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3 years ago

Solve this equation using elimination: 2X + 3Y = 16 6X - 5Y = 20

2 answers:

8 0

Another bag of marbles contains 6 blue marbles and 1 green marble. Mary and Frank will draw a blue marble followed by a green marble, without replacing the first marble. Mary says the probability will be 649, and Frank says that the probability will be17 . Who is correct?

Slav-nsk [51]3 years ago

5 0

Answer:

(5, 2 )

Step-by-step explanation:

Given the 2 equations

2x + 3y = 16 → (1)

6x - 5y = 20 → (2)

Multiplying (1) by - 3 and adding to (2) will eliminate the x- term

- 6x - 9y = - 48 → (3)

Add (2) and (3) term by term to eliminate x

0 - 14y = - 28

- 14y = - 28 ( divide both sides by - 14 )

y = 2

Substitute y = 2 into either of the 2 equations and solve for x

Substituting into (1)

2x + 3(2) = 16

2x + 6 = 16 ( subtract 6 from both sides )

2x = 10 ( divide both sides by 2 )

x = 5

solution is (5, 2 )

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Help‼️ if a number is even, then it is divisible by 2. g=14

AnnyKZ [126]

I’m pretty sure the answer is B.

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3 years ago

what is the general form for a number written in scientific notation? what are its practical applications?

patriot [66]

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3 years ago

If x=9 units, y= 3 units and h= 8 units find the area of the rhombus shown about using decomposition

PIT_PIT [208]

Answer:

72 sq. units

Step-by-step explanation:

Find the diagram attached

The rhombus is the area of the two triangles and the rectangle

Area of triangle = 1/2 * base * height

Area of triangle = 1/2 * y * h

Area of triangle = 1/2 * 3 * 8

Area of triangle = 3 * 4

Area of triangle = 12 sq.units

Area of 2 triangle = 2(12) = 24 sq. units

Area of the rectangle = length * width]

Area of the rectangle = h (x-y)

Area of the rectangle = 8(9-3)

Area of the rectangle = 8 * 6

Area of the rectangle = 48 sq. units

Area of the rhombus = 24 + 48

Area of the rhombus = 72 sq. units

5 0

3 years ago

LOTS OF BRAINLY POINTS HELP ASAP PLS TYSM

Sedbober [7]

Answer:

3/10

Step-by-step explanation:

So, you already have the experimental probability. The theoretical probability is 5/10, but that's not what you're lookig for.

5 0

2 years ago

I need to know what x is.

alukav5142 [94]

Answer:

x=5

Step-by-step explanation:

17x-3+17x+8=175

34x+5=175

x=170/34

x=5

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3 years ago