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3 years ago

Please helpp pleaseee

Mathematics

1 answer:

Elena L [17]3 years ago

5 0

Answer:

i belive it is 900

Step-by-step explanation:

(n-2)180

(7-2)180

(5)180

900

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A city planner is mapping out some new features for a triangle park. She sketches the park on a grid paper. The coordinates of t

Alecsey [184]

Answer:

Perhaps, she is interested in finding the area enclosed by this triangular park.

Step-by-step explanation:

The area of the triangle enclosed by the three points

A(1,1), B(1,4) and C(-3,4) in this question will be given by

|Ax ( By − Cy)+ Bx(Cy−Ay)+ Cx(Ay− By) |/2

=|1(4-4)+1(4-1)+-3(1-4)|/2=10/5= 5 sq. units.

5 0

2 years ago

What is the area of this? Please help

Slav-nsk [51]

Answer:

364 cm²

Step-by-step explanation:

Area of the figure :

Area (triangle) + Area (rectangle 1) + Area (rectangle 2) + Area (rectangle 3)
1/2 x 20 x 14 + 12 x 9 + 7 x 3 + 19 x 5
140 + 108 + 21 + 95
248 + 21 + 95
269 + 95
364 cm²

3 0

1 year ago

Read 2 more answers

Given: m∠1 = 140°, find m∠6.

zavuch27 [327]

<h2>Answer:</h2>

Let m<6 be X

140° + X = 180°

X = 180° - 140°

X =40°

5 0

2 years ago

Solve by the elimination method

Usimov [2.4K]

There is one solution. The solution of the system is (9,-5)

Option A is correct.

Step-by-step explanation:

We need to solve the system of equations by elimination method

$6x= 64+2y\\2x= -7-5y$

Rearranging the equations:

$6x-2y=64\,\,\,eq(1)\\2x+5y=-7\,\,\,eq(2)$

Eliminating y to find value of x:

Multiply eq(1) by 5 and eq(2) by 2 and add both equations:

$30x-10y=320\,\,\,\\4x+10y=-14\\--------\\34x=306\\x=\frac{306}{34}\\ x=9$

So, value of x= 9

Eliminating x to find value of y:

Multiply eq(1) by 2 and eq(2) by 6 and subtract both equations:

$12x-4y=128\\12x+30y=-42\\-\,\,\,\,-\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,+\\---------\\-34y=170\\y=\frac{170}{-34}\\ y=-5$

So, value of y = -5

There is one solution. The solution of the system is (9,-5)

Option A is correct.

Keywords: Solving system of equations

Learn more about Solving system of equations at:

#learnwithBrainly

5 0

3 years ago

How do i solve 4x - 2y = 22 and 2x + 4y = 6 using substitution and elimination?

Fiesta28 [93]

substitution and elimination means that you need to use one equation and substitute it in place of some variable in the other equation.

Consider the above two equations.

Take equation 1, which is 4x-2y=22 => x=(22+2y)/4

substitute the x value gained above in equation 2.

so, 2((22+2y)/4)+4y=6

22+2y+8y=12 => 10y = -10 => y= -1.

Substitute y= -1 in x value obtained in the beginning.

So, x= (22 - 2)/4 => 5.

There fore, x= 5 and y= -1

Hope it helps.

5 0

2 years ago

Please helpp pleaseee​

Please helpp pleaseee