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NARA [144]
3 years ago
13

Solve the system of equations -2x-2y=12 and -8x-y=-15

Mathematics
1 answer:
DaniilM [7]3 years ago
6 0

Answer:

(3, −9)

Equation Form:

x = 3, y = −9

Step-by-step explanation:

Solve for the first variable in one of the equations, then substitute the result into the other equation.

Point Form:

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What is the format of this proof? Given: ∠ABC is a right angle, ∠DBC is a straight angle Prove: ∠ABD is a right angle
satela [25.4K]

Answer:

Given : ∠ABC is a right angle, ∠D BC is a straight angle.

To prove :∠AB D is a right angle.

Proof: ∠ ABC = 90°[ Given]

    ∠ D BC= 180° [ D BC is a straight line]

now, ∠ AB D and ∠ AB C are adjacent angles forming linear pair.

∠ AB D +∠ AB C =180° [By linear pair axiom]

⇒∠ AB D + 90= 180°

⇒∠ AB D=180°-90°

⇒∠ AB D=90°

∠AB D is a right angle

Hence proved.




3 0
3 years ago
Read 2 more answers
PLEASE HELP ME!!!!!!
Kisachek [45]
The answer to this is 9
hoped this helped
7 0
3 years ago
Math workshops and final exams: The college tutoring center staff are considering whether the center should increase the number
N76 [4]

Answer:

Final Exam score is the response variable.

Step-by-step explanation:

The response variable is the variable of interest. It is what is being tested for given the predictor variables. The response variable is also called the dependent variable and from our question we want to predict final exam scores would improve if attendance is made mandatory or as the question says, required. The number of times attended is the independent variable while final exam score is the response variable.

8 0
3 years ago
Solve:<br><br><img src="https://tex.z-dn.net/?f=%5Cunderset%7Bx%5Crightarrow~3%7D%7B%5Clim%7D~%5Cdfrac%7B2x%5E2-18%7D%7Bx%5E2-3x
vodomira [7]

Hello, please consider the following.

\displaystyle \lim_{x\rightarrow3}~\dfrac{2x^2-18}{x^2-3x} \\ \\ \\ =\lim_{x\rightarrow3}~\dfrac{2(x^2-3^2)}{x(x-3)} \\ \\ \\ =\lim_{x\rightarrow3}~\dfrac{2(x-3)(x+3)}{x(x-3)} \\ \\ \\ =\lim_{x\rightarrow3}~\dfrac{2(x+3)}{x} \\ \\ \\=\dfrac{2(3+3)}{3}\\ \\ \\=\dfrac{2*3*2}{3} =\Large \boxed{\sf \bf \ 4 \ }

Thank you

8 0
3 years ago
Cindy's puppy, Zoey, has a basket of toys. There are 3 balls in the basket. There are 2 times as many stuffed animals as balls i
Fudgin [204]

There are 14 toys in Zoey's basket.

Step-by-step explanation:

Given,

Balls in basket = 3

Stuffed animals = 2 times as balls in basket

Stuffed animals = 2*3 = 6

Bones = 1 fewer than stuffed animals.

Fewer means subtraction

Bones = 6-1 = 5

Total toys = Balls + stuffed animals + bones

Total toys= 3+6+5 = 14

There are 14 toys in Zoey's basket.

Keywords: addition, multiplication

Learn more about addition at:

  • brainly.com/question/10414011
  • brainly.com/question/10483199

#LearnwithBrainly

8 0
3 years ago
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