What does
-$20 -$15 +$30 $2
Equal

Answer:

a) (+) × (?) = (+)

(?) = (+)

b) (-) × (+) = ?

? = (-)

c) (?) × (-) = ?

? is undefined

Step-by-step explanation:

a) (+) × (?) = (+)

From the given equation in the question, by dividing both side of the equation by (+), we have;

((+) × (?))/(+) = (+)/(+)

(?) = (+)/(+) = (+)

Therefore, we have;

(+) × (+) = (+)

(?) = (+)

b) (-) × (+) = ?

From the given equation in the question we apply the operation rules as follows;

(-) × (-) = (+)

(-) × (+) = (-)

Therefore;

(-) × (+) = ? = (-)

? = (-)

c) (?) × (-) = ?

From the rules of multiplication, we have;

(-) × (-) = (+)

(+) × (-) = (-)

Therefore, when (?) = (-), ? = +, from which we have;

(?) ≠ ?, which is an error

Similarly, when (?) = (+), ? = -, therefore, (?) and ?, always changes sign

Therefore, the equation, (?) × (-) = ?, is undefined.

Answer:

"Evaluation" mostly means "simplifying an expression down to a single numerical value". Sometimes you will be given a numerical expression, wher all you have to do is simplify; that is more of an order-of-operations kind of question. In this lesson, I'll concentrate on the "plug and chug" aspect of evaluation: plugging in values for variables, and "chugging" my way to the simplified answer.

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer:

40x8 is 320. 320x6 is 1,920 that's your answer

Answer:

Step-by-step explanation:

1a. 2x - 4y = 2

   -x  + 4y = 3

x = 5

-5 + 4y = 3

4y = 8

y = 2

(5, 2)

1b. 2x + 3y=1

     -2x + 2y = -6

      5y = -5

       y = -1

     2x - 3 = 1

    2x = 4

    x = 2

   (2, -1)

2a.  x + 2y = 4

       2x - 5y = -1

     -2x - 4y = -8

      2x -  5y = -1

    -9y = -9

      y= 1

2x - 5 = -1

 2x = 4

  x = 2

(2, 1)

2b. 4x + 2y = 4

       x - 2y = -5

       5x = -1

        x= -1/5

    -1/5 - 2y = -5

    -2y = -4 4/5

      y= 12/5

(-1/5, 12/5)

3. 5x + 3y = 85

  11x + 5y = 163

25x + 15y = 425

-33x - 15y = -489

 -8x = -64

x = 8 regular

5(8) + 3y = 85

40 + 3y = 85

3y = 45

y = 15 mini bouquets    

(8 regular, 15 mini bouquets)

4a. 6x + 12y = -6

     18x - 12y = - 162

24x = -168

x = -7

3(-7) - 2y = -27

-21 - 2y = -27

-2y = -6

y= 3

(-7, 3)

4b. 3(6 -y) - 2y = 38

     18 - 3y - 2y = 38

     18 - 5y = 38

    -5y = 20

    y = -4

x = 6 + 4

x = 10

(10, -4)

Answer:

Step-by-step explanation:

2 squartroot 3

The length (JL) of the right-angle triangle will be 1.732 units.

It's a form of a triangle with one 90-degree angle that follows Pythagoras' theorem and can be solved using the trigonometry function.

In the right triangle shown, angle ∠K = 60° and KL is 2. Then the measure of the length JL will be given by the sine the angle ∠K. Then the equation is given as,

JL / KL = sin ∠K

h / 2 = sin 60°

h / 2 = √3 / 2

h = √3

h = 1.732 units

The length (JL) of the right-angle triangle will be 1.732 units.

More about the right-angle triangle link is given below.

https://brainly.com/question/3770177

#SPJ2

Answer:

the missing length is 14 feet.

Step-by-step explanation:

a = L × W

168ft² = 12 × W     - divide both sides of the equation by 12

                             - 168 ÷ 12 = 14

168ft² = 12 × 14

Answer:

40b

Step-by-step explanation:

40b-56+56

40b

hope this helps

Answer:0

Step-by-step explanation: I had used my Scientific calculator

Answer:

Both of them would have a 1/6 chance of being chosen

Step-by-step explanation:

Sorry I don't know if this is the answer you are looking for :(

Answer:

2/6 is read as "2 out of 6" or "2 in 6"

Step-by-step explanation:

Since there are 6 sides on a dice you have a 2 in 6 chance of rolling either a 4 or a 6. The probability of rolling one over the other would be 1/6

Hope this helps!

Answer:

B. Area B = 17 x 3 C. Area A=11 x 12

Answer:

Step-by-step explanation:

Check by direct substitution.  If we begin by checking x = 3/2, we substitute 3/2 for x in (3x - 2)(x + 5), obtaining (9/2 - 2)(3/2 + 5), which is NOT zero.  Therefore x = 3/2 is not a solution.

(3*5−2)(5+5)=0  False.  x = 5 is not a solution.

(3*[-5]−2)([-5+5)=0  True.  x = -5 is a solution

x = 2/3:  (3*2/3 - 2)( ) = 0.  True  x = 2/3 is a solution

x = -2/3:  ( )( ) = -17 1/3;  so x = -2/3 is not a solution

x = -3/2:  ( ) ( ) = -22 3/4; so x = -3/2 is not a soution

Answer:

a rectangular prism and cylinder.

Answer:

Its   A) a rectangular prism and a cylinder on edge

Step-by-step explanation:

Answer:

C.

Step-by-step explanation:

use the pythogorean theorem a^2 + b^2 = c^2

Answer:

[tex]3cm,5cm,9cm[/tex]

Step-by-step explanation:

[tex] {c}^{2} = {a}^{2} + {b}^{2} [/tex]

[tex]c = \sqrt{ {a}^{2} + {b}^{2} } [/tex]

[tex]9 { = }^{?} \sqrt{ {3}^{2} + {5}^{2} } [/tex]

[tex]9 { = }^{?} \sqrt{9 + 25} [/tex]

[tex]9 { = }^{?} \sqrt{34} [/tex]

[tex]9 \neq 5.8309518948453[/tex]

[tex]3cm,5cm,9cm[/tex]

Answer:

12 cents

Step-by-step explanation:

Answer:

2x+3x+x-30=180(sum of interior angle of triangle)

6x=180+30

x=210/6=35

Answer:

2x+3x+x-30=180

6x=180+30

x=210/6=35

Step-by-step explanation:

Answer:

1/6y+1/6(y+12)-2... so the third one

Step-by-step explanation:

1/6y+1/6(y+12)-2

1/6y+1/6y+2-2

2/6y

Reduces to 1/3y

Answer: (-4,-2)

(2y)-7y=10

-5y=10

y=-2

X=2(-2)

X=-4

(-4)-7(-2)=10

-4+14=10

10=10

Answer:

2 3/8

The denominator is 8 because there are 8 total lines

how you get 2 is because you passed the 2 lines and if you count the lines it goes up to three

Answer: (3,5)

Step-by-step explanation:

Answer:

The answer is (16, 4)

Step-by-step explanation:

Solve for the first variable in one of the equations, then substitute the result into the other equation.

~Hoped this helped~

It says that there was an error with my answer, but I don't know what, so I screenshotted what I typed and attached them as 4 images below:

Answer:

29 coins

Step-by-step explanation:

Larry needs to collect [tex]60\%[/tex] of the coins still [tex]0.6[/tex]. [tex]2000-1952=48(+1)[/tex] because you're including 1952 [tex]=49[/tex]. [tex]49×0.6=29.4≈49[/tex].

Answer:

The measure of what???

Answer:

Length + Width = 8 ft

Step-by-step explanation:

"The perimeter of a rectangle is 16 ft."

A perimeter is the sum of four sides of a rectangle.

OR...

Perimeter = Side 1 + Side 2 + Side 3 + Side 4

A rectangle has "matching sides", so...

Length: Side 1 = Side 3

Width: Side 2 = Side 4

Therefore we can just say that:

Perimeter = (Length * 2) + (Width * 2)

We can pull the 2 out:

Perimeter = 2 * (Length + Width)

Since Perimeter = 18

16 = 2 * (Length + Width)

Divide both sides by 2

8 = Length + Width

Length + Width = 8 ft

Answer

Step-by-step explanation:

1. 9.2

2.4.1

3.9.2

4.43.3

Answer:

1. r= 4.6 in, d= 4.6×2=9.3in

2. d= 8.2 cm, r= 8.2/2=4.1cm

3. d= 18.4 ft, r= 18.4/2=9.2ft

4. r= 21.65 yds, d=21.65×2=43.3yds

Answer:

360 degrees over n

Step-by-step explanation:

Answer:

[tex]A[/tex] ≈ [tex]127.39[/tex] [tex]ft^{2}[/tex]

Step-by-step explanation:

[tex]A = a^{2}+2a\sqrt{\frac{a^{2}}{4}+h^{2} }[/tex]

a (base edge) = 6

h (height) = 7