3 years ago

Using the 5 step method

Mathematics

1 answer:

Talja [164]3 years ago

3 0

Answer: the first integer is -6 and the second integer is -4

Step-by-step explanation:

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2 years ago

Given the function ƒ(x ) = 3x + 1, evaluate ƒ(a + 1).

Setler79 [48]

Answer:

$\Huge \boxed{3a+4}$

Step-by-step explanation:

The function is given.

$f(x)=3x+1$

To find : $f(a+1)$

The input for the function f(x) is (a + 1).

Replace x with (a + 1).

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Expand brackets.

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Simplifying.

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3 years ago

Question 5: How long will it take for 2 g of a sample of iodine-131, which has a half-life of about 8 days, to decay to 0.04 g?

Aleonysh [2.5K]

This problem can be represented through the following equation

A = A₀(1/2)^t/h

where

A-----------> is the amount of substance left after time t

A₀ ----------> is the original amount---------> 2 g

h-------------> is the half-life-----------> 8 days

for A=0.04 g

t=?

0.04 = 2(1/2)^t/8

0.02 = (1/2)^t/8

Take ln on both sides:

ln(0.02) = ln [(1/2)^t/8]

ln(0.02) = (t/8)(ln 1/2)

t = 8*ln(0.02)/ln(1/2)

t = 45.15 days

the answer is 45.15 days

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2 years ago

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anzhelika [568]

Answer:

16.5 is the area

Step-by-step explanation:

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