3 years ago

Using scientific notation, what is the solution to (8 * 104) + (7.2 * 103)?

Mathematics

1 answer:

ch4aika [34]3 years ago

5 0

Answer:

$8.72 \times {10}^{4}$

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How many lines of symmetry does a regular decagon have? 8 10 11 12

bixtya [17]

The number of sides is the same as the number of lines of symmetry and the order of rotational symmetry.

So, a regular decagon would have 10 lines of symmetry.

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3 years ago

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A company that packages salted and unsalted mixed nuts received a complaint that claimed that the company’s salted packages cont

Eduardwww [97]

Answer:

$H_0 : \mu_1 - \mu_2 = 0$

$H_a : \mu_1 - \mu_2 \ne 0$

Step-by-step explanation:

Let the salted package be represented with 1 and the unsalted, 2.

So:

$\mu_1:$ Mean of salted package

$\mu_2:$ Mean of unsalted package

Considering the given options, the null hypothesis is that which contains =.

So, the null hypothesis is:

$H_0 : \mu_1 - \mu_2 = 0$

The opposite of = is $\ne$ . So, the alternate hypothesis, is that which contains $\ne$

So, the alternate hypothesis is:

$H_a : \mu_1 - \mu_2 \ne 0$

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2 years ago

Is the correctx 25<28

trapecia [35]

Answer:

Yes

Step-by-step explanation:

25 is less than 28

28 is greater than 25

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2 years ago

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Find the distance between these two points (-6, -5) and (2, 0)

Charra [1.4K]

Answer:

$\sqrt{89}$

Step-by-step explanation:

Use Distance Formula

$\sqrt{(x_{2}-x_{1} )^{2} + (y_{2}-y_{1} )^{2} }$

Substitute

$\sqrt{(-5-0)^{2}+(2+6)^{2} }$

Simplify

$\sqrt{(-5)^{2}+(8)^{2} }$

Simplify

$\sqrt{25+64}$

Add

$\sqrt{89}$

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3 years ago

Hey i need help with number 8 and 9 thanks!

snow_lady [41]

Answer:

8 9.8 - 6.4n

9 15 - j/2

Step-by-step explanation:

2.8 - 4.4n - 2n +7

= 2.8+7 -4.4n -2n

= 9.8 - 6.4n

11 + (-3) - 1/8 j - 3/8 j +7

= 11 - 3 - 1/8 j - 3/8 j + 7

= 11 - 3 + 7 - 1/8 j - 3/8 j

= 15 - 4/8 j

= 15 - j/2

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2 years ago