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2 years ago

I'll give brainliest!!!! help!

Mathematics

2 answers:

Valentin [98]2 years ago

5 0

Answer:

I'll write something just to help that person be the brainliest

Step-by-step explanation:

EastWind [94]2 years ago

3 0

The answer is A just trust me

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Solve for x in the equation.

labwork [276]

Answer:

The solution is $\displaystyle x=1\pm \sqrt{47}$ . Fourth option

Explanation:

Solve for x:

$2x^2+3x-7=x^2+5x+39$

Move all the terms from the right to the left side of the equation, a zero in the right side:

$2x^2+3x-7-x^2-5x-39=0$

Join all like terms:

$x^2-2x-46=0$

The general form of the quadratic equation is:

$ax^2+bx+c=0$

Solve the quadratic equation by using the formula:

$\displaystyle x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

In our equation: a=1, b=-2, c=-46

Substituting into the formula:

$\displaystyle x=\frac{-(-2)\pm \sqrt{(-2)^2-4(1)(-46)}}{2(1)}$

$\displaystyle x=\frac{2\pm \sqrt{4+184}}{2}$

$\displaystyle x=\frac{2\pm \sqrt{188}}{2}$

Since 188=4*47

$\displaystyle x=\frac{2\pm \sqrt{4*47}}{2}$

Take the square root of 4:

$\displaystyle x=\frac{2\pm 2\sqrt{47}}{2}$

Divide by 2:

$\displaystyle x=1\pm \sqrt{47}$

First option: Incorrect. The answer does not match

Second option: Incorrect. The answer does not match

Third option: Incorrect. The answer does not match

Fourth option: Correct. The answer matches exactly this option

8 0

2 years ago

What is msu? 49° 77° 98° 161°

givi [52]

Answer:

77°

Step-by-step explanation:

$\\ T = \frac{1}{2} (RU - SU)\\ \\ 21 =\frac{1}{2}(119 - SU)\\ \\ 42 = 119 - SU\\ SU=77$

4 0

2 years ago

Read 2 more answers

4 1\10÷2 <img src="https://tex.z-dn.net/?f=4%20%20%20%5Cfrac%7B1%7D%7B10%3F%7D%20%20%5Cdiv%202" id="TexFormula1" title="4 \

lakkis [162]

2.05 I think if the question was just 4 1/10 ÷2

5 0

2 years ago

Read 2 more answers

Anyone a single pringle and i need help 500 divided by 23 times 3

baherus [9]

Answer:

65.21739130434783

Step-by-step explanation:

5 0

1 year ago

Eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeebrainliest

weeeeeb [17]

Answer:

1/3

Step-by-step explanation:

Divide the numerator and denominator by 6.

6/18 = 1/3

5 0

2 years ago