All categories

2 years ago

Expand the polynomials and simplify. (2x+3y)^2

Mathematics

1 answer:

astra-53 [7]2 years ago

6 0

Answer:

4x^2+12xy+9y^2

Step-by-step explanation:

brainliest

You might be interested in

A recipe calls for mixed nuts with 50% peanuts. 1/2 pound of 15% peanuts has already been used. How many pounds of 75% peanuts n

Galina-37 [17]

Now you have

(.15)0.5 lb peanuts = 0.075 lb peanuts
0.5 lb nuts 0.5 lb nuts

for every pound of 75% mixed nuts you add, you get .75 lb peanuts, how many pounds, x, do you need to add to get the ratio 50 to 100?

0.075 lb peanuts + 0.75x lb peanuts = 50 
0.5 lb nuts + x lb nuts 100

cross multiply

(0.075 + .75x) 100 = (0.5 + x) 50
7.5 + 75x = 25 + 50x
25x = 17.5
x = 0.7 lb of 75% peanuts

6 0

3 years ago

Find the equation of a line through (2,-4) and (-7,-4)

steposvetlana [31]

---------------------------------------------
Find slope :
---------------------------------------------
$\text {Slope = } \dfrac{-4 - (-4)}{-7-2} = \dfrac{0}{-9} = 0$

When the slope is 0, the graph is a horizontal line.

Equation of the graph is y = -4

------------------------------------------------------
Answer: y = -4
------------------------------------------------------

3 0

3 years ago

The following table represents a function.

ivanzaharov [21]

The answer is B. Plug in the x values to check the y values.

6 0

2 years ago

Read 2 more answers

-10 = y/11 - 13 solve for y

Flauer [41]

Answer:

10=y/11-13

We move all terms to the left:

-10-(y/11-13)=0

-y/11+13-10=0

We multiply all the terms by the denominator

-y+13*11-10*11=0

We add all the numbers together, and all the variables

-1y+33=0

We move all terms containing y to the left, all other terms to the right

-y=-33

y=-33/-1

y=+33

6 0

2 years ago

Read 2 more answers

I need help anyone ?? please

Ulleksa [173]

Answer:

you need to show more for help

Step-by-step explanation:

5 0

2 years ago