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3 years ago

What method can be used to prove triangles congruent?

Mathematics

1 answer:

Lostsunrise [7]3 years ago

6 0

Answer:

SAS I hope this helped you:)

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A parabola has zeros at (5,0) and (-3,0) and passes through point (6,18) determine the axis of symmetry

worty [1.4K]

Answer:

The axis of symmetry is $x=1$

Step-by-step explanation:

we know that

In a vertical parabola, the axis of symmetry is equal to the x-coordinate of the vertex

In this problem we have a vertical parabola open upward

The x-coordinate of the vertex is equal to the midpoint between the zeros of the parabola

$x=\frac{5-3}{2}=1$

therefore

The axis of symmetry is $x=1$

5 0

3 years ago

I need help on this it’s about trig identities

Cerrena [4.2K]

Answer:

The answer to your question is:

Step-by-step explanation:

1.-

$\frac{1 + sin\alpha }{cos\alpha } + \frac{cos\alpha }{1 + sin\alpha } = 2 sec\alpha$

$\frac{(1 + sin\alpha)^{2} + cos^{2} \alpha }{cos\alpha (1 + sin\alpha) }$

$\frac{1 + 2sin\alpha + sin^{2} \alpha+ cos^{2} \alpha }{cos\alpha + sin\alphacos\alpha }$

$\frac{2 + 2sin\alpha }{cos\alpha+ sin\alpha cos\alpha }$

$\frac{2(1 + sin\alpha) }{cos\alpha(1 + sin\alpha ) }$

$\frac{2}{cos\alpha }$

2sec $\alpha$

2.-

sec²x - tanxsecx

$\frac{1}{cos^{2}x } - \frac{sinx}{cosx} \frac{1}{cosx}$

$\frac{1}{cos^{2} x} - \frac{sinx}{cos^{2}x}$

$\frac{1 - sinx}{cos^{2}x }$

$\frac{1 - sinx}{1 - sin^{2}x }$

$\frac{1 - sinx}{(1 - sinx)(1 + sinx)}$

$\frac{1}{1 + sinx}$

3 0

3 years ago

What's the value of given expression :<br><br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B8%20%5Ctimes%202%7D%20" id="TexForm

Drupady [299]

Answer:

$\sqrt{8 \times 2} \\ = \sqrt{16} \\ = \sqrt{4 \times 4} = 4 \\ thank \: you$

8 0

2 years ago

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I NEED HELP IN MATH!!! It’s due tonight and I’ve tried to do it and it don’t fully understand please help if u can!!!

Katyanochek1 [597]

Answer:

1. 42

2. 77

3. 87.75

4. 117

5. 119

6. 89.25

7. 39

8. 58.5

9. 218.75

Good Luck!

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3 years ago

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HELP ME PLEASEEEEEEEEEEEEEEEEEEE

aniked [119]

Answer:

the last one :)

Step-by-step explanation:

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3 years ago