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3 years ago

Does anyone know this?

Mathematics

2 answers:

jonny [76]3 years ago

6 0

Answer:

1.37×10^9 is in scientific notation

Marina CMI [18]3 years ago

3 0

1.37x10^9 is the correct answer:)

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Image down below if it is correct i will give brainliest

inysia [295]

Answer:

it would be 17 im positive

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

we choose a sample of size 100 from a population of monthly cable bills having standard deviation $20 If we assume the populatio

igor_vitrenko [27]

Answer:

0.0062

Step-by-step explanation:

Find the standard error.

σ = 20 / √100

σ = 2

Find the z-score.

z = (x − μ) / σ

z = (70 − 65) / 2

z = 2.5

Find the probability.

P(Z > 2.5) = 1 − 0.9938

P(Z > 2.5) = 0.0062

8 0

3 years ago

I need help with 4 of these questions

NemiM [27]

1.
$30x + 20 = y$
2.
$y = 60 - 10x$
3.
$y = .35x + 1.5$
4.
$y = 109 - .6x$
Tell me if this helps!!

3 0

3 years ago

John wants to nail a thumbtack on his circular board, pictured below. If the thumbtack is equally likely to be placed anywhere o

Nikitich [7]

Answer: A. 51%

Step-by-step explanation:

Area of circle = $\pi r^2$ , where r = radius of the circle.

In the figure below, we have the complete question.

According to that,

Radius of outer circle = 7ft

Radius of inner circle = 5ft

The probability that the thumbtack will be placed on the inner circle

$=\dfrac{\text{Area of inner circle}}{\text{Area of outer circle}}\\\\=\dfrac{\pi (5)^2}{\pi (7)^2}\\\\=\dfrac{25}{49}$ [π is canceled from numerator and denominator

in percent, $\dfrac{25}{49}\times100=51.0204081633\%\approx51\%$

So, the probability that the thumbtack will be placed on the inner circle = 51%

Hence, the correct option is A. 51%.

6 0

3 years ago

What is equivalent to

eimsori [14]

Answer : The expression which is equivalent to $\sqrt[4]{9}^{\frac{1}{2}x}$ is $9^{(\frac{1}{8}x)}$ .

Step-by-step explanation :

The given expression is:

$\sqrt[4]{9}^{\frac{1}{2}x}$

As we know that:

$\sqrt[4]{x} =x^{\frac{1}{4}}$

So, by solving the above expression, we get:

$\Rightarrow 9^{(\frac{1}{4}\times \frac{1}{2}x)}$

By multiplying the power of 9, we get the following expression.

$\Rightarrow 9^{(\frac{1}{8}x)}$

Hence, the expression which is equivalent to $\sqrt[4]{9}^{\frac{1}{2}x}$ is $9^{(\frac{1}{8}x)}$ .

6 0

3 years ago