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3 years ago

11

Ben went to the hardware store by 15 pieces of rope of equal length the total length of the rope was 326.7 meters how long was e

ach rope?

1 answer:

N76 [4]3 years ago

4 0

Answer:

21.78 meters

Step-by-step explanation:

Divide 326.7/15

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The initial population of a town is 2500, and it grows with a doubling time of 10 years. What will the population be in 8 years?

alisha [4.7K]

2500x0.80=2000 so i think it would be 2000 in 8 years

or if youre adding the 2000 to the already existing 2500 then it would be 4500.

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3 years ago

COLLEGE ALGEBRA!!!!

Savatey [412]

Answer:

$a.A_t=A_o.(\frac{1}{2})^t^/^{t_h}$

$b. 0.010986grams$

$c.109.84 mins$

Step-by-step explanation:

Let $t_1_/_2$ denote the half life of our substance $t$ to be our time, $A_t$ is mass at time t and $A_o$ as initial mass. Our half life equation can be expressed as:

$A_t=A_o.(\frac{1}{2})^t^/^{t_h}$ from which we can obtained mass at any given time.

b. From our equation above,

we can convert our t into mins as $t=4*60=240mins$

We then substitute $t$ value into the equation

$A_2_4_0=45\times(1/2)^2^4^0^/^2^0\\=0.010986\\=0.010986grams$

Hence mass after 4hrs is $0.010986grams$

c. We can set our final mass to $1g$ then substitute in the equation

$A_t=A_o.(\frac{1}{2})^t^/^{t_h}$ . Substitute $A_t=1g$

$1.0=45\times(1/2)^t^/^20$

$1.0=45\times(1/2)^t^/^2^0\\log(1/45)=(t/20)\times log(1/2)\\t=20\times5.491853=109.84 mins$

Hence time until $1g$ mass is 109.83 minutes

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3 years ago

X2 + 3x - 108 = 0<br> What is the answer?

worty [1.4K]

Answer:

The answer is x=9 and/or x = -12

Step-by-step explanation:

This is a quadratic formula meaning that you must take the a value (1) b value (3) and the c value (108) and plug it into the quadratic formula.

$\frac{-3±\sqrt{9+4*1*-108} }{2}$

which simplifies to -3 add or subtract the sqrt of 441 divided by two.

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4 years ago

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anyanavicka [17]

Answer:

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Step-by-step explanation:

There is no slope, but a no slope line is vertical. Therefore making this a zero slope. I hope this helps :)

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3 years ago

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Write as an expression: a number that is equal to twice as much as x

lesantik [10]

Let's call the number we're looking for $y$ . We know that $y$ is twice as much as $x$ .

Twice as much as a number simply means the double of that number, and in turn the double of a number means to muliply that number by 2.

So, in order to obtain $y$ , you have to multply $x$ by 2. In formula, you have

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3 years ago