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3 years ago

5

Please Help!!!!!!!!!!!

1 answer:

Nezavi [6.7K]3 years ago

5 0

Answer:

C= 30

Step-by-step explanation:

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( simplify the following polynomials. All final answers must be in standard form )

Mila [183]

$\frac{6x^3-15x^2-3x}{3x} = 2 x^4 - 5 x^3 -x^2$
$\frac{7x^3-4x^2-2x}{x^2} = 7 x - \frac{2}{x} -4$

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4 years ago

At a pet store, the lizards in aquarium A have a mean length of 13 cm and a range from 9 cm to 15 cm. In aquarium B. the

alexgriva [62]

Answer:

C (The lizards in aquarium A vary in length more than aquarium B.)

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3 years ago

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Line segment JL is an altitude in triangle JKM. Which statement explains whether JKM is a right triangle? Round measures to the

natulia [17]

Answer:

C. JKM is not a right triangle because KM ≠ 15.3.

Step-by-step explanation:

We can see from our diagram that triangle JKM is divided into right triangles JLM and JLK.

In order to triangle JKM be a right triangle $KM^{2}=JK^{2}+JM^{2}$ .

We will find length of side KM using our right triangles JLM and JLK as $KM=KL+LM$ .

Using Pythagorean theorem in triangle JLM we will get,

$LM=\sqrt{JM^{2}-JL^{2}}$

$LM=\sqrt{8^{2}-5^{2}}$

$LM=\sqrt{64-25}$

$LM=\sqrt{39}=6.244997998\approx 6.24$

Now let us find length of side KL.

$KL=\sqrt{JK^{2}-JL^{2}}$

$KL=\sqrt{13^{2}-5^{2}}$

$KL=\sqrt{169-25}$

$KL=\sqrt{144}=12$

Now let us find length of KM by adding lengths of KL and LM.

$KM=12+6.24=18.24$

Now let us find whether JKM is right triangle or not using Pythagorean theorem.

$KM^{2}=JK^{2}+JM^{2}$

$18.24^{2}=13^{2}+8^{2}$

$18.24^{2}=169+64$

$18.24^{2}=233$

Upon taking square root of both sides of equation we will get,

$18.24\neq 15.264337522473748$

$18.2\neq 15.3$

We have seen that KM equals 18.2 and in order to JKM be a right triangle KM must be equal to 15.3, therefore, JKM is not a right triangle and option C is the correct choice.

6 0

3 years ago

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What is the greatest common factor for 12 and 18 and 26

serious [3.7K]

Well what you would have to do is find out what numbers can go into all of them.
the numbers are..
1 and 2 and the greatest one is 2 thats your answer
Hope this helps

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4 years ago

A sidewalk that is 2 feet wide surrounds a rectangle that is 4 feet by 6 feet. What is the area of the sidewalk in square feet?

Damm [24]

Answer:

56 sq feet

Step-by-step explanation:

The picture shows that the total is 80 and the inside is 24.

Subtract those and you get the outside area.

7 0

3 years ago

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