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
Natalka [10]
2 years ago
11

Expand using identities: (i) (2x- 5y)² (ii) (11a + 2) (11a – 2) (iii) (7m + 3) (7m + 3)

Mathematics
1 answer:
natulia [17]2 years ago
7 0

Answer:

Step-by-step explanation:

(2x-5y)^2

(2x-5y)(2x-5y)

4x^2-10xy-10xy+25y^2

4x^2-20xy+25y^2

------------------------------

(11a+2)(11a-2)

121a^2+22a-22a-4

121a^2-4

------------------------------

(7m+3)(7m+3)

49m^2+21m+21m+9

49m^2+42m+9

You might be interested in
28 divided by negative 7
monitta
28 divded by -7 is -4
3 0
3 years ago
Read 2 more answers
Find the volume of Prism A
Brilliant_brown [7]

Answer:

25....

Step-by-step explanation:

l *b*h....formula is applied

4 0
3 years ago
Read 2 more answers
Diego is making a large batch of pastries. The recipe calls for 3 strawberries for every apple. Diego used 52 fruits all togethe
Vitek1552 [10]
Well, we could use S for strawberries and A for apples.
So it would be: 3S=A
And in total there are 52 fruits so:
52=S+A
8 0
3 years ago
A town accumulated 2 inches of snow and the depth is increasing by 6 inches every hour. A nearby town ha accumulated 9 inches of
Svetach [21]

Answer: it will take 2.33 hours for the snow fall in both of the towns be equal.

Step-by-step explanation:

Let x represent the number of hours that it will take for the snow fall in both of the towns be equal.

A town accumulated 2 inches of snow and the depth is increasing by 6 inches every hour. This means that in x hours, the depth of snow in the town would be

6x + 2

A nearby town has accumulated 9 inches of snow and the depth is increasing by 3 inches every hour. This means that in x hours, the depth of snow in the town would be

3x + 9

For the snow fall in both of the towns be equal, the number of hours would be

6x + 2 = 3x + 9

6x - 3x = 9 - 2

3x = 7

x = 7/3 = 2.33 hours

8 0
3 years ago
Plzzz help me
Maslowich
<span>SurfaceArea = 2Π(pi) r<span>2 </span>+ </span>Π(pi) dh<span>SurfaceArea = 2(3.14)(132) + (3.14)(26)(22)
SurfaceArea = 1061.32 + 1796.08
SurfaceArea = 2857.4 square cm! </span>
3 0
3 years ago
Other questions:
  • On a road, a bike sign in the shape of an isosceles trapezoid is to be painted. The sign and its dimensions are shown below. Wha
    13·1 answer
  • Solve the system of equations by the substitution method.<br> y = 5x + 6<br> y=9x+7.
    6·1 answer
  • The formula d = rt gives the distance traveled in time t at rate r. A bicyclist rides at a
    13·1 answer
  • Good Morning
    8·2 answers
  • What is 30 divided by 41
    7·2 answers
  • 10. 2x + 7y = 1<br> 2x - 4y = 12<br> Solve for y
    5·1 answer
  • Please help me and correct answer gets brainliest
    8·1 answer
  • P{x:x is a natural number x (9​
    9·1 answer
  • Please Help! Its due in 2 hours!
    11·1 answer
  • A car salesperson had $79,327 in total monthly sales in June and $88,798 in July. The salesperson earned $3,890 in commission fr
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!