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rjkz [21]
3 years ago
8

A.(0,-3) B.(3,0) C.(0,3) D.(-3,0) Help please

Mathematics
1 answer:
Vinvika [58]3 years ago
6 0

Answer:

Step-by-step explanation:

the solution to the system

= find the intersection of two lines

method( one )

solve the equations ( find(x , y) )

( 1 ) y = -x +3

( 2 ) y = x - 3

now , we let ( 1 ) + (2 )

we have 2y =0  ,thus y = 0

from ( 1 ) y = - x +3 , we know y = 0  ,

we rewrite ( 1 ) as 0 = -x + 3,thus x = 3

method( two)

see the intersection point of two lines

so the ans is B.(3 , 0)

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Answer:

this is the answer unless you did it backwards

Step-by-step explanation:

3.467406380027739e-4

8 0
3 years ago
A rope of length 18 feet is arranged in the shape of a sector of a circle with central angle O radians, as shown in the
creativ13 [48]

Answer:

A(\theta)=\frac{162 \theta}{(\theta+2)^2}

Step-by-step explanation:

The picture of the question in the attached figure

step 1

Let

r ---> the radius of the sector

s ---> the arc length of sector

Find the radius r

we know that

2r+s=18

s=r \theta

2r+r \theta=18

solve for r

r=\frac{18}{2+\theta}

step 2

Find the value of s

s=r \theta

substitute the value of r

s=\frac{18}{2+\theta}\theta

step 3

we know that

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A=\pi r^{2}

The complete circle subtends a central angle of 2π radians

so

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Let

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\frac{\pi r^{2} }{2\pi}=\frac{A}{\theta} \\\\A=\frac{r^2\theta}{2}

substitute the value of r

A=\frac{(\frac{18}{2+\theta})^2\theta}{2}

A=\frac{162 \theta}{(\theta+2)^2}

Convert to function notation

A(\theta)=\frac{162 \theta}{(\theta+2)^2}

6 0
4 years ago
What is negative 7 minus negative 2
zalisa [80]

Answer:

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Step-by-step explanation:

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Example: If you owe someone $7, and you give them $2, how much do you still owe? You are owing him $7 so it's a negative and you give him $2 which is a negative as well since you are giving it to him. So, to answer how much do you still owe, you would add $2  to the $7 you owed, so now, you owe him $5, which is a negative since you OWE him.

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Which property allows you to write the expression
umka2103 [35]

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the associative property allows the numbers to add regardless of how you group the numbers

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Find the area of the equilateral triangle
uranmaximum [27]

Answer:

Step-by-step explanation:

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                               √3          h

sin 60 degrees = ------- = --------

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and so h = the height of the triangle =  -----------

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The area of this triangle is (1/2)(base)(height), which here is:

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A = ---------------

               8                                

8 0
3 years ago
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