3 years ago

Solve the following system of equations graphically.

Mathematics

1 answer:

Mrrafil [7]3 years ago

8 0

Quadrant I because the point is (4,4)

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I don’t understand need help

kodGreya [7K]

Answer:

6y^2-12y-4

Step-by-step explanation:

(8y^2-5y+7) - (2y^2+7y+11)

(8y^2-5y+7)-2y^2-7y-11

Combine like terms:

6y^2-12y-4

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What is the shaded portion of the circle

blagie [28]

Answer:

$(5\pi-11.6)\ ft^{2}$

Step-by-step explanation:

we know that

The area of the shaded region is equal to the area of the sector minus the area of the triangle

step 1

Find the area of the circle

the area of the circle is equal to

$A=\pi r^{2}$

we have

$r=5\ ft$

substitute

$A=\pi (5)^{2}$

$A=25\pi\ ft^{2}$

step 2

Find the area of the sector

we know that

The area of the circle subtends a central angle of 360 degrees

by proportion find out the area of a sector by a central angle of 72 degrees

$\frac{25\pi}{360}=\frac{x}{72}\\ \\x=72*25\pi /360\\ \\x=5\pi\ ft^{2}$

step 3

Find the area of triangle

The area of the triangle is equal to

$A=\frac{1}{2}(2.9+2.9)(4)= 11.6\ ft^{2}$

step 4

Find the area of the shaded region

Subtract the area of the triangle from the area of the sector

$(5\pi-11.6)\ ft^{2}$

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2 years ago

Solve the following proportion for y.<br> y/9 = 8/11<br> Round your answer to the nearest tenth.

jek_recluse [69]

Answer: 6.5

6.5/11 ≈ 8/11

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Which function is nonlinear?

Pavlova-9 [17]

Answer:

Option C. is nonlinear.

There is no specified degree in option C's equation, so it is impossible for it to be a linear equation.

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