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3 years ago

PLEASE HELP ME I NEED HELP DESPERATELY!!!!

Mathematics

1 answer:

IceJOKER [234]3 years ago

5 0

I hope this helps, pls tell me if my way of answering is wrong
Answer:
2x-3y=4
x-2y=4

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What is the value of<br> 3x² + 2y3<br> when x = -4 and y = -2

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Geometry help please. Thank you. I picked C but that answer is wrong. What term Describes RT?

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RT is an angle bisector of the triangle

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3 years ago

Use the quadratic formula to solve x2 + 9x + 10 = 0.<br> What are the solutions to the equation?

vampirchik [111]

Answer:

$\large\boxed{x=\dfrac{-9\pm\sqrt{41}}{2}}$

Step-by-step explanation:

$\text{The quadratic formula of}$

$ax^2+bx+c=0$

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$\text{We have}\ x^2+9x+10=0\\\\a=1,\ b=9,\ c=10\\\\\text{substitute:}\\\\b^2-4ac=9^2-4(1)(10)=81-40=41>0\qquad _{\text{two solutions}}\\\\\sqrt{b^2-4ac}=\sqrt{41}\\\\x=\dfrac{-9\pm\sqrt{41}}{2(1)}=\dfrac{-9\pm\sqrt{41}}{2}$

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In the right triangle ABC shown, c=17ft and angle A=30 degrees Determine side a

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Using relations in a right triangle, considering c as the hypotenuse, we have that the length of side A is: $a = 8.5\sqrt{3}$

<h3>What are the relations in a right triangle?</h3>

The relations in a right triangle are given as follows:

The sine of an angle is given by the length of the opposite side to the angle divided by the length of the hypotenuse.

The cosine of an angle is given by the length of the adjacent side to the angle divided by the length of the hypotenuse.

The tangent of an angle is given by the length of the opposite side to the angle divided by the length of the adjacent side to the angle.

From the information given, we can build the following relation:

cos(A) = a/c.

$\frac{\sqrt{3}}{2} = \frac{a}{17}$

$a = \frac{17\sqrt{3}}{2}$

$a = 8.5\sqrt{3}$

More can be learned about relations in a right triangle at brainly.com/question/26396675

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2 years ago

4 hours a week for a month. how many hours you have

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7 days a week

4x7=28

About 4 weeks each month

28x4=112

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