100 points for 4 questions!a brother out!

1. which ordered pair is a solution of the system below?

{y+2=x

y=2x−5}

2.solve the system of equations

{x−4y=3

2x+y=−3}

write your answers as an ordered pair.

3. find the solution of the inequality

−4x+2≤−10

x≤2

x≥2

x≤3

x≥3

4. what is the slope of the line with the equation 3y+5x=4

-5

−5/3

3/5

3

The answer to the questions

yes

step-by-step explanation:

always plug in x. in this case, x equals 4.

i'm going to first solve 4(2+3x)

1) 4(2+3(4)) use pemdas to solve.

i'm going to multiply whats in the parenthesis first, so 3 times 4=12.

2)4 (2+12) i'm then going to multiply 4 by both numbers in the parenthesis (because multiplying comes before adding)

4 times 2= 8.   4 times 12= 48

4) (8+48)= 56 (answer)

i'm then going to solve 8+12x and plug in 4 for x.

1) 8 +12(4)

multiplying comes before adding, so i'm gonna multiply 12 and 4.

12 times 4= 48.

2) 8+48=56

both equal the same!

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.