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3 years ago

I need the right answer for this plz

Mathematics

2 answers:

Leona [35]3 years ago

5 0

Answer:

A = 18 km^2

Step-by-step explanation:

Brilliant_brown [7]3 years ago

3 0

This is a= 18
……………………..

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Help please 10 points

Olin [163]

That's a 45 degree angle

3 0

3 years ago

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Can anyone help me with my Geometry question?

WITCHER [35]

Answer:

5.37ft^2

Step-by-step explanation:

Area of the square minus area of the circle, so...

Area of the square is 5x5=25

Area of the circle is pi*2.5^2=19.63

25-19.63=5.37ft^2

7 0

3 years ago

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Solve the quadratic equation by completing the square. 6x2 + 4x - 5 = 0

Nikitich [7]

Answer:

$x_{1}=-\frac{2+\sqrt{34}}{6}$

$x_{2}=-\frac{2-\sqrt{34}}{6}$

Step-by-step explanation:

Quadratic Equation given:

$6x^2 + 4x - 5 = 0$

Start dividing both sides by 6.

$\frac{6}{6} x^2 +\frac{4}{6} x - \frac{5}{6} = \frac{0}{6}$

$x^2 +\frac{2}{3} x - \frac{5}{6} = 0$

$x^2 +\frac{2}{3} x = \frac{5}{6}$

Once, $\left( \frac{2}{3} \cdot \frac{1}{2} \right)^2=\frac{1}{9}$

$x^2 +\frac{2}{3} x+\frac{1}{9} = \frac{5}{6}+\frac{1}{9}$

$\left(x+\frac{1}{3} \right)^2 = \frac{17}{18}}$

$x+\frac{1}{3} =\pm\sqrt{\frac{17}{18}} }$

Solving $\sqrt{\frac{17}{18}}$

$\sqrt{\frac{17(18)}{18(18)}}= \sqrt{\frac{306}{324}}=\frac{3\sqrt{34} }{18} =\frac{\sqrt{34} }{6}$

Then,

$x+\frac{1}{3} =\pm\frac{\sqrt{34} }{6}$

$x =-\frac{1}{3} \pm\frac{\sqrt{34} }{6}$

$x_{1}=-\frac{2+\sqrt{34}}{6}$

$x_{2}=-\frac{2-\sqrt{34}}{6}$

6 0

3 years ago

Solve the following system of equations. What is the y value of the solution?

Svet_ta [14]

Answer:

y = 2

Step-by-step explanation:

x + 5y - 10 = 0

X = 4y - 8

since x is given as = 4y - 8 we can use this in first equation

replace x with 4y - 8

x + 5y - 10 = 0 ➡ 4y - 8 + 5y - 10 = 0 add like terms

9y - 18 = 0 add 18 to both sides of the equation

9y = 18 divide both sides by 9

y = 2

6 0

4 years ago

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Ok here we go plz help me

Pepsi [2]

Answer:

I don't have much time cause Zoom is gonna start but the answer to 8 is B

Step-by-step explanation:

The answer is B because since it's a triangle it will always add up to 180.

Triangles= 180 always

5 0

3 years ago