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3 years ago

12

Solve this easy question that I don't understand

1 answer:

Setler [38]3 years ago

7 0

Answer:

It is C. and btw........... DON'T TRUST LINKS!!

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Q(a+1) - 2q(a) if q(x) = x²+3x+4

siniylev [52]

$q(x) = {x}^{2} + 3x + 4$

_________________________________

Step(1)

To find q(a) we just need to put a instead of x in q(x) function.

Let's do it...

$q(a) = {a}^{2} + 3a + 4$

Multiply sides by -2 :

$- 2q(a) = - 2( {a}^{2} + 3a + 4)$

$- 2q(a) = - 2 {a}^{2} - 6a - 8$

_________________________________

Step (2)

To find q(a+1) we just need to put a+1 instead of x in q(x) function.

Let's do it...

$q(a + 1) = ({a + 1})^{2} + 3(a + 1) + 4 \\$

$q(a + 1) = {a}^{2} + 2a + 1 + 3a + 3 + 4 \\$

$q(a + 1) = {a}^{2} + 5a + 8$

_________________________________

Step (3)

$q(a + 1) - 2q(a) =$

${a}^{2} + 5a + 8 - 2 {a}^{2} - 6a - 8 = \\$

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

And we're done.

Thanks for watching buddy good luck.

♥️♥️♥️♥️♥️

8 0

3 years ago

Find the measure of angle t

natima [27]

$\huge \tt \color{pink}{A}\color{blue}{n}\color{red}{s}\color{green}{w}\color{grey}{e}\color{purple}{r }$

$\large\underline{ \boxed{ \sf{✰\:Important\: point's }}}$

➢Given two lines are intersecting lines
➢ as it's clearly known when two or more lines meet each other at a specific points is said to be as intersecting lines nd they must be having a common point
➢Here angle t and angle 120⁰ forms adjacent angles
and sum sum of adjacent angles is 180⁰

${ \rule{70mm}{2.9pt}}$

$\underline{ \boxed{ \sf{✵\: let's\: solve\:✵}}}$

$\sf ➛\angle \: 120 \degree + \angle \:t = 180\degree \\ \sf ➛\angle \:t = 180 \degree - \angle \:120 \degree \\ \sf ➛\angle \: t = \:60 \degree$

${ \rule{70mm}{2.9pt}}$

$\boxed{✛\underline{ \boxed{ \sf{ \: \angle \: t = 60 \degree \: }}}✛}$

Hope it helps !

5 0

2 years ago

3. Find the circumference of a circle that has a diameter of 12. Round to the hundredths. *

mr Goodwill [35]

Answer:
B

I hope this could help you ^^

8 0

3 years ago

Which function is the inverse of f(x)=2x+3

MAXImum [283]

Answer:

$f^{-1}(x)=\frac{x-3}{2}$

Step-by-step explanation:

we have

$f(x)=2x+3$

Let

$y=f(x)$

$y=2x+3$

Exchanges the variables x for y and y for x

$x=2y+3$

Isolate the variable y

$2y=x-3$

$y=\frac{x-3}{2}$

Let

$f^{-1}(x)=y$

$f^{-1}(x)=\frac{x-3}{2}$

8 0

3 years ago

Read 2 more answers

Bryan earns 9$ for each hour of yard work how many hours in all will it take Bryan to earn 27$

Svetllana [295]

Answer:

3 hours

Step-by-step explanation:

7 0

3 years ago