All categories

3 years ago

If you help me god bless you and your a legend

Mathematics

1 answer:

Serhud [2]3 years ago

7 0

Answer:

C. 14xy - 6y²

Step-by-step explanation:

The distributive property will essentially result in the sum of the product of the "outside term" with each of the "inside terms".

Here, the "outside term" is 2y and the "inside terms" are 7x and -3y. So:

2y(7x - 3y) = 2y * 7x + 2y * (-3y) = 14xy - 6y²

The answer is C.

You might be interested in

15PTS QUICK

lana66690 [7]

Answer:

Option B

40x + 50y = 130

5x - 4y = 16

Option C

20x + 25y = 65

-20x + 16y = 64

Step-by-step explanation:

we have

$4x+5y=13$ ----> equation a

$10x-8y=-32$ ----> equation b

we know that

If two system of equations are equivalent, then their solution is the same

Part 1)

step 1

Multiply by 10 equation a both sides

$10(4x+5y)=10(13)$

$40x+50y=130$ ----> equation a'

step 2

Divide by 2 equation b both sides

$(1/2)(10x-8y)=(1/2)(-32)$

$5x-4y=-16$ ----> equation b'

The system of equations a and b and the system of equations a' and b' are equivalent

therefore

The system of equations a' and b' have the same solution as the given system

Part 2)

step 1

Multiply by 5 equation a both sides

$5(4x+5y)=5(13)$

$20x+25y=65$ ----> equation a'

step 2

Multiply by -2 equation b both sides

$-2(10x-8y)=-2(-32)$

$-20x+16y=64$ ----> equation b'

The system of equations a and b and the system of equations a' and b' are equivalent

therefore

The system of equations a' and b' have the same solution as the given system

6 0

3 years ago

Ruiz needs to buy a countertop for a kitchen. He calculated the area to be 16 square feet. The actual area is 15.4 square feet.

igomit [66]

Percentage error $=\frac{error}{actual measurement} \times 100$
Here error = 16 - 15.4 = 0.6
Therefore, percentage error $=\frac{0.6}{15.4} \times 100=0.039 \times 100$
=3.9%

3 0

3 years ago

Read 2 more answers

Determine the diameter of the circle with the equation x 2+ y 2= 9.

kotegsom [21]

Answer: d = 6

Step-by-step explanation:

x^2 + y^2 = r^2

So r = 3 and d will be 2 x r = 6

6 0

3 years ago

(GEOMETRY PLS HELP SERIOUSLY) A treasure map says that a treasure is buried so that it partitions the distance between a rock an

pogonyaev

You have coordinates of tree T(16,21) and of rock R(3,2). Let S be a point that denotes treasure. Since treasure is buried so that it partitions the distance between a rock and a tree in a 5:9 ratio, you can state that

$\dfrac{\overrightarrow{RS}}{\overrightarrow{ST}}=\dfrac{5}{9}.$