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
kherson [118]
3 years ago
11

Please help

Mathematics
1 answer:
irina [24]3 years ago
8 0

Answer:

x^2 -2xy -10y^2

x^2 -9xy +4 y^2

3x^3  +6x^2  -24 x +27

Step-by-step explanation:

3x^2-5xy -6y^2 -( 2x^2 -3xy+4y^2)

= 3x^2- 2x^2 -5xy +3xy-6y^2 -4 Y^2

= x^2 -2xy -10y^2


2x^2−5xy+y^2 -( x^2+4xy−3y^2)

=2 x^2 -x^2 -5xy -4xy +y^2 +3 y^2

=x^2 -9xy +4 y^2


7x^3−16x+18- (4x^3−6x^2+8x−9)

= 7x^3 -4x^3 + 6x^2-16x- 8x +18 +9

=3x^3  +6x^2  -24 x +27



You might be interested in
Fabulous fitness charges a one time fee of $90 and an additional $25 per month wonder weights charges a one time fee of only $ 2
Aleksandr-060686 [28]

Answer:

9 months

Step-by-step explanation:

Given

Fabulous fitness charges a one-time fee of $90 and an additional $25 per month

let the number of months be x

and the total charges be y

y= 25x+90---------1

Wonder weights charges a one-time fee of only $ 27 dollars but charge an additional $32 each month

let the number of months be x

and the total charges be y

y= 32x+27------------2

Required

The value of x, that is the number of months

Step two:

Equating both equations we have

25x+90=32x+27

collect like terms

25x-32x=27-90

-7x=-63

7x=63

divide both sides by  7

x= 63/7

x= 9 months

6 0
2 years ago
36 3⁄4 gallons of water come out of a hose in 15 minutes. Write the ratio in fractional form and determine the water rate in gal
Brrunno [24]

Answer:

Step-by-step explanation:

If 3⁄4 gallons of water come out of a hose in 15 minutes, to calculate the rate of water that comes out in an hour (60 minutes), we will use the expression;

3/4 gallons = 15 minutes

x gallons = 60minutes

cross multiply

15x = 3/4 * 60

15x = 180/4

15x = 45

x = 45/15

x = 3/1

x = 3:1

Hence the water rate in gallons per hour is 3 gallons per hour

7 0
3 years ago
Which graph best represents a function with a range of all real numbers greater than or equal to 3
Anna35 [415]

Answer:

b

Step-by-step explanation:

6 0
2 years ago
Help please!! Stuck on this question!! ∠ABC is adjacent to ∠CBD. If the m∠ABC=4x+23, m∠CBD=6x+7, and m∠ABD=130°, what is the mea
Ulleksa [173]

Answer:

63 degrees

Step-by-step explanation:

add 4x + 23 and 6x + 7, then equal that to 130. When you find x, plug it into 4x+23 and get 63.

3 0
3 years ago
If the numerator and the numerator of a fraction are subtracted 1, the resulting fraction is 2/3, if the resulting fraction is i
tino4ka555 [31]

Answer:

Simplify the expression.

Exact Form:

1 /2

Decimal Form:

0.5

8 0
2 years ago
Read 2 more answers
Other questions:
  • HELP ME <br><br><br> The question in in the picture
    9·1 answer
  • Ryan feeds his dog 2/3 pounds of dog food for each meal. Ryan has just bought 18 pounds of dog food. For how many meals will the
    5·2 answers
  • Write (x+1)(x+2) without parentheses
    6·1 answer
  • 14:48
    10·1 answer
  • Write an equation to solve each problem and then solve it. a The sum of three consecutive integers is 84. Find the integers.
    12·1 answer
  • My ones digit is twice the hundreds digit
    10·1 answer
  • The figures below are similar.
    7·1 answer
  • A sequence has an initial value (I) of -17 and its fourth term (a4) is 35. What is its general equation? Its 14th term?
    11·1 answer
  • Find the equation (in terms of x) of the line through the points (-2,-5) and (2,3)
    8·1 answer
  • Please help me!!! <br> I forgot how to do this
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!