2 years ago

What is the result of adding 2x+7y=4 and -2x-8y=-2

Mathematics

1 answer:

Anika [276]2 years ago

6 0

Answer:

x = 2 + 3.5y

Step-by-step explanation:

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-3(z-8)+10=-5 What is z equal to?

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3 years ago

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An arc with length 5 pi over 4 inches is formed by a 15 degree central angle what is the radius of the circle

Natalka [10]

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Radius of the circle is 15 inches.

Step-by-step explanation:

Relation between length of arc, radius and the angle subtended by the arc on center is:

$\theta = \dfrac{l}{r} ..... (1)$

where $\theta$ is the central angle in radians subtended by arc

$l$ is the length of arc

$r$ is the radius of arc

We are Given the following details:

$l = \dfrac{5\pi}{4}\ inch$

$\theta = 15^\circ$

We know that $\pi \ radians = 180 ^\circ$

Converting $\theta$ to radians:

$\theta =\dfrac{\pi}{180} \times 15$ radians

Putting the values of $\theta$ and $l$ to find the value of $r$

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2 years ago

Determine the intercepts of the line. 7x-5=4y-6

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