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3 years ago

100 pts if u do it right!

Mathematics

1 answer:

Reil [10]3 years ago

7 0

1.) 4x+8
——
5x-5

2) use Photomath because I’m confused

3) 4x^2+x-6
—————
X^2 + 3x

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Y = 2x + 5 and 3x + y = 40

Sophie [7]

ANSWER: x=7, y=19

Steps

1. Substitute y=2x+5

3x+2x+5=40

2. For y=2x+5 , Substitute x=7

y=2 * 7+5

3. 2 * 7+5=19

y=19

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3 years ago

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Extraneous Solutions maybe?

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3 years ago

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Whitepunk [10]

Answer:

Step-by-step explanation:

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3 years ago

What is the area of a sector with a central angle of 8 π/11 radians and a radius of 7.2 ft? use 3.14 for π and round your final

coldgirl [10]

Answer:

$59.19 ft^2$

Step-by-step explanation:

step 1

Find the area of the circle

The area of the circle is equal to

$A=\pi r^{2}$

we have

$r=7.2\ ft$

$\pi =3.14$

substitute

$A=(3.14)(7.2)^{2}$

$A=162.78\ ft^2$

step 2

we know that

The area of a circle subtends a central angle of 2π radians

using proportion

Find out the area of a sector with a central angle of 8 π/11 radians

$\frac{162.78}{2\pi }\frac{ft^2}{rad} =\frac{x}{(8\pi/11)}\frac{ft^2}{rad} \\\\x=162.78(8/11)/2\\\\x=59.19\ ft^2$

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4 years ago

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