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2 years ago

PLS HELP

Mathematics

2 answers:

Ganezh [65]2 years ago

6 0

Answer:

Hello! symmetry

Step-by-step explanation:

Symmetry is a mirror image of an image.

Cut a hexagon in half for example

_AnnieTheDreamGirl, 3.9.22

asambeis [7]2 years ago

5 0

Answer:

A circle

Step-by-step explanation:

if you reflect a circle in any way its the same al the time

please give brainliest :)

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Do any of y’all know the answer ? Thank you !

zubka84 [21]

Answer:

Step-by-step explanation:

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3 years ago

Let f(x)=x+7 and g(x)=x-4 Find f(x) x g(x)

Sveta_85 [38]

Answer:

C. x²+3x-28

Step-by-step explanation:

f(x) = x +7

g(x) = x -4

f(x) · g(x) = (x-4)(x+7)

= x²+7x-4x-28

= x²+3x-28

3 0

3 years ago

Read 2 more answers

Find the area of triangle ABC. The figure is not drawn to scale.

kupik [55]

23.14 cm<span>2 is the answer </span>

6 0

3 years ago

PLS HELP!!

schepotkina [342]

Option a: Quadratic expression

Explanation:

The expression is $-2x^{2} +11$

Option a: Quadratic expression

The quadratic expression is an expression in which the highest power or degree of a variable is 2.

Thus, from the expression $-2x^{2} +11$ the highest power of the variable is 2.

Hence, the expression is quadratic

Option a is the correct answer.

Option b: Linear expression

The linear expression is of the form $y=mx+b$

Since, the expression $-2x^{2} +11$ is not of the form $y=mx+b$ , it is not a linear expression.

Hence, Option b is not the correct answer.

Option c: Cubic expression

The cubic expression is an expression in which the highest power or degree of a variable is 3.

Since, the expression $-2x^{2} +11$ does not have the highest power 3, it is not a cubic expression.

Hence, Option c is not the correct answer.

Option d: Exponential expression

The exponential expression indicates the number of times the base is used as a factor.

Since, the expression $-2x^{2} +11$ does not indicates the number of times the base is used as a factor, it is not exponential expression.

Hence, Option d is not the correct answer.

3 0

3 years ago

Prove the formula for (d/dx)(cos−1(x)) by the same method as for (d/dx)(sin−1(x)). Let y = cos−1(x). Then cos(y) = and 0 ≤ y ≤ π

alexandr402 [8]

Answer:

$\frac{d\,arccos(x)}{dx} =-\frac{1}{\sqrt{1-x^2} }$

See the proof below

Step-by-step explanation:

if $y=arccos(x)$ , then : $cos(y)=cos(arccos(x))=x$

We can then apply the derivative to both sides of this last equation and remember to use the chain rule as we encounter the variable "y":

$cos(y)=x\\\frac{d}{dx} cos(y)=\frac{d}{dx} x\\-sin(y)\,\frac{dy}{dx} =1\\\frac{dy}{dx} =-\frac{1}{sin(y)} \\\frac{dy}{dx} =-\frac{1}{\sqrt{1-cos^2(y)} }\\\frac{dy}{dx} =-\frac{1}{\sqrt{1-x^2} }\\\frac{d\,arccos(x)}{dx} =-\frac{1}{\sqrt{1-x^2} }$

7 0

3 years ago