Solve each system by substitution. − 7x + 2y = − 19
2y − 21 = x

Answer:

a)-3>-7

b)3>-4 The symbol was preserved.

c)-6<8 The symbol was reversed.

Step-by-step explanation:

Hope this helps! :)

Answer:

13 units

Step-by-step explanation:

Answer:

1) [tex]3x^{2}[/tex]-19x-14

2) x=0, x=3

Step-by-step explanation:

1) (3x+2)(x-7)

Distribute the 3x to both x and -7, as well as the 2 to both x and - 7.

[tex]3x^{2}[/tex] - 21x + 2x -14

Combine like terms

[tex]3x^{2}[/tex] - 19x - 14

2)

In order to find the factors of x, set the expression equal to 0.

[tex]3x^{2}[/tex] - 9x = 0

Factor out the highest common multiple (3x)

3x(x-3) = 0

In order for x to satisfy the equality, you must either have a 0 in the parenthesis -> (x-3)=0 -> x =3

Or 3x = 0 -> x = 0

Hope this helps!

Answer:

I´m pretty sure it´s 2.(-3,6).

Step-by-step explanation:

Answer:

c.28

Step-by-step explanation:

Given

f(x) = 8x + 10 and g(x) = 6x - 4

f(4) = 8*4 + 10

    = 32 + 10

    = 42

g(3) = 6 * 3 - 4

      = 18 - 4

      = 14

Now

f(4) - g(3)

= 42 - 14

=28

hope it will help :)

Answer:

3

Step-by-step explanation:

d=√8-5 = √9 = 3

Answer:

nose lo que dice.....pero puedo tener esos 5 puntos......perdób

Answer:

Sorry I can't help with2.08

Hope the remaining helped

PLS mark BRAINLIEST

Answer:

i think the ans is 4(-x-1) = 12

Step-by-step explanation:

I believe it should be 5

Step-by-step explanation:

I believe this because 16÷8=2 so 10÷2=5

Answer:

3,484 meters squared

Step-by-step explanation:

Since it’s a rectangle, opposite sides are the same length. This means 2 of the sides are 67 meters each, since the length of the rectangle is 67 meters. To find the width, add the 2 sides together that we know the length of (in this case it would be 67+67) and subtract it from the total perimeter (238-[67+67]). Take the result (104) and divide it by 2 (104÷2=52). Now that we know the width is 52 meters, you can find the area by multiplying the length times the width (67*52=3,484 meters)

Remember that the perimeter is the total length around the outside of the shape, and the area is the space inside of the shape

I’m not good at explaining things but I hope this helps!

Answer:

3/18 = 6/ DG

Step-by-step explanation:

Answer:

dam nvm the dud give out the answers

Answer:

10

Step-by-step explanation:

12x-10+8x-10=180. All horizontal lines equal 180 degrees. 12x+8x=20x. -10-10=-20. 20+180=200 200 diveded by 20 is 10

Answer:

5(6+2x)

Step-by-step explanation:

Answer:

81mn

Step-by-step explanation:

3 to the power of 3 is 81

Answer:

42 laps

Step-by-step explanation:

Answer:

D

A point has a dimension of 0.

Hope this helped!

Answer and Step-by-step explanation:

So, the format you should choose is the second one.

This is what goes in each box:

[4] (p - [6]) = [12]

The 4 is multiplying the price for 1 of the items (and it is 4 because there are 4 items), the 6 is taking away 6 dollars (because coupons take away money from amount) and 12 is the total amount of money.

Now, we solve for p.

Divide each side by 4.

p - 6 = 3

Now, add 6 to each side.

p = 9.

Each item cost 9 dollars.

#teamtrees #PAW (Plant And Water)

Answer:

39

Step-by-step explanation:

Answer:

39

Step-by-step explanation:

the answer is going up by the numbers 1,2,3,4...

you start with 4 and go up by 2

you then get 6 that's when you count up 3

you get 9 and then count up 4

which is 13 count up 5

18 count up 6

24 count up 7

31 count up 8

39

Answer:

[tex]y = \frac{-3}{4}[/tex]

Step-by-step explanation:

[tex]\frac{y}{2} + \frac{1}{4} = \frac{y}{6}[/tex]

Lets take all the variable terms in L.H.S & all the constant terms in R.H.S.

(While taking a term from one side to another side , it's sign changes )

⇒ [tex]\frac{y}{2} - \frac{y}{6} = -\frac{1}{4}[/tex]

Now in L.H.S. , lets solve the fractions and reduce its numerator and denominator .

⇒  [tex]\frac{3y - y}{6} = -\frac{1}{4}[/tex]

⇒  [tex]\frac{2y}{6} = -\frac{1}{4}[/tex]

⇒  [tex]\frac{y}{3} = -\frac{1}{4}[/tex]

Lets multiplying 3 on both the sides .

⇒  [tex]\frac{y}{3} \times 3 = -\frac{1}{4} \times 3[/tex]

⇒  [tex]y = \frac{-3}{4}[/tex]

Answer:

135ft^2

Step-by-step explanation:

Area of the smaller parallelogram = Base * Height

15 = 3 * height

Height = 15/3

Height = 5ft

Since they are both similar

Height of the big parallelogram = 3(5) = 15ft

Area of the other parallelogram = 9 * 15

Area of the other parallelogram = 135ft^2

Answer:

d = 9

Step-by-step explanation:

Distance formula:

d=√((x_2-x_1)²+(y_2-y_1)²)

Your ordered pairs (-3, -4) and (6, -4)

d=√((6-(-3))²+(-4-(-4))²)

d=√((6+3))²+(-4+4))²)

d=√((9)²+(0)²)

d = √81

d = 9

Answer:

A (3 Oranges For $1.02)

Step-by-step explanation:

3 Oranges for $1.02 is $0.34 for each Orange

4 Oranges For $1.52 is $0.38 for each Orange

6 Oranges for $2.46 is $0.41 for each Orange

5 Oranges for $1.75 is $0.35 for each Orange

Which Makes The First One The Cheapest Out Of All

Answer:

46

Step-by-step explanation:

110+6x=386

Answer: 46 times

Step-by-step explanation:

Since $110 is the constant and 6 is the coefficient because it is changing with each time he rents a tennis ball. The equation is 110+6t=386 where t in this case can represent (return groundstrokes)

110+6t=386 solve for t

6t=276

t=46

So he can return ground strokes 46 times

Answer and Step-by-step explanation:

Answer is in picture.

We have to use the trig function Tangent, noted as tan.

Tan uses opposite over adjacent sides.

then, to get x by itself, you do [tex]tan^{-1}[/tex] (tan^-1)

#teamtrees #PAW (Plant And Water)

Answer:

(4,1) (5,19) (6,5) (11,80)

Step-by-step explanation:

In an ordered pair x aways comes first