2 years ago

The answers..............................

Mathematics

1 answer:

HACTEHA [7]2 years ago

5 0

Answer:

DAM BROOOOO UR SCREEN.

Step-by-step explanation:

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Simultaneous equation <br> Find x and y <br> 2x+y=5<br> X+3y=5

snow_tiger [21]

$x+3y=5 \ =>\boxed{x=5-3y} \\\\ 2x+y=5 \\\\ 2(5-3y)+y=5 \\\\10-6y+y=5 \\\\ -5y=5-10 \\\\ -5y=-5 \ |:(-5) \\\\ \boxed{y=1} \\\\ x=5-3*1 \\\\ x=5-3 \\\\ \boxed{x=2}$

6 0

3 years ago

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Find solution to the system of linear equations. 5x1 + x2 = 0 , 25x1 + 5x2 = 0

Zigmanuir [339]

Answer:

the system of equation has infinite solution

Step-by-step explanation:

$5x_1 + x_2 = 0$ , $25x_1 + 5x_2 = 0$

Solve the first equation for x_2

Subtract 5x1 on both sides

$5x_1 + x_2 = 0$

$x_2 =-5x_1$

Now substitute -5x1 on second equation

$25x_1 + 5x_2 = 0$

$25x_1 + 5(-5x_1)= 0$

$25x_1-25x_1= 0$

0=0

So the system of equation has infinite solution

5 0

3 years ago

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{[14-2×3]-[18÷(12-3)]}+{42-11×3+[(65-9×5)+3]}

natali 33 [55]

Use Bidmas, solve all the inner brackets (), with first division, then multiplication then addition then subtraction

5 0

3 years ago

Simplify: 6-/18 - 3.450

grigory [225]

Answer:

-3.11666666667

Step-by-step explanation:

remove parentheses by multiplying factors.

use exponent rules to remove parentheses in terms with exponents.

combine like terms by adding coefficients.

combine the constants. hope this helps you :)

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3 years ago

Select all that apply.

Sergeu [11.5K]

I got B and D, sorry if my answers are wrong!!

5 0

2 years ago