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Setler79 [48]
3 years ago
10

Any mind helping? 15 Points! :>

Mathematics
2 answers:
shepuryov [24]3 years ago
7 0

Answer:

(63a+54b) and (2xy+11yz)

Step-by-step explanation:

9*7a is 63a

9*6b is 54b

2x*y is 2xy

11z*y is 11yz

Hitman42 [59]3 years ago
4 0
1. 63a+54b
2. 2xy+11zy
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What are the solutions to the systems?<br><br> y=x^2-4x-2<br> y=x-2
kirill115 [55]
<span>y=x^2-4x-2
y=x-2

x^2-4x-2=x-2\\\\x^2-4x-2-x+2=0\\\\x^2-5x=0\\\\x(x-5)=0\\\\x=0 \ or \  x-5=0

x=0 or x=5 

y = x - 2
1)
x=0
y = 0 - 2= -2
2)
x=5
y=5-2=3

Answer
x=0 , y=-2
or
x=5 , y=3</span>
6 0
3 years ago
Solve by substitution please??? Immediate help!
marta [7]
Solve for the first variable in one of the equations, then substitute the result into the other equation.
3. (1/2, -1,2)
4. (2, -4)
You can get step by step at:
https://www.mathpapa.com/algebra-calculator.html
3 0
3 years ago
use elimination to solve. For a production of sweeney Todd in Las Vegas, orchestra seats cost $42 and mezzanine seats cost $25.
lidiya [134]

They bought 8 orchestra seats and 6 mezzanine seats.

Step-by-step explanation:

Cost of one orchestra seat = $42

Cost of one mezzanine seat = $25

No. of people = 14

Amount spent = $486

Let,

x be the number of orchestra seats

y be the number of mezzanine seats

According to given statement;

x+y=14     Eqn 1

42x+25y=486    Eqn 2

Multiplying Eqn 1 by 25;

25(x+y=14)\\25x+25y=350\ \ \ \ Eqn\ 3

Subtracting Eqn 3 from Eqn 2 to eliminate y;

(42x+25y)-(25x+25y)=486-350\\42x+25y-25x-25y=136\\17x=136

Dividing both sides by 17

\frac{17x}{17}=\frac{136}{17}\\x=8

Putting x=8 in Eqn 1

8+y=14\\y=14-8\\y=6

They bought 8 orchestra seats and 6 mezzanine seats.

Keywords: linear equation, elimination method

Learn more about elimination method at:

  • brainly.com/question/11258952
  • brainly.com/question/11343416

#LearnwithBrainly

5 0
4 years ago
According to the data reported by the New York State Department of Health regarding West Nile Virus for the years 2000-2004, the
hjlf

Answer:

31 human cases.

Step-by-step explanation:

The least squares line equation for the number of reported dead birds (x), versus the number of human West Nile virus cases (y) is

y = -10.2638 + 0.0491x

If the number dead birds reported in a year is 844, then we have to find the numbers of human cases of West Nile virus.

To find the numbers we will plug in the value of x = 844 in the linear equation.

y = -10.2638 + 0.0491(844)

  = -10.2638 + 41.4404

  = 31.1766

  ≈ 31

Therefore, 31 human cases can be expected.

8 0
3 years ago
More than 340 million people visit theme parks each year. Do you think it is because of the roller coasters? You can find 624 ro
lidiya [134]

Answer:

the answer is c

Step-by-step explanation:

because a statistical question is that some thing that you know you the answer and so that was my answer

HOPE THAT HELPED YOU :00000000

7 0
3 years ago
Read 2 more answers
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