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olchik [2.2K]
3 years ago
15

Find value of x. using geometry

Mathematics
2 answers:
Ronch [10]3 years ago
5 0

Answer:

10.5

Step-by-step explanation:

3x - 9 = x + 12

Subtract x from both sides

2x - 9 = 12

ad 9 to both sides

2x = 21

Divide both sides by 2

x = 10.5

Shtirlitz [24]3 years ago
5 0

Answer:

these \: sides \: are \: equal \: (rhombus) \\ x + 12 = 3x - 9 \\ 2x = 21 \\ x = 10.5

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Ticket sales. stacey is selling tickets to the school play. the tickets are $8 for adults and $4 for children. she sells twice a
MrRissso [65]
Adult tickets + kids tickets = 120$
Y represents kids tickets
Z represents adult tickets

Z = twice kids tickets = 2Y

In ecuation:

Z + Y = 120$

Replace Z with 2Y

2Y + Y = 120 $

3Y= 120 / divided by 3

Y = 40$

You know the cost for 1 kid ticket

40 : 4 = 10 kids tickets sold

Z = 2x 40= 80$ for adult tickets

80:8 = 10 adult tickets sold
6 0
3 years ago
Factoring trinomials word problems.
sukhopar [10]
So see if u can factor out the trinomial.
it's factorable.
(x+3)(×-2)

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(×-2)(×+3)
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5 0
3 years ago
What is the slope of the line that passes through the points (-10, -8) and
Lemur [1.5K]

Answer:

-4

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Mr. Jones wants to add a cement path around his new pool. The pool has a radius of 7 feet. The cement path will be 1 foot wide a
Aleonysh [2.5K]

The square footage of the path is 47.1 ft²

The area of a circle is:

A = πr²

Where r is the radius of the circle.

Let us assume that the pool is a circle.

Given that the pool has a radius (r₁) of 7 feet and a path 1 foot wide would go round the pool.

Radius of pool and cement path (r₂) = 7 ft + 1 ft = 8 ft.

The square footage of the path =  πr₂² - πr₁² = π*8² - π * 7² = 47.1 ft²

Hence The square footage of the path is 47.1 ft²

Find out more at: brainly.com/question/23328170

7 0
2 years ago
Question 4
Archy [21]

Answer:

-36

Step-by-step explanation:

replace x with -5 and solve for the parenthesis and then take that number which would be -16 and multiply it by 9 which then would give you -144.  So then you would take -144 and divide it by 4 and your answer would be -36.

5 0
4 years ago
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