Question

Plz give me the right answer I really need help and will give you brainlist plz.

Answer 1

3(-2x-1)=2(x+5)

-6x-3=2x+10

-8x=13

x=-13/8

A)

Answer 2

Answer:

Part 1) Option A $x=-13/8$

Part 2) Option B $x=1$

Part 3) Option C $x=1/2$

Part 4) Option C $x=4$

Part 5) Option D $x=15$

Part 6) Option B $x=2\frac{1}{4}$

Part 10)  Option B $x=2$

Part 11) Option A $x=-14/9$  

Part 13) Option A $r=-3$

Part 14) Option D

Part 15) Option D

Part 16) Option C $4n-5=2n+3; n = 4$

Part 17) Option D $y=-5$

Part 18) Option D $x=-1$

Part 19) Option D distribute the $-2$ to the $3p$ and $1$; distribute the $6$ to the $4$ and $p$

Part 20) Option B  $p=-1$

Step-by-step explanation:

Part 1) we have

$3(-2x-1)=2(x+5)$

solve for x

$-6x-3=2x+10$

$2x+6x=-3-10$  

$8x=-13$

$x=-13/8$

Part 2) we have

$3(2x-1)=\frac{1}{2}(4x-2)+2$

solve for x

$6x-3=2x-1+2$

$6x-2x=-1+2+3$

$4x=4$

$x=1$

Part 3) we have

$-4(3-2x)+2x=2x-8$

solve for x

$-12+8x+2x=2x-8$

$8x=-8+12$

$8x=4$

$x=1/2$

Part 4) we have

$10(x+2)=5(x+8)$

solve for x

$10x+20=5x+40$

$10x-5x=40-20$

$5x=20$

$x=4$

Part 5) we have

$-25(x-4)=-55(x-10)$

solve for x

$-25x+100=-55x+550$

$-25x+55x=550-100$

$30x=450$

$x=450/30$

$x=15$

Part 6) we have

$-9(x-5)=x+22\frac{1}{2}$  

solve for x

remember that

$22\frac{1}{2}=\frac{45}{2}$

$-9x+45=x+\frac{45}{2}$

$x+9x=45-\frac{45}{2}$

$10x=\frac{45}{2}$  

$x=\frac{45}{20}$

convert to mixed number

$x= \frac{45}{20}=\frac{9}{4}=2\frac{1}{4}$

Part 7) The model is not included

Part 8) The model is not included

Part 9) The model is not included

Part 10) we have

$5-x=(1/2)(x+4)$

solve for x

$5-x=(1/2)x+2$

$(1/2)x+x=5-2$

$(3/2)x=3$

$x=2$

Part 11) we have

$x-2x(12-(1/2))=2(4-2x)+20$

solve for x

$x-24x+x=8-4x+20$

$x-24x+x+4x=8+20$

$-18x=28$

$x=-14/9$        

Part 12) The model is not included

Part 13) we have

$5(r-1)=2(r-4)-6$

solve for r

$5r-5=2r-8-6$

$5r-2r=-8-6+5$

$3r=-9$

$r=-3$

Part 14) and  Part 15)

the answer is the option D

Look for parenthesis and apply the distributive property; combine like terms; move your variable terms to one side and constants to the other side of the equal sign; go in reverse PEMorDAorS to isolate the variable using inverse operations

Part 16)

Let

n------> the number

we know that

$4n-5=2n+3$ -----> algebraic expression that represent the situation

solve for n

$4n-2n=3+5$

$2n=8$

$n=4$

Part 17) we have

$-2(y+2)+5y=6y+11$

solve for y

$-2y-4+5y=6y+11$

$6y-5y+2y=-4-11$

$3y=-15$

$y=-5$

Part 18) we have

$4(3x-1)=3+8x-11$

solve for x

$12x-4=8x-8$

$12x-8x=-8+4$

$4x=-4$

$x=-1$

Part 19) we have

$14 - 2(3p + 1) = 6(4 + p)$

 $14 - 6p-2 = 24+6p$ ------> distribute the $-2$ to the $3p$ and $1$; distribute the $6$ to the $4$ and $p$

Part 20) we have

$14 - 2(3p + 1) = 6(4 + p)$

step 1

distribute the $-2$ to the $3p$ and $1$; distribute the $6$ to the $4$ and $p$

$14 - 6p-2 = 24+6p$

step 2

Group terms that contain the same variable and move the constant to the other side

$6p+6p=14-2-24$

step 3

Combine like terms

$12p=-12$

step 4

Divide by $12$ both sides

$p=-1$