Two sides of a triangle measure

Mathematics

1 answer:

Umnica [9.8K]3 years ago

3 0

Answer:

Step-by-step explanation:

4 + 8 = 12 which is < 13.

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Multiply the polynomials (a2 + 3a – 7) and (2a2 – a + 4). Simplify the answer.

Alex_Xolod [135]

Answer correct or incorrect

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3 years ago

Write the equation of the line perpendicular to y=1/5x-11 passing through the point (0,-8)

Lilit [14]

Step-by-step explanation:

the slope of a line function is always the factor of x.

in our case here : 1/5

it is the ratio y/x indicating how many units y changes, when x changes a certain amount of units.

in our case that means y increases by 1 for every increase of x by 5.

now, the perpendicular slope simply changes x and y upside-down and flips the sign.

so, here the perpendicular slope is : -5/1 = -5

the line function looks therefore like

y = -5x + b

b is the y-intercept, and we get it by using the coordinates of the point for x and y :

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so, the full line function is

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3 years ago

Can someone help me on trigonometry ?

Olenka [21]

Using the image I gave you, you don't need to solve for x.
So tan is opposite/adjacent
sin: opposite/hypotenuse
cos: adjacent/hypotenuse
Take theta and do: adjacent/hypotenuse which is cosine
cos theta = adjacent/hypotenuse
cos theta = 1.5/9
inverse cos = 1.5/9 and the answer is: 80.4 degrees