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yKpoI14uk [10]
3 years ago
15

Hi, can someone help me with this? Solve the system of equations: Y= 2x-4 X= y+1

Mathematics
1 answer:
agasfer [191]3 years ago
7 0

Y=2x-4

X=y+1

2(y+1)-4

2y+2-4

2y-6

6=2y

6/2 =2y/2

y=3

x = 3+1

x=4

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Plss help help help can someone plss help me
vladimir2022 [97]

Answer:

1) The stars are not constant in their position.

2) No. The stars aren't in original position because of apparent movement of stars in the sky.

3) Due to rotation of earth on its axis , the stars appear to move from west to east in the sky. Actually stars don't move as they are constant in their position but they appear to move with respect to earth.

4) Both the motion of stars & motion of sun are similar because both are an example of apparent motion. Both appear to change their respective positions but in reality , sun & stars are constant in their positions. But as earth is rotating , it appears like sun & stars are changing their positions.

5 0
3 years ago
the current value of a new car is 18,000. the car will depreciate 15% per year over the next 5 year. which exponential equation
Arte-miy333 [17]

The exponential equation that models this situation is:

V(t) = 18000(0.85)^t, 0 \leq t \leq 5.

<h3>What is an exponential function?</h3>

A decaying exponential function is modeled by:

A(t) = A(0)(1 - r)^t

In which:

  • A(0) is the initial value.
  • r is the decay rate, as a decimal.

For this problem, the parameters are:

A(0) = 18000, r = 0.15.

Hence the equation for the value of the car over the next 5 years is:

A(t) = A(0)(1 - r)^t

A(t) = 18000(1 - 0.15)^t

V(t) = 18000(0.85)^t, 0 \leq t \leq 5.

More can be learned about exponential functions at brainly.com/question/25537936

#SPJ1

4 0
2 years ago
What is the mean and median for these sets (I know how to do these, I just don't have a calculator, so no need to explain) :
Setler [38]

Answer:

HI! I can get you that answer! Mean: 16.133333(countinues 3s) _First question Median: 15

Question 2: Mean_8.4666666666667

Median: 8

Step-by-step explanation:

8 0
3 years ago
What two numbers have a sum of -9 and a product of 20 ?
bixtya [17]
Hei
Here it is

-4-5=-9
-4x(-5)=20
7 0
3 years ago
What is a multiplication equation that has a solution of 12
juin [17]

Answer:

4 x 3 = 12

Step-by-step explanation:

12 x 1 = 12

6 x 2 = 12

7 0
3 years ago
Read 2 more answers
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