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3 years ago

10

How do you get the answer

1 answer:

lilavasa [31]3 years ago

7 0

Answer:

(x + 2)(x - 4)

Step-by-step explanation:

Given the zeros of a function, say x = a and x = b, then

the factors are (x - a) and (x - b)

From the graph

The zeros are x = - 2 and x = 4, thus the factors are

(x - (- 2)) and (x - 4), that is (x + 2) and (x - 4)

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Musya8 [376]

you can't solve this nor find the value of y because its not a full equation

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3 years ago

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If you answer 32 of 40 questions correctly what percent will you get

maksim [4K]

The answer to your question
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Thorium -228 is a radioactive substance that decays 50% every 1.9 years. How much of a 50 gram sample will exist after 22.8 year

Evgesh-ka [11]

Answer:

$A=0.0122\ gr$

Step-by-step explanation:

The exponential decrease formula that we must use is:

$A=A_0e^ {-kt}$

Where A is the amount of thorium as a function of time

$A_0$ is the initial amount and k is the decrease rate

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So

$A=A_0*0.5=50*0.5 = 25\\\\t=1.9$

$25=50e^ {-k(1.9)}$

We solve the equation for k

$0.5=e^ {-k(1.9)}$

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After 22.8 years the amount of thorium that exists is:

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5 0

4 years ago

Solve:-<br><br> x + 67 = 83<br><br> Thanks!

torisob [31]

Solve:-

x + 67 = 83
Inverse operation.
83 - 67 = x
83 - 67 = 16
x = 16

Check:-
x + 67 = 83
x = 16
16 + 67 = ?
16 + 67 = 83
Correct!

x = 16

4 0

3 years ago

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Ann [662]

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The event that either $S=T^2$ or $S^2=T$ has 5 possible ways of occurring:

$\{(1,1),(2,4),(4,2),(3,9),(9,3)\}$

So the probability of this happening is $\dfrac5{100}=\dfrac1{20}=0.05=5\%$ . You're interested in the complement, which means the answer is 95%.

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3 years ago