3 years ago

PLEASE HELP IVE BEEN STUCK ON THIS ONE FOR QUITE A WHILE.

Mathematics

1 answer:

emmainna [20.7K]3 years ago

7 0

Answer:

B. - 1/3

Step-by-step explanation:

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3 years ago

A triangle has two constant sides of length 5 feet and 7 feet. The angle between these two sides is increasing at a rate of 0.9

o-na [289]

Answer: $12.74 ft^2/s$

Step-by-step explanation:

Given

Two sides of triangle of sides 5 ft and 7 ft

and angle between them is increasing at a rate of 0.9 radians per second

let $\theta$ is the angle between them thus

Area of triangle when two sides and angle between them is given

$A=\frac{ab\sin C}{2}$

$A=\frac{5\times 7\times \sin \theta }{2}$

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$\frac{\mathrm{d} A}{\mathrm{d} t}=\frac{35\cos theta }{2}\times \frac{\mathrm{d} \theta }{\mathrm{d} t}$

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3 years ago

Using the linear combination method what is the solution to the system of linear equations 7x - 2y = -20 and 9x + 4y = -6

Ghella [55]

x should equal -2 and y should equal -3 to solve this i multiplied the first equation by 2 then got rid of the 4y and -4y then i added the 14x to the 9 equaling 23x and added the -40 to the -6 which became 23x=-46 i solved this getting -s for x, then i plugged that into the equations to get y which was -3

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3 years ago

PLEASE HELP IVE BEEN STUCK ON THIS ONE FOR QUITE A WHILE.​

PLEASE HELP IVE BEEN STUCK ON THIS ONE FOR QUITE A WHILE.