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
Inessa05 [86]
3 years ago
6

4. Multiply or divide : i) (a+b) (a-b) ii) (4b +5a) ÷ 2 b​

Mathematics
1 answer:
IgorC [24]3 years ago
4 0

Answer:

1. a²-b²

2.4b² + 5ab/2

Step-by-step explanation:

1:. it's a formula of a²-b² so, it can be solved like this and

2: I'm not sure about 2nd one

You might be interested in
An unknown capital gets added 5% interest per year by a bank. After how many years does the capital get three times as big, cons
shepuryov [24]

Answer:

After 23 years , the capital will get three times as big

Step-by-step explanation:

Firstly, let us write the compound interest formula

P = I( 1 + r)^n

Since we are considering a capital rise of 3 times

If I, the initial value is x, the P

value later will be 3x

Interest rate is 5/100 = 0.05

so we need the value of t

This will be;

3x = x(1 + 0.05)^t

3= 1.05^t

ln 3 = t ln 1.05

t = ln 3/ln 1.05

t = 23 years

6 0
3 years ago
Consider the function graphed below. What is the average rate of change of the function over the interval [1, 3]?
EleoNora [17]
The correct answer is B. 36.
8 0
3 years ago
Which of the following values is greater than −3.5? −3.25 −3.75 −4.2 −5.4
fomenos
The answer is -3.25 is greater :)
6 0
1 year ago
If you take a number, times by 7 then subtract 1. You get the same as if you took the number multiply the number by 5 then subtr
Irina-Kira [14]

Answer:

-7/2 or -3.5

Step-by-step explanation:

Make the equation first

7x-1 = 5x-8

7 = -2x

-7/2 = x

4 0
3 years ago
Read 2 more answers
The first four terms of a sequence are shown below:
Marta_Voda [28]

Answer:

Step-by-step explanation:

Since each term is decreased by three f(n+1)=f(n)-3

7 0
3 years ago
Other questions:
  • if no digit may be used more than once how many two digit numbers can be formed using only the digits 5 6 3 and 2
    13·1 answer
  • 7 thousands divided by what number is equal to 7 hundreds?
    14·1 answer
  • A painter uses a roller to paint a wall. The roller has a radius of 5 inches and a height of 13 inches. In one roll, what is the
    13·1 answer
  • What is 7/4 as a mixed number?
    7·2 answers
  • the 80 students in the fifth grade at Northside Elementary School voted for their favorite animal after a trip to the zoo the el
    7·2 answers
  • Over summer, a dam’s water volume reduces from 20 megalitres to 4 megalitres. What fraction of the water in the dam has been los
    8·1 answer
  • Y
    10·1 answer
  • Scientists know that the diameter of a normal cell is 0.000025 cm. How is that number written in scientific notation?​ please he
    15·1 answer
  • Hello hehe more help please...
    14·2 answers
  • 7th grade math help me pleasee :))
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!