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
qwelly [4]
3 years ago
15

What is the sum of 3x^3-2x+8, 2x^2+5x and x^3+2x^2-3x-3 PLEASE HELP

Mathematics
2 answers:
sdas [7]3 years ago
8 0

Answer:

The sum of given expressions is 4x^3+4x^2+5.

Step-by-step explanation:

The given expressions are

3x^3-2x+8,2x^2+5x,x^3+2x^2-3x-3

We have find the sum of all these expressions.

3x^3-2x+8+2x^2+5x+x^3+2x^2-3x-3

Combine like terms.

(3x^3+x^3)+(2x^2+2x^2)+(-2x+5x-3x)+(8-3)

4x^3+4x^2+(0)+(5)

4x^3+4x^2+5

Therefore the sum of given expressions is 4x^3+4x^2+5.

ss7ja [257]3 years ago
4 0
When adding/subtracting variables you can only add/subtract those variable that are of the same power....

3x^3-2x+8+2x^2+5x+x^3+2x^2-3x-3

(3x^3+x^3)+(2x^2+2x^2)+(-2x+5x-3x)+(8-3)

4x^3+4x^2+5

You might be interested in
Ella is Bono motorcycle and he’s taking out a loan in the amount of $15,000 her choice is for the loan or a 36 month loan at 6.5
klemol [59]

Answer:

Step-by-step explanation:

Step-by-step explanation:

The formula for simple interest is expressed as

I = PRT/100

Where

P represents the principal

R represents interest rate

T represents time in years

I = interest after t years

Considering the 36-month loan,

T = 36 months = 36/12 = 3 years

P = $15000

R = 6.5%

Therefore

I = (15000 × 6.5 × 3)/100

I = 292500/100

I = $2925

Considering the 48-month loan loan,

T = 48 months = 48/12 = 4 years

P = $15000

R = 7.5%

Therefore

I = (15000 × 7.5 × 4)/100

I = 450000/100

I = $4500

The difference in the amount of interest Ella would have to pay for these two loans is

4500 - 2925 = $1575

4 0
3 years ago
Please help i have an assignment due TODAY i need to get this done
wel

Answer:

r = 50 degrees.

Step-by-step explanation:

r = 50 degrees ( vertical angles are congruent).

3 0
2 years ago
Read 2 more answers
Which of the following rules represents a dilation? A. (x, y) → (x − 3, y + 5) A. , (x, y) → (x − 3, y + 5) , B. (x, y) → (−y, x
murzikaleks [220]

Answer:

35

Step-by-step explanation:

mutilply the 3 by the 9 subtract dez uts

7 0
3 years ago
What is the perimeter of a rectangle with a length of 48 inches and a width of 16 inches
VARVARA [1.3K]

Answer: 128 inches

Step-by-step explanation:

let's start with the perimeter: the perimeter is the total length to the sides/edges of a shape.

since we're dealing with a rectangle, there will be 4 sides

two lengths & two widths

so 48+48+16+16=128 inches

8 0
3 years ago
Read 2 more answers
In his first year, a math teacher earned $32,000. Each successive year, he
Ivan

Answer:

Step-by-step explanation:

Each successive year, he

earned a 5% raise. It means that the salary is increasing in geometric progression. The formula for determining the nth term of a geometric progression is expressed as

Tn = ar^(n - 1)

Where

a represents the first term of the sequence(amount earned in the first year).

r represents the common ratio.

n represents the number of terms(years).

From the information given,

a = $32,000

r = 1 + 5/100 = 1.05

n = 20 years

The amount earned in his 20th year, T20 is

T20 = 32000 × 1.05^(20 - 1)

T20 = 32000 × 1.05^(19)

T20 = $80862.4

To determine the his total

earnings over the 20-year period, we would apply the formula for determining the sum of n terms, Sn of a geometric sequence which is expressed as

Sn = (ar^n - 1)/(r - 1)

Therefore, the sum of the first 20 terms, S20 is

S20 = (32000 × 1.05^(20) - 1)/1.05 - 1

S20 = (32000 × 1.653)/0.05

S20 = $1057920

3 0
3 years ago
Other questions:
  • Sarahs investment in stock grew 16% to $522.How much did she invest.
    15·1 answer
  • Clark has 20 trading cards and he buys (p) trading cards from the store. He gave his friend Jenny (k) trading cards as a gift fo
    13·1 answer
  • A paperback book is shaped like a rectangular prism. The cover of the book measures 5 inches by 8 inches, and the book is 2 inch
    13·2 answers
  • Pls help<br> simplify 24x2 − 52x + 20
    13·2 answers
  • the approximate Half-Life of titanium-44 is 63 years. how long will it take a sample to loose 75% of its titanium-44? explain Wh
    7·1 answer
  • Which function has the same range as y=csc x?
    15·2 answers
  • What is the answer to this question please help
    15·1 answer
  • a bag contains blue, green, yellow, and red marbles. The probability of drawing a yellow marble is 3/20. What is the probability
    13·1 answer
  • The velocity of a particle moving along a straight line is given by v(t)=6t2+4t−5 cm/sec at time t seconds with initial position
    13·1 answer
  • Whst is the correlation coefficient for the data shown in the table​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!