3 years ago

Find the solution of the system of equations. 3x+2y=-16 -3x-8y=46

Mathematics

1 answer:

11111nata11111 [884]3 years ago

8 0

Answer:

(-2,-5)

Step-by-step explanation:

(-2,-5)

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eduard

Answer:

Tens, 70, 7x10'1

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3 years ago

A car is traveling along a test track in the desert at a constant rate of 85 feet per second The test track has a length of 10,0

jeyben [28]

Answer:

foot marker 320 at t=0

Step-by-step explanation:

8 sec x 85 ft/s =680 ft

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3 years ago

in circle O the radius is 4ft and the measure of minor arc ab is 120 degrees find the length of minor arc ab to the nearest inte

KIM [24]

Answer:

$8\:\text{ft}$

Step-by-step explanation:

The length of the arc is proportional to the degree measure it in encompasses. Since there are 360 degrees in a circle and the arc is 120 degrees, the arc's length will be $\frac{120}{360}=\frac{1}{3}$ of the circle's length (circumference).

The circumference of a circle is given by $2\pi r$ , where $r$ is the radius of the circle. Therefore, the circumference of the circle is $2\pi(4)=8\pi$ . As we found earlier, the length of the arc is $\frac{1}{3}$ of this circumference. Therefore, the arc's length is $8\pi\cdot \frac{1}{3}=\frac{8\pi}{3}$ .