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Doss [256]
2 years ago
9

Pull out the GCF: 27x-81 Your answer

Mathematics
1 answer:
dsp732 years ago
5 0

Answer:

the gcf is 27

27(x-3)

Step-by-step explanation:

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A submarine travels 6.6 km due West from its base and then turns and travels due South for 3.9
geniusboy [140]

Answer:

7.7 km

Step-by-step explanation:

The submarine's path from its base forms a right triangle when its final position is "connected" to the base. We know that the right triangle has legs of 6.6 km and 3.9 km, and we need to find the length of its hypotenuse. To do so, we can use the Pythagorean Theorem, which states that in a right triangle, a^{2}+b^{2} =c^{2}, where a and b are the lengths of the triangle's legs and c is the length of the triangle's hypotenuse. In this case, we know what a and b are, and we need to solve for c, so after substituting the given values of a and b into a^{2}+b^{2} =c^{2} to solve for c, we get:

a^{2}+b^{2} =c^{2}

6.6^{2} +3.9^{2} =c^{2} (Substitute a=6.6 and b=3.9 into the equation)

43.56+15.21=c^{2} (Evaluate the squares on the LHS)

58.77=c^{2} (Simplify the LHS)

c^{2}=58.77 (Symmetric Property of Equality)

\sqrt{c^{2} } =\sqrt{58.77} (Take the square root of both sides of the equation)

c=7.7,c=-7.7 (Simplify)

c=-7.7 is an extraneous solution because you can't have negative distance, if that makes sense, so therefore, the submarine is approximately 7.7 km away from its base. Hope this helps!

7 0
3 years ago
What is the exact area of the following circle?
pychu [463]

Answer:

56.25 pi  cm^2

Step-by-step explanation:

To find the area of the circle,

we use the formula

A = pi r^2, where r is the radius

We know the diameter is 15 so we can find the  radius from

r = d/2  where d is the diameter

r = 15/2

A = pi ( 15/2) ^2

A = pi ( 225/4)

A = 56.25 pi  cm^2

3 0
2 years ago
Read 2 more answers
Look at the screenshot
melomori [17]

Answer:

4

Step-by-step explanation:

the graph goes from aprox (0, 1) to (2, 8)

3 0
3 years ago
Find the Fourier series of a 1 V pulse train with a 10 percent duty cycle and a period of 1 ms. In other words, this signal cons
MArishka [77]

Answer:

The answer is attached below

Step-by-step explanation:

8 0
3 years ago
What dose equal 8x3 it equals 24
Genrish500 [490]

Answer:

true

Step-by-step explanation:

3+3+3+3+3+3+3+3=24.

Mark me brainliest please ._.

8 0
2 years ago
Read 2 more answers
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