал<br> 2xº<br> tº<br> D<br> B
m_a_m_a [10]

Answer: Hmmmm ok look i thinks its a carrot

Step-by-step explanation:

i found a x in my carrot

5 0
3 years ago
Please evaluate: (−2)^3 · (−2)^4<br> show your work
sammy [17]

Answer:

-128

Step-by-step explanation:

(-2)^3 \cdot (-2)^4=

(-2\cdot -2\cdot -2) \cdot (-2\cdot -2\cdot -2\cdot -2)=

-8\cdot 16=

-128

Hope this helps!

3 0
3 years ago
Read 2 more answers
The ubiquitous 12oz aluminum cans used to distribute drinks in this country have a diameter of approximately 2.75 inches and a h
gayaneshka [121]

Answer:

3.5%

Step-by-step explanation:

The volume of a cylinder = \pi r^2h

<em>r</em> = radius of cylinder,

<em>h</em> = height of cylinder

For the non-optimal can,

<em>r</em> = 2.75/2 = 1.375

<em>h</em> = 5.0

V = \pi(1.375^2)\times 5.0 = 9.453125\pi

<em />

For the optimal can,

<em>d</em>/<em>h</em> = 1,

<em>d</em> = <em>h</em>

2<em>r </em>=<em> h</em>

<em>r</em> = h/2

V = \pi\left(\dfrac{h}{2}\right)^2\times h = \pi\left(\dfrac{h^3}{4}\right)

They have the same volume.

<em />\pi\dfrac{h^3}{4} = 9.453125\pi<em />

h^3 = 37.8125

h=3.36 (This is the height of the optimal can)

r = \dfrac{3.36}{2} = 1.68 (This is the radius of the optimal can)

The area of a cylinder is

<em />A = 2\pi r(r+h)<em />

For the non-optimal can,

A = 2\pi\times\dfrac{2.75}{2}\left(\dfrac{2.75}{2}+5.0\right) = 17.53125\pi

For the optimal can,

A = 2\pi\times1.68\left(1.68+3.36\right) = 16.9344\pi

Amount of aluminum saved, as a percentage of the amount used to make the optimal cans = \dfrac{17.53125\pi - 16.9344\pi}{16.9344\pi}\times 100\% = 3.5\%

5 0
3 years ago
Help asap!<br><br> Thanks in advance!<br><br> There's two questions btw:)
lutik1710 [3]

Answer:

[1].

Option A and D are correct.

[2].

Option A is correct

Step-by-step explanation:

[1].

Quadratic function states that it is an equation of second degree i.,e it contains at least one term that is squared.

The standard form of the quadratic equation is; ax^2+bx+c = 0

A.

y(y+4)-y = 6

Using distributive property: a\cdot (b+c) = a\cdot b + a\cdot c

y^2+4y-y=6

Combine like terms;

y^2+3y = 6

or

y^2+3y -6=0 which represents a quadratic equation.

B.

3a-7 = 2(7a-3)

3a-7 = 14a-6

or

11a+1 = 0 which is not a quadratic equation.

C.

(3x+2)+(6x-1) = 0

Combine like terms;

9x +1 = 0 which is not a quadratic equation.

D.

4b(b) = 0

4b^2 = 0 which represents the quadratic equation.

[2].

Given the parent function: y=x^2

The reflection rule over x axis is given by;

(x, y) \rightarrow (x, -y)

then

the function become: y = -x^2

Vertical shift:

If c is a positive real number, the graph y=f(x)+c is the graph of y =f(x) shifted upward c units.

If c is a positive real number, the graph y=f(x)-c is the graph of y =f(x) shifted downward c units.

then;

The graph y=-x^2-3 is the graph of y=-x^2 shifted 3 units down.

Therefore, the translation of the graph of  y=x^2 to obtain y=-x^2-3 is, reflect over the  x-axis and shift down 3




6 0
3 years ago
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