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3 years ago

Rewrite y=4-2x in slope-intercept form.

1 answer:

5 0

This is already in slope intercept from. because the slope is -2 and the y intercept is 4. so if you put it in stander form you would get y=-2x+4

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A country has an area of approximately 8,400,000,000 square miles and has an approximate population of 210,000 people.

ArbitrLikvidat [17]

D: 210,000 times 40,000 = 8,400,000,000

7 0

3 years ago

Giving brainliest :)

Verizon [17]

Answer:

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

Step-by-step explanation:

The inverse of a function is when the x and y are swapped. So the first step is to write f(x) as y and then swap the x and y

Original Equation:

$f(x)=\sqrt{x-1}\\$

write f(x) as y (since that's what it represents)

$y=\sqrt{x-1}$

Swap x and y

$x=\sqrt{y-1}$

Square both sides

$x^2=y-1$

Add 1 to both sides

$x^2+1=y$

So this gives you the equation:

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

8 0

2 years ago

Find AD <br><br> Please answer quickly with step by step explanation

SSSSS [86.1K]

Answer:

AD = 12 units

Step-by-step explanation:

AD = CD

4x = 10x-18

subtract 10x from both sides to get:

-6x = -18

divide each side by -6 to get:

x = 3

insert x into your problem and you get 4(3) which equals 12

4 0

2 years ago

State the domain of this function f(x)=-2+5|3-x|

zhenek [66]

All real numbers is the domain

{x | x ∈ R}
$\{ x \mid x \in \mathbb{R} \}$

8 0

4 years ago

Ik a) but I need help with b)

lozanna [386]

Answer:

${ \rm{ {( \frac{1}{ \sqrt{3} }) }^{7} }} \\$

• First rationalise the denominator:

$= { \rm{ {( \frac{1 \times \sqrt{3} }{ \sqrt{3} \times \sqrt{3} }) }^{7} }} \\ \\ = { \rm{ {( \frac{ \sqrt{3} }{3}) }^{7} }}$

• Open the bracket, by distributing the power to both the numerator and denominator:

$= { \rm{ \frac{( \sqrt{3} ) {}^{6} \times \sqrt{3} }{ {3}^{7} } }} \\ \\ = { \rm{ \frac{27 \sqrt{3} }{2187} }} \\ \\ = { \rm{ \frac{ \sqrt{3} }{81} }}$

b is 3 and c is 81

8 0

3 years ago