Why are equivalent equations important when solving a system using linear combination?

Answer:

5- -1= -6

Step-by-step explanation:

think of it as being in debt, you owe someone 1 dollar than you borrowed 5 more dollars from them now you owe them 6 dollars, that's what subtracting negatives are like.

Answer:

please please answer answer

Answer:

um a is the blue and d is the one that is going up and down and bis the one that goes side to side

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Answer:

Step-by-step explanation:

1). Let the circumference C and area A of the circle are proportional,

   C ∝ A

   C = kA

   Here k = proportionality constant

   k = [tex]\frac{C}{A}[/tex]

   From the given table,

   For C = 25 cm, A = 50 cm²

   Then the value of k = [tex]\frac{25}{50}[/tex]

                                  k = [tex]\frac{1}{2}[/tex]

    For C = 50 cm, A = 201 cm²

    k = [tex]\frac{50}{201}[/tex] ≈ [tex]\frac{1}{4}[/tex]

    In both the cases proportionality constant is giving the different values.

    Therefore, Circumference and Area of the circular objects are not proportional.

2). If A = [tex]\frac{1}{2}\times r\times C[/tex]

    Then this equation will be true for all the values of r and C given in the table.

    For r = 4 cm and C = 25 cm

    A = [tex]\frac{1}{2}\times 4\times 25[/tex] = 50 cm²

    For r = 8 cm and C = 50 cm

    A = [tex]\frac{1}{2}\times 8\times 50[/tex]

    A = 200 cm²

    True for all values of 'r' and 'C'.

Answer:

665

Step-by-step explanation:

Answer:

no way

Step-by-step explanation:

addison rae? is that u?

Answer:she's a freshmen leave her alone anime girl before senpai comes for ya >_<

Step-by-step explanation:

Answer:

7 x 7 x 7

Step-by-step explanation:

When raising a number or expression to an exponent, you are really just multiplying the number or expression by itself.

That means 7³ is 7 multiplied by itself 3 times.

7 x 7 x 7

Hope this helps!

Answer:

3 hours and 25 min

Answer:

100 and even fater

Step-by-step explanation:

Answer:

100

Step-by-step explanation:ust do 900-800 dont be desperate

Answer:

B

Step-by-step explanation:

Answer:

[tex] \large \boxed{x = 4}[/tex]

Step-by-step explanation:

Goal

Given

[tex]7x - 2 = 26[/tex]

Step 1

[tex]7x - 2 + 2 = 26 + 2 \\ 7x + 0 = 28 \\ 7x = 28 \\ x = \frac{28}{7} \\ x = 4[/tex]

Step 2 (Optional)

[tex]7x - 2 = 26 \\ 7(4) - 2 = 26 \\ 28 - 2 = 26 \\ 26 = 26[/tex]

The equation is true for x = 4. Hence, the solution is x = 4.

Answer:

24,

I'm sorry i only answered the first question

Step-by-step explanation:

the volume of the solid or cube is 24

1 x 8 x 3 = 8 x 3 = 24

hope this helped you somehow

Answer:

C. Zeros at x = 2 ± √3, and D. The zeros are the hot dog prices that give $0.00 profit (no profit).

Answer:

No

Step-by-step explanation:

Triangle Inequality Theorem. The sum of the lengths of any two sides of a triangle is greater than the length of the third side.

Answer: I would say that the one which you have selected is correct.

Step-by-step explanation:

I really do hope that I am right and this helps you!

   ___

   |     |

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Answer: H

Step-by-step explanation:

Delete as this is the wrong answer. Made a typo in the answer.

Answer:

x = [tex]\frac{-212}{3}[/tex]

y = 24

Step-by-step explanation:

-3x - 8y = 20  .... (1)

-5x + y = 19   .... (2)

What we can do is take the (2) equation

-5x + y = 19

and solve for y by adding 5x to both sides

y = 24

now that we have y we substitute it in for y in equation (1)

-3x - 8(24) = 20

-3x - 192 = 20

we want to solve for x so we need to get its self.

add 192 to both sides

-3x = 212

now we divide both sides by -3. It's going to be a fraction.

x = [tex]\frac{-212}{3}[/tex]

Answer:

x=-4

y=-1

Step-by-step explanation:

-3x-8y=20

-5x+y=19

rewrite for y:

y=19+5x

substitute y

-3x-8(19+5x)=20

-3x-152-40x=20

-3x-152-40x+152=20+152

-43x=172

-43x/-43=172/-43

x=-4

substitute x

-5(-4)+y=19

20+y=19

y=-1

check:

-3(-4)-8(-1)=20

12+8=20

-5(-4)+-1=19

20-1=19

Answer:

Step-by-step explanation:

GH =~ AX

<W =~ <F

Answer:

Given:

Corresponding sides or angles are congruent

Answer:

110 = x

Step-by-step explanation:

the ? and 40º have to sum to 150º because angle d is an exterior angle

Answer:

8÷(x+3)

Step-by-step explanation:

it doesnt specify what number you add with 3 so you substitute it with a variable such as x.

The sum is adding so x +3 and then divide by 8

Answer: $55.20

Step-by-step explanation:

If $48 = 100%, 15% + bill cost = 115%

115% = 1.15

Multiply 48 × 1.15 = $55.20

Note- It would mean the world to me if you could mark me as brainliest!

Answer:

$55.20

Step-by-step explanation:

48+%15=55.20 based on how much you're bill os affects how much the tip is worth

Answer:

It should be C because it's a working function

Answer:

0.75

Step-by-step explanation:

1) y=5

2) x=(10-5y)/2

3) y=(11-6x)/-3

4) x=0

5) x=(-y+6)/3

6) p=(8+m)/2

Answer:

I'm pretty sure it's the second one!

Step-by-step explanation:

Answer:

Then you have infinite solutions

Step-by-step explanation:

if no solution, you would get sum lyke 4 = 5

if infinite soltution you would get sum lyke 3 = 3

if you have one solution, expect to get sum lyke x = 5

Answer:

x=26/7

Step-by-step explanation:

Answer:

its B

Step-by-step explanation:

when both l and m are parallel then

(4x+7) = (6x-63)

-2x = -70

-x = -70/2

-x = -35

x = 35

hope it helps and ur day will full of happiness