If y is the principal square root of 5 what must be true?

Answers

Answer 1

Answer: Since every square root has a positive and a negative solution, for example:

$√(9)$ = -3 or +3

The principal square root defines only the positive solution (between the two);

Therefore: if y is the principal square root of 5, then it must be the positive square root of 5, not the negative square root of 5.

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If f(x) and 1(x) are inverse functions of each other and f(x) = 2x+5, what is ri(8)?-1
3/2
41/8 23

Answers

Answer:

3/2

Step-by-step explanation:

How to write g(x)=2x+3/x+1 in the form of:g(x)=a/x+p +q

Answers

Hello,

Please write correctly.

g(x)= (2x+3)/(x+1) to be written like a/(x+p) + q

It is very simple!

(2x+3)/(x+1)= [(2x+2)+1]/(x+1)= (2(x+1)+1)/(x+1)= 2+1/(x+1)

The surface area of a cube is 96 square feet. Find the volume of the cube.

Answers

cube has six identical walls

96ft² : 6 = 6 ft² - one wall surface

pattern on the surface of the cube
A = a²
a - the edge of the cube

A = a² ⇔ a=√A
a = √(16ft)² = 4ft
V = volume
V = a³
V = (4ft)³ = 64 ft³

Which products result in a difference of squares? Check all that apply.(x – y)(y – x)
(6 – y)(6 – y)
(3 + xz)(–3 + xz)
(y2 – xy)(y2 + xy)
(25x – 7y)(–7y + 25x)
(64y2 + x2)(–x2 + 64y2)

Answers

Answer:

(x-y)(y-x)

Step-by-step explanation:

because x-y=y-x

Round the number of connected computers 42,199,279 to the nearest ten million

Answers

10, 000, 000 = ten million
40, 000 ,000 is the answer for the nearest ten million

40,000,000 is the answer

A dry cleaner charges $5.00 to clean one item. He offers to clean a second item for $4.50, and a third for $4.00. If he continues to subtract $0.50 for each additional item, how much will it cost to clean six items? MARKING BRAINLEST IF HURRY

Answers

5+4.5+4+3.5+3+2.5 = 22.5

Answer:$2.50 to clean 6 items

Step-by-step explanation:

$5.00-0.5=$4.5= 2 items

$4.5-0.5=$4= 3 items

$4-0.5=$3.5= 4 items

$3.5-0.5=$3= 5 items

$3-0.5=$2.5= 6 items

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What is the solution to the equation 9^(x - 2) = 27 ? x = 2.5/ x = 0.5/ x = -0.5 /x = 3.5