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3 years ago

Marvin was completing the square, and his work is shown below. Identify the line where he made his mistake.

Mathematics

2 answers:

kolbaska11 [484]3 years ago

3 0

Im taking the test not ill let you know<span />

stealth61 [152]3 years ago

3 0

Do you know what it is? i am currently taking the test. would be a lot of help :)

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A certain culture of year increases by 50% every three hours. A scientist places 9 grams of yeast in a culture dish. Write the e

miskamm [114]

Answer: a) Explicit formula : $f(x)=9(1.5)^{3x}$

b) Recursive formula : $f(x)=9(1.5)^{3x}$ and $f(x+1)=f(x)\times 1.5^3$

Step-by-step explanation:

Since we have given that

Number of grams of yeast in a culture dish initially = 9 grams

According to question, a certain culture of year increases by 50 % every three hours.

So, the explicit formula will be

$f(x)=9(1+\frac{50}{100})^{3x}\\\\f(x)=9(1+0.5)^{3x}\\\\f(x)=9(1.5)^{3x}$

And the recursive formula will be

$f(x)=9(1.5)^{3x}\\\\f(x+1)=9(1.5)^{3(x+1)}\\\\f(x+1)=9(1.5)^{3x+3}\\\\f(x+1)=9(1.5)^{3x}.(1.5)^3\\\\f(x+1)=f(x)\times 1.5^3$

Hence, a) Explicit formula : $f(x)=9(1.5)^{3x}$

b) Recursive formula : $f(x)=9(1.5)^{3x}$ and $f(x+1)=f(x)\times 1.5^3$

6 0

3 years ago

Please find the angle measurements u would be tha goat

nikitadnepr [17]

HXE=133

HXB=70

CXD=43

DXE=47

FXD=70

4 0

4 years ago

O<br> Decrease 40 by ratio of 4:5

Reika [66]

A decrease in the ratio 4:5 implies that :

New quantity:Old quantity = 4:5

Let the new quantity be $\bf \: x$

$\bf∴ x : 40 = 4:5$

$= > \bf \frac{x}{40} = \frac{4}{5}$

$\bf = > 40 \times \frac{x}{40} = 40 \times \frac{4}{5}$

$\bf = > x = 8 \times 4$

$\bf = > x = 32$

So, the new quantity is 32

4 0

3 years ago

2,4*10<br> 31,56*10<br> 3,7*100

ki77a [65]

Answer:

Step-by-step explanation:

1. 24

2. 315.6

3. 370

hopefully this helps and sorry if i did it wrong god bless love

4 0

3 years ago

Three different classes contain 20, 18, and 25 students, respectively, and no student is a member of more than one class. If a t

GaryK [48]

Answer:

9000

Step-by-step explanation:

20 x 18 x 25

20 options for one member

18 options for another member

25 members for the last member

4 0

3 years ago