All categories

3 years ago

Add and subtract polynomials

Mathematics

1 answer:

ziro4ka [17]3 years ago

4 0

Answer: $8w^2-7w+7$

Step-by-step explanation:

$x=7w^2+4w-6\\y=w^2-11w+13\\x+y=?$

$7w^2+4w-6+w^2-11w+13$

$8w^2-7w+7$

You might be interested in

What is 5 4<br> _ divided by _<br> 6 12

Ivanshal [37]

Answer: 5/12

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

You randomly draw a marble out of a bag that contains 202020 total marbles. 121212 of the marbles in the bag are blue. What is \

Vitek1552 [10]

Answer:

Step-by-step explanation:

Probability is defined as the likelihood or chance that an event will occur. IT is expreesed as shown;

Probability = Expected outcome of event/total outcome of event

If a bag contains 20 total marbles, then the total outcome of event is 20.

If 12 blue marbles are selected from the bag, the expected outcome of event will be 12.

Probability of drawing a blue marble P(draw a blue marble)= 12/20

= 0.60 (to 2dp)

8 0

2 years ago

You have 42 ft. of fencing (1 ft. segments) to make a rectangular garden. How much should each side be to maximize your total ar

Verizon [17]

Answer:

$Length=10.5\ ft$

$Width=10.5\ ft$

$Area=110.25\ ft^{2}$

Step-by-step explanation:

Let

x----> the length of the rectangular garden

y---> the width of the rectangular garden

we know that

The perimeter of the rectangle is equal to

$P=2(x+y)$

we have

$P=42\ ft$

$42=2(x+y)$

simplify

$21=(x+y)$

$y=21-x$ ------> equation A

Remember that the area of rectangle is equal to

$A=xy$ ----> equation B

substitute equation A in equation B

$A=x(21-x)$

$A=21x-x^{2}$ ----> this is a vertical parabola open downward

The vertex is a maximum

The y-coordinate of the vertex is the maximum area

The x-coordinate of the vertex is the length side of the rectangle that maximize the area

using a graphing tool

The vertex is the point $(10.5,110.25)$

see the attached figure

$x=10.5\ ft$

Find the value of y

$y=21-10.5=10.5\ ft$

The garden is a square

the area is equal to

$A=(10.5)(10.5)=110.25\ ft^{2}$ ----> is equal to the y-coordinate of the vertex is correct

6 0

2 years ago

How much time passed between 12:03 and 12:45

kow [346]

Answer:

42 seconds

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Which expression is equivalent to 3x^-6y^-3/15x^2y^10 ? Assume x=0 and y=0

Anit [1.1K]

Find the attachment below

7 0

3 years ago

Read 2 more answers