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1 year ago

Help with this please i will give brainiest if right

Mathematics

2 answers:

Crank1 year ago

8 0

Answer: 6

Step-by-step explanation:

miv72 [106K]1 year ago

5 0

The answer is 6 i think

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15 points

igor_vitrenko [27]

Answer:

3 and 2 i think

Step-by-step explanation:

7 0

2 years ago

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What is the estimated perimeter of an ellipse if the major axis has a length of 15 ft and the minor axis has a length of 7.5 ft?

miskamm [114]

Answer:

Option B is correct.

The estimated perimeter of an ellipse is 37.3ft

Step-by-step explanation:

<u>Given:</u>

Length of Major-axis (2a)=15ft

Length of minor-axis (2b)=7.5ft

For an ellipse, the perimeter (P) approximately given by:

$P\approx 2\pi\sqrt{\frac{a^2+b^2}{2}}$ , where a and b are semi major axis and semi minor axis respectively.(Use approx. value of $\pi =3.1 4$ )

Here, a=7.5ft and b=3.75ft, putting in above equation, we get

$P\approx 2\pi\sqrt{\frac{\left (7.5\right )^2+\left (3.75\right )^2}{2}}$

$P\approx 2\cdot 3.14\cdot \sqrt{\frac{56.25+14.0625}{2}}$

$P\approx\ 6.28\cdot \sqrt{\frac{70.3125}{2}}$

$P\approx\ 6.28\cdot \sqrt{35.15625}$

After solving the square-root we get,

$P\approx\ 6.28\cdot5.92927061$

$P\approx37.3ft$ .

Therefore, the estimated perimeter of an ellipse is 37.3ft.

8 0

2 years ago

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In the diagram above, find the probability of landing in the blue triangle.

Luda [366]

Answer:

wheres the diagram

Step-by-step explanation:

3 0

2 years ago

Identify the x-intercept of m(x). <br> m(x)=x^2-2x-8/x^2-x-2

SpyIntel [72]

Answer:

$\large\boxed{x-intercepts:-2\ and\ 4}$

Step-by-step explanation:

$m(x)=\dfrac{x^2-2x-8}{x^2-x-2}\\\\\text{At the beginning we de}\text{fine the domain:}\\\\D:x^2-x-2\neq0\\\\x^2-2x+x-2\neq0\\x(x-2)+1(x-2)\neq0\\(x-2)(x+1)\neq0\iff x-2\neq0\ \wedge\ x+1\neq0\\\boxed{x\neq2\ \wedge\ x\neq-1}\\================================\\\text{The x-intercept is for}\ m(x)=0.\ \text{Therefore we have the equation:}\\\\\dfrac{x^2-2x-8}{x^2-x-2}=0\iff x^2-2x-8=0\\\\x^2+2x-4x-8=0\\x(x+2)-4(x+2)=0\\(x+2)(x-4)=0\iff x+2=0\ \vee\ x-4=0\\\\x=-2\in D\ \vee\ x=4\in D$

4 0

2 years ago

A home owner is building a fence around his backyard and needs to know how much material to buy. he would need to calculate ____

valkas [14]

B.perimeter is the answer the perimeter is the outside of the house where the fence goes

4 0

2 years ago

Read 2 more answers