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3 years ago

Please if you can try your best and help solve this

Mathematics

2 answers:

Arada [10]3 years ago

8 0

X= 47.5 degrees... it has to equal 100 degrees

ziro4ka [17]3 years ago

6 0

Answer:

x = 47.5

Step-by-step explanation:

The vertical angle theorem states that if two angles are vertical, they are congruent, so the two angles you gave are congruent.

2x + 5 = 100

2x = 95

x = 47.5

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Solve 6^x+2 = 10 for x using the change of base formula

pashok25 [27]

Answer:

$x\approx-0.7149$

Step-by-step explanation:

$\displaystyle 6^{x+2}=10\\\\\log_6(6^{x+2})=\log_6(10)\\\\x+2=\frac{\log(10)}{\log(6)}\\\\x+2\approx1.2851\\\\x\approx-0.7149$

Recall that the change of base formula is $\displaystyle \log_a(b)=\frac{\log(b)}{\log(a)}$

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2 years ago

Question 1

stiv31 [10]

B, C, and D are the correct answers

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3 years ago

I really need help I’m very confused

Vaselesa [24]

Answer:

10: -11n^5

12: 6k^2 -6k+7

Step-by-step explanation:

Ok so what your gonna do is add or subtract the ones with the same exponent.

so -15+4= -11 since they are both n^5 you can add them so your answer is:

-11n^2

now you have 8k^2-k-5k+7-2k. so you are gonna rearrange them so the same exponents are together.(keep the sign in front in front, if no sign it is positive)

8k^2-2k^2-5k-k+7

add like exponents

6k^2-6k+7

6 0

3 years ago

<img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B2x%7D%20%2B%2012%20%3D%20x%20%2B%208%20" id="TexFormula1" title=" \sqrt{2x} + 12

Helga [31]

First note that $x\ge0$ ; otherwise $\sqrt{2x}$ is undefined as long as we're only looking for real solutions.

We can write

$\sqrt{2x}+12=x+8$
$\sqrt{2x}=x-4$
$2x=(x-4)^2$
$2x=x^2-8x+16$
$x^2-10x+16=0$
$(x-8)(x-2)=0$

$\implies x=8,x=2$

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3 years ago

Geometry help please. Answer choices: A, B, C, or d. Picture beloe.

ira [324]

Answer:

Step-by-step explanation:

you reverse the numbers in the y spot, so if they are negative make them positive, vise versa

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3 years ago