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3 years ago

BRAINLIESTT ASAP! PLEASE HELP ME :)

Mathematics

2 answers:

Sloan [31]3 years ago

8 0

<h3>Answer: B) none of the equations are identities</h3>

Explanation:

If you plug theta = 0 into the first equation and simplify, then you'll get

4*(sin^2(theta)-cos^2(theta)-tan^2(theta)) = 4*tan(theta)*csc(theta)

4*(sin^2(pi/4)-cos^2(pi/4)-tan^2(pi/4)) = 4*tan(pi/4)*csc(pi/4)

4*(1/2 - 1/2 - 1) = 4*1*sqrt(2)

-4 = 5.66

we get a false equation, so the first equation is not an identity.

---------

Plug theta = pi/4 into the second equation

17*((1-cos^2(theta))/(cos^2(theta)) = 17*sin^2(theta)

17*((1-cos^2(pi/4))/(cos^2(pi/4)) = 17*sin^2(pi/4)

17*((1-1/2)/(1/2)) = 17*(1/2)

17 = 8.5

which is a false equation, so this isn't an identity either.

AleksAgata [21]3 years ago

6 0

The answer is number 3 only the first one is an identity most definite

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sp2606 [1]

Answer:

FV= $34,222.33

Step-by-step explanation:

<u>First, we need to calculate the weekly interest rate:</u>

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3 years ago

I'm having trouble solving the system of linear equations. This is the system: 5x + 6y = 50 x - 6y = -26 Can you please help me?

natita [175]

Answer:

y = 5 ; x = 4

Step-by-step explanation:

Given :

5x + 6y = 50 - - - (1)

x - 6y = -26 - - - (2)

From (2)

x = - 26 + 6y

Put - 26 + 6y for x in (1)

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-180 = - 36y

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3 years ago

An open box is made from a 40-cm by 80-cm piece of tin by cutting a square from each corner and folding up the edges. The area

tamaranim1 [39]

Answer:

x=2

Step-by-step explanation:

let x be the edge length of the square removed at each corner;

Hence the area of the base is:

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3 years ago

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OlgaM077 [116]

Answer: d = ±10

<u>Step-by-step explanation:</u>

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3 years ago

What is an equation in slope-intercept form for the line that passes through the points (1, -3) and (3, 1)?

tensa zangetsu [6.8K]

First we need to find the slope:

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Plug in your given values from the coordinate
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Simplify (in this case divide) the slope:
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slope-intercept form is:
y=mx+b
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So far we have:
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To find b all we have to do is pick any given coordinate and plug it in:
I chose (3,1)

so we plug that in the equation
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Final answer:
y=2x-5 (D)

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