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stiks02 [169]
3 years ago
11

PROBLEM SOLVING When a plant or animal dies, it stops acquiring carbon-14 from the atmosphere. The amount y in grams) of carbon-

14 in the body of an organism after t years is y= a(0.5)^t/5730, where a is the initial amount (in grams). What percent of the carbon-14 is released each year? Round your answer to the nearest hundredth.
Mathematics
1 answer:
kykrilka [37]3 years ago
4 0

Answer:

0.01%

Step-by-step explanation:

y=a (0.5)^t/5730

y=a [(0.5)^t/5730]

when you put 0.5^1/5730

it'll give you 0.99

The "equation" is y=a(1-r)^t

so 1-0.99 is 0.01

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Y=-8x+1 find the slope and y-intercept in this equation.
vesna_86 [32]
The slope is -8 and the y intercept is 1
the slope is always the number in front of the x and the y intercept is always the number by itself
hope this helps!
5 0
2 years ago
(15.34) The level of nitrogen oxides (NOX) in the exhaust of cars of a particular model varies Normally with mean 0.21 g/mi and
MrMuchimi

Answer:

a level of significance of 0.01 = 1%

Step-by-step explanation:

given

Z = 0.0001

mean μ=0.21 g/mi

variate x= 0.21 + 0.03

standard deviation σ= 0.05 g/mi.

N = sample population  20 cars

z = (x −μ )/[σ /√N  ]

Z =\frac{x −μ}{\frac{σ}{√N} }

Z = 0.03/ (0.05/√20) = 0.03/0.0111

Z = 2.63 +- 0.0001

Z=  2.6301  or 2.6299

checking the level of significance table from a statistical book gives

a level of significance of 0.01 = 1%

therefore the null hypothesis is accepted.

7 0
3 years ago
Help me pleaseeee !!
ra1l [238]

Answer:

For x it would be 50 m2

Step-by-step explanation:

8 0
3 years ago
11. Find the average rate of change of the equation y = x2 + 4x + 1 on the interval -1 < x < 4.
coldgirl [10]

Answer:

31/5

Step-by-step explanation:

[f(4) - f(-1)] / 4-(-1)

7 0
2 years ago
Pls help i need this done very soon :
nekit [7.7K]
5x+6=1
X= -1
Because you first subtract the 6 to 1 and that equals -5 than you divide the -5 by 5 and that equals -1.
3 0
3 years ago
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