3 years ago

I’ll give you 15 point just help

Mathematics

1 answer:

Maru [420]3 years ago

4 0

Answer:

Step-by-step explanation:

y - 4 = -2/3(x - 3)

y - 4 = -2/3x + 2

y = -2/3x + 6

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2 and 2 over 2, divided by -1/4 = what

alex41 [277]

Answer:

1.75

Step-by-step explanation:

it is right

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3 years ago

What is 1x + 3x when x=1

rodikova [14]

Answer:

x therefore will be equal to 4

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3 years ago

Read 2 more answers

When studying radioactive material, a nuclear engineer found that over 365 days, 1,000,000 radioactive atoms decayed to 973 co

HACTEHA [7]

Answer:

A. number of decayed atoms = 73.197

Step-by-step explanation:

In order to find the answer we need to use the radioactive decay equation:

$N(t)=N0*e^{kt}$ where:

N0=initial radioactive atoms

t=time

k=radioactive decay constant

In our case, when t=0 we have 1,000,000 atoms, so:

$1,000,000=N0*e^{k*0}$

$1,000,000=N0$

Now we need to find 'k'. Using the provied information that after 365 days we have 973,635 radioactive atoms, we have:

$973,635=1,000,000*e^{k*365}$

$ln(973,635/1,000,000)/365=k$

$-0.0000732=k$

A. atoms decayed in a day:

$N(t)=1,000,000*e^{-0.0000732t}$

$N(1)=1,000,000*e^{-0.0000732*1}$

$N(1)= 999,926.803$

Number of atoms decayed in a day = 1,000,000 - 999,926.803 = 73.197

B. Because 'k' represents the probability of decay, then the probability that on a given day 51 radioactive atoms decayed is k=0.0000732.

4 0

3 years ago

2. Based on the table below, determine the exponential function being used. Use x as your variable. Then, evaluate this expressi

Ostrovityanka [42]

Answer:

$y=5^{x}\\y=5^{7}=78125$

Step-by-step explanation:

$y = a^{x}, a=5\\y=5^{x}\\y=5^{0}=1\\y=5^{1}=5\\y=5^{2}=25\\y=5^{3}=125\\and\\y=5^{7} = 78125$

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3 years ago

What is the value of the expression -2^2+4x(-3) when x= -3

Kisachek [45]

It will be
(-2)^2+4*(-3)(-3) =40

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3 years ago