All categories

2 years ago

(3x +4y)2 is equal to

Mathematics

2 answers:

SCORPION-xisa [38]2 years ago

5 0

Answer:

9x² + 24xy + 16y²

Step-by-step explanation:

(3x + 4y)²

= (3x + 4y)(3x + 4y)

each term in the second factor is multiplied by each term in the first factor.

3x(3x + 4y) + 4y(3x + 4y) ← distribute both parenthesis

= 9x² + 12xy + 12xy + 16y² ← collect like terms

= 9x² + 24xy + 16y²

Nikolay [14]2 years ago

4 0

Answer: 6x + 8y

Hope this helps!

You might be interested in

If the straight-line distance from her home to the university is 10. 3 km in a direction 25. 0° south of east, what was her aver

Paladinen [302]

34.3 Km /h was her average velocity in km/h.

What is average velocity?

The change in position or displacement (x) divided by the time intervals (t) during which the displacement happens is the definition of average velocity.
Based on the direction of the displacement, the average velocity might either be positive or negative. Meters per second (m/s or ms-1) is the SI measure for average velocity.
The displacement of a body, or the shortest distance it must go during a trip, is calculated as the displacement multiplied by the time interval over which it covered that distance.

average velocity = Displacement / time taken

V = d/ l

V = 10.3 Km/0.300m = 34.3Km

Learn more about average velocity

brainly.com/question/862972

#SPJ4

3 0

1 year ago

A bookstore manager marks down the price of older hardcover books,which originally sell for b dollars,by 46 percent. What is the

gladu [14]

We are given original selling price of book = $b.

Price is marked down by 46%.

46% can be written as 46/100 in decimals it would be 0.46.

Therefore, markdown as a decimal is 0.46

Now, markdown is 0.46 of original price = 0.46b

Therefore, new price after marked down can be written by expression =

b - 0.46b = 0.56b.

<h3>Therefore, the expression for the sale price of the hardcover book is 0.56b.</h3>

If original retail price was = $29.00.

The sale price would be 0.56b = 29*0.56 = $15.66.

Total saving = 29-15.66 = $13.34.

Therefore, you save $13.34 by paying the sale price $15.66.

8 0

3 years ago

Read 2 more answers

What is the solution to this system of linear equations?

SOVA2 [1]

(7,3)

Step-by-step explanation:

X= -2+3y

....

-2+3y-3y=-2

-2+3y+3y=16

.......

6y=18

...

y=3

x=7

6 0

2 years ago

Read 2 more answers

Evaluate the expression when a=- 7 and x=3.<br> a-8x

FinnZ [79.3K]

Answer:

-31

Step-by-step explanation:

a - 8x will change to (-7) - 8(3) = -31

3 0

2 years ago

Read 2 more answers

The length of a rectangle is 8 1/2 inches and the width is 3 1/4 inches. What is the ratio, using whole numbers, of the length t

frosja888 [35]

Short answer 34/13
Start by converting both to improper fractions.

8 1/2 = (2*8 + 1)/2 = 17/2

3 1/4 = (3*4 + 1)/4 = 13/4

Next set up a 4 layer fraction

$\dfrac{\dfrac{17}{2}}{\dfrac{13}{4} }$

Invert the lower fraction and multiply $\dfrac{17}{2}* \dfrac{4}{13}$

Cancel the 2 and the 4 leaving you with a 2 in the numerator. $\dfrac{17*2}{13} =\dfrac{34}{13}$

5 0

3 years ago