1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Katen [24]
3 years ago
10

Simplify -3y(y + 2)^2 - 5 + 6y

Mathematics
2 answers:
ser-zykov [4K]3 years ago
7 0

Answer:

That'll help a lot of people in the future ^.^

Step-by-step explanation:

tigry1 [53]3 years ago
5 0

Answer:

-3y^3 - 12y^2 - 6y - 5.

Step-by-step explanation:

-3y(y + 2)^2 - 5 + 6y

= -3y(y^2 + 4y + 4) - 5 + 6y

= -3y^3 - 12y^2 - 12y - 5 + 6y

= -3y^3 - 12y^2 - 6y - 5.

You might be interested in
Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth.
Bad White [126]

Answer:

The final answers are x = 1 OR x = -3.

Step-by-step explanation:

Given the equation is x^2 -3 = -2x

Rewriting it in quadratic form as:- x^2 +2x -3 = 0.

a = 1, b = 2, c = -3.

Using Quadratic formula as follows:- x = ( -b ± √(b² -4ac) ) / (2a)

x = ( -2 ± √(4 -4*1*-3) ) / (2*1)

x = ( -2 ± √(4 +12) ) / (2)

x = ( -2 ± √(16) ) / (2)

x = ( -2 ± 4 ) / (2)

x = (-2+4) / (2) OR x = (-2-4) / (2)

x = 2/2 OR x = -6/2

x = 1 OR x = -3

Hence, final answers are x = 1 OR x = -3.

8 0
3 years ago
Read 2 more answers
3. A rectangular prism has dimensions of ½ 2, and 7/2 in.
sp2606 [1]

Answer:

answer c is 28 cubes

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
In ΔBCD, the measure of ∠D=90°, the measure of ∠C=77°, and CD = 41 feet. Find the length of BC to the nearest foot.
OLga [1]

Answer:

182 ft

Step-by-step explanation:

When you are not given a diagram, always draw one for yourself (see diagram).

When you have a right triangle (triangle with 90° angle), you can use the trigonometry ratios, You can remember them using SohCahToa. It is read like this:

<u>s</u>inθ = <u>o</u>pposite/<u>h</u>ypotenuse           Soh

<u>c</u>osθ = <u>a</u>djacent/<u>h</u>ypotenuse          Cah

<u>t</u>anθ = <u>o</u>pposite/<u>a</u>djacent                Toa

"θ" means the angle of reference (the angle you are talking about).

We are looking for the length of BC, which is the <u>hypotenuse</u>. I labelled it "d" (lowercase D) because it is opposite to ∠D.

We know ∠C = 77°. This will be our angle of reference (replace θ).

The side we know is DC, also known as "b" (lowercase B) because it's opposite to ∠B. "b" is the <u>adjacent</u> side when θ = C because "b" is touching ∠C.

Take the general trig. formula that has <u>hypotenuse</u> and <u>adjacent</u>: (cosine ratio)

cosθ = adjacent/hypotenuse

Substitute the variables specific for this problem.

cosC = b/d

Substitute the values you know.

cos77° = (41 ft) / d

Isolate "d" to the left side

dcos77° = d*\frac{41ft}{d}     Multiply both sides by "d"

dcos77° = 41 ft                          

dcos77° / cos77° = 41 ft / cos77°        Divide both sides by cos77°

d = 41 ft / cos77°                      Input into calculator

d = 182.261874....... ft           Unrounded answer

d ≈ 182 ft                       Rounded to nearest foot (whole number)

Remember d = BC. It's often easier to use one letter for calculations.

Therefore the length of BC is about 182 feet.

8 0
3 years ago
In parallelogram WXYZ, what is CY?<br> CY=___ ft
dangina [55]
<span>The correct answer is 11 ft.

Explanation:
The diagonals of a parallelogram bisect each other. This means that the portion marked x+4 is the same length as the portion marked 2x-7; this gives us the equation x+4=2x-7.

Subtract x from each side:
x+4-x=2x-7-x
4=x-7.

Add 7 to both sides:
4+7=x-7+7
11=x</span>
6 0
3 years ago
Read 2 more answers
Find j. 6 + 2(3j – 2) = 4(1 + j)
Sindrei [870]

Answer:

j=1

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • Find the unknown side length for the rectangle. 
    11·2 answers
  • oindexter has a credit card that uses the average daily balance method. For the first 15 days of a 31-day billing cycle, his bal
    9·2 answers
  • Can someone please help me
    7·1 answer
  • .75(x+10)=2+.5(x+4) HELP ME PLEASE THIS IS A TIMED QUIZ!!!!!
    8·2 answers
  • Write your answer in the form y=my+b
    10·1 answer
  • Marcus is 66 inches tall. This is 20 inches less than 2 times William's height.
    13·1 answer
  • 100 points!!!Please help me I suck at math
    11·2 answers
  • STD 10
    8·1 answer
  • Great White Sharks can grow up to 36 feet in length. Suppose a shark is
    11·1 answer
  • 25/100 simplified ? and if there’s any work pls show it
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!