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3 years ago

PLEASE HELP!! MATH GENIUSES!! EXPERTS!! PLEASE HELP!!

Mathematics

2 answers:

Marysya12 [62]3 years ago

8 0

Okay there is going to be a 90°, 45°, and a 45° atleast

Zigmanuir [339]3 years ago

3 0

1) you can choose the numbers 6, 6, and 2. The two numbers 6 and 6 would help form a triangle while 2 wouldn't even work.

2) for this you can choose all the same angle measurements and lengths since a triangle congruent on all sides is an equilateral triangle.
:)))

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A $48 game has a 9.6 percent sales tax. what is the final price jncluding tax?

loris [4]

Answer:

52.61

Step-by-step explanation:

First let turn 9.6% into a decimal

0.096

Then,

48 x 0.096 = 4.608 {Round} 4.61

48 + 4.61=52.61

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1 year ago

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Answer:

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3 years ago

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Natalka [10]

Answer:

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2 years ago

) The density of oil in a circular oil slick on the surface of the ocean at a distance of r meters from the center of the slick

Feliz [49]

Answer:

Therefore the mass of the of the oil is 409.59 kg.

Step-by-step explanation:

Let us consider a circular disk. The inner radius of the disk be r and the outer diameter of the disk be (r+Δr).

The area of the disk

=The area of the outer circle - The area of the inner circle

= $\pi (r+\triangle r)^2- \pi r^2$

$=\pi [r^2+2r\triangle r+(\triangle r)^2-r^2]$

$=\pi [2r\triangle r+(\triangle r)^2]$

Since (Δr)² is very small, So it is ignorable.

∴ $A=2\pi r\triangle r$

The density $\delta (r)= \frac{40}{1+r^2}$

We know,

Mass= Area× density

$=(2r \pi \triangle r)(\frac{40}{1+r^2}})$

Total mass $M=\sum_{i=1}^n \frac{80r_i\pi }{1+r^2}\triangle r_i$

Therefore

$\sum_{i=1}^n \frac{80r_i\pi }{1+r^2}\triangle r_i=\int_0^5 \frac{80r\pi }{1+r^2}dr$

$=40\pi[ln(1+r^2)]_0^5$

$=40\pi [ln(1+5^2)-ln(1+0^2)]$

$=40\pi ln(26)$

= 409.59 kg (approx)

Therefore the mass of the of the oil is 409.59 kg.

3 0

2 years ago

The circumference of a circle is 48π units. what is the radius of the circle?

tresset_1 [31]

The radius would be 75.36. In order to receive this answer, you must do 48 times 3.14. You will then receive an answer of 150.72. Then, you have to divide 150.72 by 2 in order to obtain your final answer : 75.36.

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3 years ago