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3 years ago

Solve 12=0.9a '''''''''''''''''''''''''''''''

Mathematics

1 answer:

Serggg [28]3 years ago

4 0

Answer:

13.3

Step-by-step explanation:

Because in order to get the a separated from the 0.9, you must divide the 0.9a by 0.9 to cancel the 0.9 out of the equation. That way, you are left with A. but in order to do that, you must divide both sides of the equation.

Ultimately, it ends up being 12 divided by 0.9, which is 13.3

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One question WILL GIVE BRAINLIEST - Algebra

snow_tiger [21]

Answer:

B' (5,1)

C' (3,2)

A' (3,0)

Step-by-step explanation:

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3 years ago

Find the value(s) of x such that f''(x)=0

Goryan [66]

$f(x)=\dfrac x{x^2+2}\implies f'(x)=\dfrac{2-x^2}{(x^2+2)^2}\implies f''(x)=\dfrac{2x^3-12x}{(x^2+2)^3}$

The denominator is always positive, so any $x$ for which $f''(x)=0$ is determined only by the numerator:

$2x^3-12x=0\implies f''(x)=0$
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3 years ago

Read 2 more answers

Today is my birthday! Four-fifths of my current age is greater than three-quarters of my age one year from now.

Ilya [14]

Current age = x
4/5x>3/4(x+1)
4/5x>3/4x+3/4
16/20x>15/20x+3/4
1/20x>3/4
Multiple each side by 20
x>3/4*20
x>60/4
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The smallest age you could be is 16

Hope this helps :)

4 0

4 years ago

Laboratory experiment shows that the life of the average butterfly is normally distributed with a mean of 18.8 days and a standa

inessss [21]

Answer:

a) 0.4164

Step-by-step explanation:

Mean lifespan (μ) = 18.8 days

Standard deviation (σ) = 2 days

For any given lifespan 'X', the z-score is:

$z=\frac{X- \mu}{\sigma} \\z=\frac{X- 18.8}{2}$

For X=12.04 days:

$z=\frac{12.04 - 18.8}{2} \\z=-3.38$

A z-score of -3.38 falls in the 0.036-th percentile of a normal distribution.

For X=18.38 days:

$z=\frac{18.38 - 18.8}{2} \\z=-0.21$

A z-score of -3.38 falls in the 41.68th percentile of a normal distribution.

The probability that a butterfly lives between 12.04 and 18.38 days is

$P=41.68-0.036\\P=41.64\%\ or\ 0.4164$

6 0

3 years ago

For what value of x is the equation 3(x+2)-2x=12

olga_2 [115]

Answer:

2−

148

1−

=−1.694

148

=2.361

Step-by-step explanation:

6 0

3 years ago