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3 years ago

Contagious diseases can spread quickly. Suppose 3 people are ill during the first week of an epidemic, and each

Mathematics

1 answer:

Virty [35]3 years ago

3 0

Answer:

392,978 people is correct

Step-by-step explanation: i am a college math teiacher i work at steve harvard

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Solve the following quadratic equations by any method. The solutions are:

Nataly_w [17]

Answer:

Option C .

Step-by-step explanation:

We would like to solve the below quadratic equation ,

$\longrightarrow f(x) = x^2-12x +32$

Step 1 : Equate f(x) with 0 :-

$\longrightarrow f(x) = 0\\$

$\longrightarrow x^2-12x + 32=0$

Step 2 : Factorise the RHS :-

$\longrightarrow x^2-8x - 4x +32=0\\$

$\longrightarrow x(x-8)-4(x-8)=0\\$

$\longrightarrow (x-8)(x-4)=0\\$

Step 3 : Equate each factor with 0 :-

$\longrightarrow x - 8 = 0\\ \qquad x -4=0$

$\longrightarrow x = 8 \qquad x = 4$

$\longrightarrow \underline{\underline{\boldsymbol{ x = 8,4}}}$

Hence option C is correct .

8 0

2 years ago

Write an= 8 + (n-1)(3) as a function

Citrus2011 [14]

Answer:

The answer to your question is 3n+5

5 0

3 years ago

The lines on the graph below represent the cost of apples at four different stores.

Doss [256]

The cost of 10 apples would be 26 dollars because each pound is 14.

5 0

3 years ago

4−(3x−8)=21 solve this pls

riadik2000 [5.3K]

Answer:

4 - ( 3x - 8 ) = 21

break the bracket first ,it gives : 4 - 3x + 8 = 21

12 - 3x = 21

- 3x = 21 - 12

- 3x = 9

-x = 9/3

-x = 3

X = - 3

[ check if the answer is correct, put -3 instead of X in the above equation ! we get 4 - { 3(-3) - 8 } = 21

4 - { - 9 - 8 } = 21

4 - { - 17 } = 21

break the bracket, minus and minus will multiply and will become plus , so we have 4 + 17 = 21 , hence 21 = 21 ! therefore X = -3

5 0

3 years ago

19 pint is equal to how many pints

Ludmilka [50]

Not sure what your asking here

5 0

3 years ago