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2 years ago

12

What is the sum of (3q-2) (3q-2)?

1 answer:

alexandr1967 [171]2 years ago

3 0

FOIL
(9q^2)-(6q)-(6q)+4
9q^2 -12q +4

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What’s the area of the above figure which has sides of length 6 And 8

Nastasia [14]

Answer:ill have to see

Step-by-step explanation:

6 0

2 years ago

What is the value of this expression? 2.4 27.316

Rom4ik [11]

Answer:

If it is 2.4 times 27.316, it is 65.5584

Step-by-step explanation:

7 0

2 years ago

Whats the equation 128 = p + 89 if p= 39

sergiy2304 [10]

128 = 128 cause u add them

8 0

2 years ago

10. A perfect circle measuring 38 feet across was discovered on Brickell Avenue in Miami in 1998. Known as the Miami Circle at B

vivado [14]

Using an exponential function, it is found that the Tequesta settlement is 1845 years old.

<h3>What is an exponential function?</h3>

The exponential equation for a decaying amount of a substance is given by:

$A(t) = A(0)e^{-rt}$

In which:

A(0) is the initial value.

r is the decay rate, as a decimal.

Researching on the internet, the half-life of carbon 14 is of 5,730 years, hence A(5730) = 0.5A(0), which we use to find r.

$A(t) = A(0)e^{-rt}$

$0.5A(0) = A(0)e^{-5730r}$

$e^{-5730r} = 0.5$

$\ln{e^{-5730r}} = \ln{0.5}$

$5730r = -\ln{0.5}$

$r = -\frac{\ln{0.5}}{5730}$

$r = 0.00012096809$

Hence, the equation is:

$A(t) = A(0)e^{-0.00012096809t}$

The wood chips were found to contain 80% of the atmospheric carbon-14, hence we have to find t for which A(t) = 0.8A(0).

$A(t) = A(0)e^{-0.00012096809t}$

$0.8A(0) = A(0)e^{-0.00012096809t}$

$e^{-0.00012096809t} = 0.8$

$\ln{e^{-0.00012096809t}} = \ln{0.8}$

$-0.00012096809t = \ln{0.8}$

$t = -\frac{\ln{0.8}}{0.00012096809}$

$t = 1845$

The Tequesta settlement is 1845 years old.

You can learn more about exponential functions at brainly.com/question/25537936

8 0

2 years ago

60% of Herbert's movies are adventure movies. He has 18 adventure movies. How many movies does Herbert have in all?

Vera_Pavlovna [14]

Data:
x (Number of movies) = ?

$\frac{60}{100} *x = 18$
$0,6x = 18$
$x = \frac{18}{0,6}$
$\boxed{x = 30}$

Answer:
<span>Herbert have in all ?
30 movies</span>

5 0

3 years ago