2/3x - 1/2y = 3 |multiply both sides by 6

4x - 3y = 18

1/2x + y = 5 |multiply both sides by 2

x + 2y = 10

Answer: 4x - 3y and x + 2y = 10.

7 0

3 years ago

Find the value of unknown angle

trapecia [35]

Answer:

x + 50° + 70° = 180°

or, x + 120° = 180°

or, x = 180° - 120°

•°• x = 60°

Step-by-step explanation:

x + 50° + 70° = 180° ( Due to Straight line )

4 0

3 years ago

Write 0.0007654 * 10^0 in scientific notation, then state the order of magnitude for it.

Bas_tet [7]

remember that to put a number in scientific notation is necessary to have the first digit of the number different to 0, so

$0.0007654\cdot10^0=7.654\cdot10^{-4}$

to calculate the order of magnitude, if the number is greater than 3.16, we assume it as a 10, so in this case as 7.654 > 3.16 we get that the order is

$10\cdot10^{-4}=10^{-3}$

So the order is 10^-3

5 0

1 year ago

What 2 number makes 4 by subtraction

Andrew [12]

Answer:

21-17=4

Step-by-step explanation:

like that?

8 0

3 years ago