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
laila [671]
3 years ago
7

X²+y²=25 xy=12 find the value of (3x+3y)²​

Mathematics
1 answer:
Papessa [141]3 years ago
7 0

Answer:

Step-by-step explanation:

(a + b)²=a²+2ab+b²

(3x+3y)²= (3x)²+2*3x*3y+(3y)²

=9x² + 18xy + 9y²

=9x²  + 9y² + 18xy

= 9*(x²+y²) +18xy

=9*25 + 18*12

=225 + 216

=441

You might be interested in
Divide £72 into the ratio 4 : 5.
algol13

Answer:

£32 : £40

Step-by-step explanation:

sum the parts of the ratio, 4 + 5 = 9 parts

Divide the amount by 9 to find the value of one part of the ratio

£72 ÷ 9 = £8 ← value of 1 part of the ratio, then

4 parts = 4 × £8 = £32

5 parts = 5 × £8 = £40

Then

£72 in the ratio 4 : 5 is £32 : £40

4 0
3 years ago
How many 0.4-liter glasses of water does it take to fill up a 3.4-liter pitcher. SHOW YOUR WORK!!!!!!!!!!
bulgar [2K]
To get the result we just have to divide 3.4 liter by 0.4 liter.
3.4:0.4=8.5 - its our result.
To better undestand lets think that u have 4 piece of cake and 2 person. To know how much u can give each person u have to divide 4 piece by 2 person. Its similar situation here.
5 0
3 years ago
Read 2 more answers
Dentify the radius and the center of a circle whose equation is (x – 5)² + y² = 81. The radius of the circle is ___ units.
hichkok12 [17]

Answer:

9 units

Center is at (5, 0)

Step-by-step explanation:

The radius of the circle is equal to the square root of 81

\sqrt{81} = ±9

Since the radius of a circle must be positive the answer is 9 units.

The center of the circle is at (5, 0)

7 0
3 years ago
A construction worker estimates that 2 kitchen remodels will take 12 days. How many kitchen remodels can be completed in 36 days
bagirrra123 [75]

Answer:

6 kitchen remodels

The drawing will help

3 0
3 years ago
find the product of (3x − 4)(2x2 2x − 1). 6x3 2x2 − 5x 4 6x3 14x2 − 11x 4 6x3 − 14x2 − 5x 4 6x3 − 2x2 − 11x 4
zheka24 [161]
(3x - 4)(2x^2 + 2x - 1) = 3x(2x^2 + 2x - 1) - 4(2x^2 + 2x - 1) = (6x^3 + 6x^2 - 3x) - (8x^2 + 8x - 4) = 6x^3 + 6x^2 - 3x - 8x^2 - 8x + 4 = 6x^3 - 2x^2 - 11x + 4
4 0
3 years ago
Read 2 more answers
Other questions:
  • Can someone help me pls
    13·1 answer
  • Put points A, B, C, and D on a line consecutively, so that AB = BC = CD = 6 in. Find the distance between points M and N, the mi
    5·2 answers
  • Sort each equation according to whether it has one solution, infinitely many solutions, or no solution.
    15·2 answers
  • True or False. Is (3,1) a solution to this system:
    7·1 answer
  • What is the lcm of 9 12?
    12·1 answer
  • Using the exponential function 2x + 3, what is the average rate of change between the values 1 ≤ x ≤ 5?
    6·1 answer
  • The cost c, to produce b baseball bats per day is modeled by the function c(b)=0.06b^2 - 7.2b + 390. What number of bats should
    6·1 answer
  • 3^2(3^3)^2.3^-8 simplify
    10·1 answer
  • To find the average rate (speed) of a car traveling on a highway, the distance traveler is divided by the time: R=D/T. If the di
    7·1 answer
  • Help quick or else trouble
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!