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
lidiya [134]
2 years ago
7

3 times the sum of r and s squared minus 2 times the sum of r and d square

Mathematics
1 answer:
coldgirl [10]2 years ago
7 0

Answer:

r^2 + 6rs  - 4rd - 2d^2 + 3s^2

Step-by-step explanation:

3(r+s)^2 - 2(r+d)^2

PEMDAS

parenthesis, exponents, multiplication, division, addition, subtraction

in that order

3( r^2 + 2rs + s^2 ) - 2(r^2+ 2rd + d^2)

3r^2 + 6rs + 3s^2 - 2r^2 - 4rd - 2d^2

r^2 + 6rs  - 4rd - 2d^2 + 3s^2

You might be interested in
I need help I don’t understand how to do this
hichkok12 [17]

Answer:

your answer is 7 for this problem

4 0
3 years ago
Read 2 more answers
X^2+15x=-45 solve by factoring
Julli [10]

1 Move all terms to one side.

{x}^{2}+15x+45=0

x

2

+15x+45=0

2 Use the Quadratic Formula.

x=\frac{-15+3\sqrt{5}}{2},\frac{-15-3\sqrt{5}}{2}

x=

2

−15+3

5

,

2

−15−3

5

3 Simplify solutions.

x=-\frac{3(5-\sqrt{5})}{2},-\frac{3(5+\sqrt{5})}{2}

x=−

2

3(5−

5

)

,−

2

3(5+

5

)

6 0
3 years ago
Read 2 more answers
A litter of kittens consists of two gray females, one gray male , one black female, and three black males. You randomly pick one
sladkih [1.3K]

Answer:

There is a 3/7 chance for a gray kitten, a 4/7 chance for a male kitten, and a 1/7 chance for a gray male kitten.

Step-by-step explanation:

Total Kittens = 7 (each of the following will be out of the total amount of kittens)

2/7 = Gray Female

1/7 = Gray Male

1/7 = Black Female

3/7 = Black Male

Total Male Kittens = 4/7

Total Gray Kittens = 3/7

8 0
3 years ago
Read 2 more answers
Sandesh bought two books for Rs 480.He sold them to attain 19% profit on one and 15% loss on the other. Calculate his final gain
slamgirl [31]

Answer:

answer = profit 14.166%

7 0
2 years ago
Please help (10 points) asap
slava [35]

Answer:

A) 60 Miles per gallon

B) 10 Mins per mile

C) $0.45 per ounce

:)

4 0
3 years ago
Other questions:
  • If the exchange rate changes from​ $1.45 = 1 euro to​ $1.37 = 1​ euro, then
    10·1 answer
  • Find HCF and LCF of 377, 145and so 667​
    6·1 answer
  • Plzz HELP me<br> Solve for x. x/2.5&lt;10 x=?
    7·1 answer
  • Donnie's dad is 3 times older than Donnie, and the sum of their ages is no less than 56. What is the youngest that Donnie can be
    7·1 answer
  • Could someone answer this for me please? Thank you!
    8·1 answer
  • 7= -5x
    10·2 answers
  • Im sped Help MEEEEE PLEASEEE
    14·1 answer
  • I need help I will give brainiest​
    5·2 answers
  • Pls help meeeeeeee I do not understand
    6·1 answer
  • I WILL MARK BRAINLIST
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!