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3 years ago

Jane think of a number . She divides it by six and adds two. She gets an answer of 9. What number was she thinking of?

Mathematics

1 answer:

torisob [31]3 years ago

3 0

The unknown number is X; x/6+2=9; X/6=7; X=42; The answer is 42

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Kayla wants to know if she can afford the two sweaters. (which are $20.75 and $34.95) Given that $34.95, mentally add $20.75 plu

Dominik [7]

Answer:

I think she will need to divide or subtract to get the exact sum of the two prices .

Step-by-step explanation:

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3 years ago

Which point represents the vertex of the marked angle?<br> A. A<br> B. E<br> C. C<br> D. B

Klio2033 [76]

Which point represents the vertex of the marked angle?

B. E

4 0

3 years ago

Two neighbors in a rural area want to know the distance between their homes in miles. What should the neighbors use as a convers

denis23 [38]

Answer:

1 foot = 0.000189394 miles

Step-by-step explanation:

The two neighbors in the rural community could measure the distance between their homes first in feet. So that the value in feet can now be converted to miles by multiplying it by 0.000189394.

Since,

1 foot = 0.000189394 miles

Let us assume that the distance between the two houses is 500 feet, then;

1 foot = 0.000189394 miles

500 feet = x miles

x = 500 x 0.000189394

= 0.094697

So that for the considered example, the distance is approximately 0.095 miles.

Thus, the required conversion factor is;

1 foot = 0.000189394 miles

8 0

3 years ago

A colony of bacteria is grown under ideal conditions in a laboratory so that the population increases exponentially with time. A

Naddik [55]

Answer:

Initial bacterias = 6006000

Altought I believe is safe to assume that the values were 192,000 and 384,000 instead of 192,192,000 and 384,384,000, in that case the initial bacterias is 6000

Step-by-step explanation:

A exponential growth follows this formula:

Bacterias = C*rⁿ

C the initial amount

r the growth rate

n the number of time intervals

Bacterias (55 hours) = 192,192,000

Bacterias (66 hours) = 384,384,000

$Bacterias(55hours)=C*r^{{\frac{55-t}{t}}} \\Bacterias (66hours) = C*r^{\frac{66-t}{t}}}$

If you divide both you can get the growth rate:

$\frac{Bacterias (66hours)}{Bacterias(55hours)}=\frac{C*r^{\frac{66-t}{t}}}{C*r^{{\frac{55-t}{t}}}} \\\frac{384,384,000}{192,192,000} =r^{\frac{66-t}{t} -\frac{55-t}{t} } \\2 =r^{\frac{11}{t}}$

So with that r = 2 and each time interval correspond to 11 years

Then replacing in one you can get the initial amount of C

$Bacterias (55hours)=C*2^{\frac{55-11}{11} } 192,192,000 = C*32\\C= 6006000$

7 0

3 years ago

A movie complex has eight different movie theaters. The manager if the complex wants to conduct a survey to determine which snac

GalinKa [24]

The answer is most likely D but that is my opinion

7 0

3 years ago

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