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3 years ago

Half - life is

Mathematics

1 answer:

Aleonysh [2.5K]3 years ago

8 0

Answer:

the amount of time it takes for approximately 50% of a radioactive atom sample to undergo nuclear decay

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Make x the subject of the formula y = m x + b

NemiM [27]

Y-b/m=x (you just move everything to the other side)

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3 years ago

What is y=4x^2-9x+1 in vertex form

Anna11 [10]

Answer:

$y = 4 \left(x - \dfrac{9}{8} \right)^2 - \dfrac{65}{16}$

Step-by-step explanation:

$y = 4x^2 - 9x + 1$

You need to complete the square on the right side.

$y = (4x^2 - 9x) + 1$

$y = 4(x^2 - \dfrac{9}{4}x) + 1$

$y = 4 \left( x^2 - \dfrac{9}{4}x + \left( \dfrac{9}{8} \right)^2 \right) + 1 - 4\left( \dfrac{9}{8} \right)^2$

$y = 4 \left(x - \dfrac{9}{8} \right)^2 + 1 - 4 \left( \dfrac{81}{64} \right)$

$y = 4 \left(x - \dfrac{9}{8} \right)^2 + 1 - \dfrac{81}{16}$

$y = 4 \left(x - \dfrac{9}{8} \right)^2 + \dfrac{16}{16} - \dfrac{81}{16}$

$y = 4 \left(x - \dfrac{9}{8} \right)^2 - \dfrac{65}{16}$

3 0

3 years ago

Which of the numbers listed below are solutions to the equation?

Savatey [412]

5, and -5 because a negative times a negative equals a positive

7 0

3 years ago

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Which number is greater than 234,781,114?

posledela

Answer:

I think its B.

Step-by-step explanation:

sorry if i am wrong.

3 0

3 years ago

Help me please ASAP please

Lemur [1.5K]

So 6.5 inches long in scale, but every 2 in is 5 yards.
Divide 6.5 by 2. This gives you 3.25. Then multiply by 5 to get yards.
It’s 16.25 yards long.

3 0

3 years ago

Read 2 more answers