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ella [17]
3 years ago
8

At a parking garage you can park underground or above ground. The lowest part of the underground parking is 40 feet below ground

level. The highest part of the parking garbage is 20 feet above ground level. The limousine parking area is 24 feet below ground level. Use positive and negative numbers to represent to locations, with respect to ground level, of the three different parts of the parking garage. Which park of re parking garage is closest to the gourd level?
Mathematics
1 answer:
Misha Larkins [42]3 years ago
3 0
The limousine parking area is the closest
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Which statements about square roots are true? Check all that apply.
USPshnik [31]

Answer:

The only correct answer is:

All positive numbers have two square roots

Step-by-step explanation:

This is true because in any situation all positive numbers have two square roots. For example, the square root of 25 is +/- 5 which means that 5 is a square root (because 5x5=25) and -5 is a square root (because -5x-5=25).

The others such as 18 = 9, 149 = 7, and 25 = 5 are all false statements.

5 0
3 years ago
A contractor has installed a silt fence around an area that is semi-circular and level to prevent soil from the construction sit
monitta
We know is a semi-circle, so let us use the equation for the area of a circle instead, and then, half it
so, the diameter is 1100, meaning the radius is half that, or 550

so...\textit{area of a circle}=\pi r^2\qquad r=radius=\frac{diameter}{2}=\frac{1100}{2}=550
\\ \quad \\
\textit{area of a semi-circle}=\cfrac{\pi r^2}{2}\impliedby \textit{enclosed acres}
\\ \quad \\
\textit{circumference of a circle}=2\pi r
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\textit{circumference of a semi-circle}=\cfrac{2\pi r}{2}\impliedby \textit{linear feet of fence}
6 0
3 years ago
State the x- and y-intercepts of each equation. Then use the intercepts to graph the equation.
Sidana [21]

Answer:

X=3/4 y= 3

Step-by-step explanation:


7 0
3 years ago
What are the answers to these 2 question 4&5 PLZ HELP
Ahat [919]
The first problem:

y = -2 x²  ⇒⇒⇒ x² = -y/2 →(1)33 x² + y² = 27 → (2)
By substitution from (1) at (2) with the value of x²
∴ 33 (-y/2) + y² = 27
∴ y² - 16.5 y - 27 = 0
a = 1 , b = -16.5 , c = -27
∴ y= \frac{-b \pm  \sqrt{b^2-4ac} }{2a} = \frac{16.5 \pm  \sqrt{(-16.5)^2-4*1*(-27)} }{2*1}
∴ y = 18 or y = -3/2
By substitution from at (1) with the value of y
for y = 18   ⇒⇒⇒ x² = -18/2 = -9 (unacceptable)
for y = -3/2 ⇒⇒⇒ x² = -(-3/2)/2 = 3/4
∴ x= \pm \sqrt{ \frac{3}{4} } = \pm  \frac{ \sqrt{3} }{2} 

The correct options are 2 , 7
Solution of the system of equations is 
( \frac{ \sqrt{3} }{2} ,  \frac{-3}{2} )
and   
( -\frac{\sqrt{3} }{2} ,  \frac{-3}{2} )
==================================
The second problem:
The general equation of the hyperbole is 
\frac{x^2}{a^2} - \frac{y^2}{b^2} =1

Transverse axis is horizontal 

The equation if the asymptotes are y = \pm \frac{b}{a}x
For the given equation:
\frac{x^2}{225} -  \frac{y^2}{36} = 1
a² = 225 ⇒⇒⇒ a = √225 = 15
b² = 36   ⇒⇒⇒ b = √36 = 6
∴ the slope of the <span><span>asymptotes = </span>b/a   and  -b/a
</span><span>
</span><span>b/a = 6/15 = 2/5
</span><span>
</span><span>-b/a = -6/15 = -2/5
</span><span>
</span><span>∴ m = 2/5   and   m = -2/5
</span>






3 0
3 years ago
Please help
Goshia [24]
It forms Obtuse angle......
6 0
3 years ago
Read 2 more answers
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