3 years ago

Explain number 2 & 3 please

1 answer:

7 0

1. 3x - 2y = 0 => y = 3/2x
4x + 2y = 14<=> 4x + 2*(3/2x) = 14<=> 7x = 14<=> x = 2 & y = 3
2.3p + q = 7=> q = 7 - 3p
2p - 2q = -6<=> 2p - 2*(7-3p) = -6<=> 2p - 14 + 6p = -6<=> 8p = -6 + 14 = 8<=> p = 1 & q = 4
3.3x - 2y = 1=> x = (1+2y)/3
8x + 3y = 2<=> 8*(1+2y)/3 + 3y = 2<=> 8*(1+2y)/3 - 2 = -3y<=> 3*(8*(1+2y)/3 - 2) = -3*(3y)<=> 8*(1+2y) - 6 = -9y<=> 8 + 16y - 6 = -9y<=> 2 = -25y<=> y = -2/25 & x = 7/25

You might be interested in

Divide.

Nataliya [291]

Answer:

2/7

Step-by-step explanation:

The quotient is ...

$\dfrac{-16}{-56}=\dfrac{2\cdot8}{7\cdot8}=\boxed{\dfrac{2}{7}}$

A common factor of -8 can be cancelled from numerator and denominator.

3 0

2 years ago

Help Thrhfjfhfhhfhfhfjf

12345 [234]

Answer: 5

Step-by-step explanation:

a^2 + b^2 = c^2

12^2 + x^2 = 13^2

144 + x^2 = 169

x^2 = 25

square root both sides

x = 5

to check, do 12^2 + 5^2 =169

sqrt of 169 is 13

hope this helps

4 0

2 years ago

Here is a picture of a cube, and the net of this cube. What is the surface area of this cube? Enter your answer in the box. ft²

kobusy [5.1K]

The surface area of the cube is 1536 square feet because (16×16)×6=1536 square feet. Hope it help!

3 0

2 years ago

Read 2 more answers

Which of the following terms is defined as a set of all points in a plane that are a given distance from a point?

Ira Lisetskai [31]

Answer:

hhhhhshshdhdhdshsjssjjsjdjdjd

7 0

3 years ago

How to remove Dec in casio calculator? 0

vladimir1956 [14]

Answer:

htgjyk

Step-by-step explanation:

8 0

2 years ago