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3 years ago

9

I need help urgent plz someone help me solved this problem! Can someone plz help I’m giving you 10 points! I need help plz help

me! Will mark you as brainiest!

2 answers:

creativ13 [48]3 years ago

5 0

Answer:

$g(2) = 4(2) + 6 = 14$

$f(2) = 2(2) + 3 = 7$

$(g - f)(2) = 14 - 7 = 7$

NeTakaya3 years ago

4 0

problem decoded dude

thank and follow meh

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a boat cost $12050 and decreases in value by 12% per year. how much will the boat be worth after 9 years

sweet [91]

Each year the boat is worth 100-12 = 88% ( or 0.88) of the year before

after 12 years the boat is worth 12050 * 0.88^9 = $3813.56

5 0

3 years ago

In a parenting magazine, Mrs. Smith read an advertisement about all the different ways that bleach can be used to kill bacteria.

babymother [125]

Question:

(a) How many bacteria would be found in 24 hours

(b) How many bacteria would be found in 2 days

(c) How long for 1000 bacteria to be found

Answer:

(a) 282429536481 bacteria

(b) $7.97*10^{22$ bacteria

(c) 6 days

Step-by-step explanation:

The question illustrates an exponential function

$y = ab^x$

Where

$a = Initial\ Value = 1$

$b=Rate = 3$ --- i.e. triples

$x = number\ of\ hours$

Solving (a): Bacteria in 24 hours

In this case:

$x = 24$

Substitute $x = 24$ , $b = 3$ and $a = 1$

So:

$y = ab^x$

$y = 1 * 3^{24$

$y = 1 * 282429536481$

$y = 282429536481$ bacteria

Solving (b): Bacteria in 2 days

$2\ days =48\ hours$

So:

$x = 48$

Substitute $x = 48$ , $b = 3$ and $a = 1$

So:

$y = ab^x$

$y = 1 * 3^{48$

$y =7.97*10^{22$ bacteria

Solving (c): How long for 1000 bacteria

In this case:

$y = 1000$

Substitute $y = 1000$ , $b = 3$ and $a = 1$

So:

$y = ab^x$

$1000 = 1 *3^x$

$1000 = 3^x$

Take Log of both sides

$Log1000 = Log3^x$

This gives:

$Log1000 = xLog3$

Make x the subject

$x = \frac{Log1000}{Log3}$

$x \approx 6$

<em>Hence: It takes 6 days</em>

8 0

3 years ago

Determine the absolute value of -11.

AURORKA [14]

The absolute value is how far a number is from zero. The number will always be positive unless there is a negative symbol outside of the brackets. Therefore, your answer is 11.

5 0

4 years ago

Read 2 more answers

WILL MARK BRAINLY AND 10 POINTS PLEASE ANSWER I REALLY NEED HELP

GrogVix [38]

Answer:

False, True, True, False

Step-by-step explanation:

I'm pretty sure all your answers are right except the second one. I'm no genus or anything like that tho so I'm not sure. Plus I'm not good at graphs. Well depends how it is.

3 0

3 years ago

Решите уравнение 6x-4(x+5)=2,2

Tems11 [23]

Answer:

x=11.1

Step-by-step explanation:

6x-4x-20=2.2

2x-20=2.2

2x=22.2

x=11.1

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2 years ago