2 years ago

‼️I NEED IT RN‼️

1 answer:

5 0

Answer:

Use both methods to calculate the sale price of an item that costs $140 and has a discount of. 40%. 140 x.40 = 56. 140-56 +84. 140x.60 = $84.

Step-by-step explanation:

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In a right triangle, if cos x = 1/2, then what is tan x?

Masteriza [31]

The value of tan x when cos x= 1/2 is; √3

<h3>Right-angled triangles</h3>

From Trigonometric identities of right Triangles;

It follows that;

cos x = adj/hyp

Hence, the opposite of angle X is;

Opp = √(2²-1²)

Opp = √3.

Hence, it follows that tan x;

tan x = opp/adj = √3/1

Hence, the value of tan x = √3.

Read more on right triangles;

brainly.com/question/20087965

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2 years ago

Find the roots of the quadratic equation x^2 – 8x = 9 by completing the square. Show your work.

forsale [732]

Answer:

x = -1

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Step-by-step explanation:

First you have to equals the equation to zero, then you have to find two numbers that their sum equals 8 and multiplied equals -9. In this case, those numbers are -1 and 9.

$x^2-8x=9\\x^2-8x-9=0\\(x+1)(x-9)=0\\$

After you find those numbers, you split the equation and equals each term to zero.

$(x+1)=0, x=-1\\(x-9)=0, x=9\\$

So the answer is x=-1 and x=9

Hope you understand!

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3 years ago

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Margaret [11]

Answer:

honestly im trying to figure it out right now will get back to you when i figure it out.

Step-by-step explanation:

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3 years ago

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The answer is: <em>2 pages per minute</em>

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