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nikitadnepr [17]
3 years ago
12

Which of these strategies would eliminate a variable in the system of equations? \begin{cases} 6x + 5y = 1 \\\\ 6x - 5y = 7 \end

{cases} ⎩ ⎪ ⎪ ⎨ ⎪ ⎪ ⎧ ​ 6x+5y=1 6x−5y=7 ​ Choose all answers that apply: Choose all answers that apply: (Choice A) A Add the equations. (Choice B) B Subtract the bottom equation from the top equation. (Choice C) C Multiply the top equation by 777, then subtract the bottom equation from the top equation.
Mathematics
1 answer:
frez [133]3 years ago
5 0

Answer:

Option A and B are correct

Step-by-step explanation:

We have to add here

6x+5y=1.

6x-5y=7

sow e will get 12x=8 , x=8/12=2/3

Option A  is correct.

If We substract bottom from furst then

6x+5y=1

-6x+5y=-7

10y=-6

y=-6/10=-3/5

we put y=-3/5 in any equation and find x

6x+5(-3/5)=1

6x=4

x=4/6=2/3

So Option B also correct.

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If an atom has a radius of 65pm, what is its circumference
SOVA2 [1]
To calculate circumference, you must use the equation (65)(2)(Pi) which would be 408.2pm. (IF YOU COUNT PI AS 3.14)
3 0
3 years ago
Bob pays $2 to see a shoe if bob has $4 before the show how much will he have left after the show
SIZIF [17.4K]

Answer:

$2

Step-by-step explanation:

4 - 2 = 2

7 0
3 years ago
Solve the equation 5(x + 2) = 6x + 3x − 14, and show your work. (5 points)
grandymaker [24]

Answer:

x = 6

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right  

Distributive Property

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality<u> </u>

<u>Algebra I</u>

  • Terms/Coefficients

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

5(x + 2) = 6x + 3x - 14

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. [Addition] Combine like terms:                                                                        5(x + 2) = 9x - 14
  2. [Distributive Property] Distribute 5:                                                                 5x + 10 = 9x - 14
  3. [Subtraction Property of Equality] Subtract 9x on both sides:                      -4x + 10 = -14
  4. [Subtraction Property of Equality] Subtract 10 on both sides:                       -4x = -24
  5. [Division Property of Equality] Divide -4 on both sides:                                x = 6
3 0
3 years ago
Question in the photo below
vichka [17]

Answer:

B

Step-by-step explanation:

Well the slope is y = -3/2x and B is the only option with that slope.

5 0
3 years ago
Read 2 more answers
What’s the volume of this
pav-90 [236]

Given:

The height of the cylinder = 12 in

The diameter of the base of the cylinder = 8 in.

To find:

The volume of the cylinder.

Solution:

The diameter of the base of the cylinder is 8 in. The radius is half of its diameter. So,

r=\dfrac{8}{2}

r=4

So, the radius of the base of the cylinder is 4 in.

The height of the cylinder, h = 12 in.

Base area of the cylinder is:

B=\pi r^2

Where, B is the base area and r is the radius.

B=\pi (4)^2

B=16\pi

So, the base area is 16\pi square inches.

The volume of the cylinder is:

V=\pi r^2h

V=Bh

Where, r is radius, h is height, B is base area.

Putting B=16\pi and h=12, we get

V=(16\pi )12

V=192\pi

So, the volume is 192\pi cubic inches.

Therefore, r=4\text{ in}, h=12\text{ in},B=16\pi \text{ in}^2,V=192\pi \text{ in}^3.

7 0
3 years ago
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