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2 years ago

Find the value of x x=___

Mathematics

2 answers:

blagie [28]2 years ago

5 0

X=2.8 really hoped i helped!

ss7ja [257]2 years ago

4 0

Answer :

x = 2.8

Hope this helps!

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PLEASE HURRY 1/3x-1=4/3x+2 solve for y

topjm [15]

the answer is (1,2).

6 0

2 years ago

Lily spent 1/6 of her free time practicing soccer and 3 of her

melomori [17]

Answer:

She spent 4/6 of her free time.

Step-by-step explanation:

1/6 + 3/6 = 4/6

4 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

Answer:

(a) 282429536481 bacteria

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

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

2 years ago

How do you solve geometry proofs?

EastWind [94]

Write the Theorem statement that needs to be proved, and state the givens.

7 0

2 years ago

Question on picture!!!!!!!!

Nat2105 [25]

Answer:

1st option

Step-by-step explanation:

Given y varies inversely as x then the equation relating them is

y = $\frac{k}{x}$ ← k is the constant of variation

To find k use (3, 8 ) , that is x = 3 when y = 8 , then

8 = $\frac{k}{3}$ ( multiply both sides by 3 )

24 = k

y = $\frac{24}{x}$ ← equation of variation

6 0

2 years ago