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3 years ago

PLEASE HELP ANSWER ME THIS 4 - 9 !!!

Mathematics

1 answer:

stellarik [79]3 years ago

3 0

Answer:

-45

Step-by-step explanation:

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The equation |2x – 12|= 10 has two solutions.<br> The sum of those two solutions is

zlopas [31]

Answer:

-5 and +5

Step-by-step explanation:

add twelve to both sides

New equations: 2x= -+10

Divide by 2 on both sides

x=-5, +5

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3 years ago

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Solve the triangle A=21 C=105 c=5

gregori [183]

Answer:

Granted that uppercase letters are the angles measurements and lowercase letters are the side lengths. I also was unable to round as I don't know to what decimal you need to round to.

First to find the measure of angle B, we must subtract A and C from 180

$180-21-105=54$

B=54

Next, we can use the law of sines in order to find the measures of a and b

As a reminder, The law of sines is

$\frac{a}{sinA} =\frac{b}{sinB} =\frac{c}{sinC}$

First, lets solve for b

$\frac{b}{sin54}=\frac{5}{sin105} \\\\b=\frac{(5)sin54}{sin105}\\\\b=4.187780119$

Next lets solve for a

$\frac{a}{sin21}=\frac{5}{sin105} \\\\a=\frac{(5)sin21}{sin105}\\\\a=1.85504901$

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3 years ago

Compare. Write <,>, or =. (Example 1)

Vitek1552 [10]

Answer:ed44

Step-by-step explanation:

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3 years ago

Which function describes this graph a. y=(x+5)(x-4) b. y=(x-3)(x-6) c. y=x^2-2x+4 d. y=x^2*9x+18

lara [203]

Answer:

I believe that the answer is B

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3 years ago

What are the solutions of x² + 6x - 6 = 10?

Likurg_2 [28]

Answer: x=- 8 or x=2

Step-by-step explanation:

1. To solve this problem you can applly the quadratic formula, which is shown below:

$x=\frac{-b+/-\sqrt{b^{2}-4ac}}{2a}$

2. The quadratic equation is:

$x^{2}+6x-6-10=0\\x^{2}+6x-16=0$

3. Then:

a=1

b=6

c=-16

4. Therefore, when you substitute these values into the quadratic formula, you obtain the following result:

$x=\frac{6+/-\sqrt{6^{2}-4(1)(-16)}}{2(1)}$

$x_1=-8\\x_2=2$

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3 years ago

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