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
earnstyle [38]
3 years ago
6

What is the factorization of 49b2 − 81? (7b – 9)(7b – 9) (7b – 9)(7b + 9) (7b2 – 9)(7b2 – 9) (7b2 – 9)(7b2 + 9)

Mathematics
2 answers:
salantis [7]3 years ago
5 0
The factorisation of 49b^2 - 81 is (7b - 9)(7b + 9). This is because 49 and 81 are the squares of 7 and 9 respectively, so these must be multiplied together. b^2 is b x b. Finally, it must be -9 and +9 to make -81, because when the signs are the same the result is a positive number.
Hope this helps.
GOOD LUCK WITH MATH!!!
Naddika [18.5K]3 years ago
5 0
49b^2 − 81 = <span> (7b + 9)(7b – 9)

answer
</span><span>(7b – 9)(7b + 9)</span>
You might be interested in
Simplify.<br> 10y-5y<br> Tfgfffgghjjjjb
sweet [91]
Its 5y sorry if it’s wrong
4 0
2 years ago
When rolling two dice , there are blank different ways to roll at least one 4.
Ann [662]

Answer:

3

Step-by-step explanation:

These 3 ways are:

  1. The first die showing a 4 and the second die showing a different number
  2. The second die showing a 4 and the first die showing a different number
  3. Both dice showing 4s
7 0
3 years ago
Read 2 more answers
34
Vadim26 [7]

Answer:

They are similar by the definition of similarity in terms of a dilation

Step-by-step explanation:

The given vertices of triangle ΔABC are;

A(1, 5), B(3, 9), and C(5, 3)

The vertices of triangle ΔDEF are;

D(-3, 3), E(-2, 5), and F(-1, 2)

Therefore, we get;

The length of segment, \overline{AB} = √((9 - 5)² + (3 - 1)²) = 2·√5

The length of segment, \overline{BC} = √((9 - 3)² + (3 - 5)²) = 2·√10

The length of segment, \overline{AC} = √((5 - 3)² + (1 - 5)²) = 2·√5

The length of segment, \overline{DE} = √((5 - 3)² + (-2 - (-3))²) = √5

The length of segment, \overline{EF} = √((2 - 5)² + (-1 - (-2))²) = √10

The length of segment, \overline{DF} = √((2 - 3)² + (-1 - (-3))²) = √5

∴ \overline{AB}/\overline{DE} = 2·√5/(√5) = 2

\overline{BC}/\overline{EF} = 2·√10/(√10) = 2

\overline{AC}/\overline{DF} = 2·√5/(√5) = 2

The ratio of their corresponding sides are equal and therefore;

ΔABC and ΔDEF are similar by the definition of similarity in terms of dilation.

4 0
3 years ago
Can someone please help me with math
DaniilM [7]

Answer:

B

Step-by-step explanation:

they want us to find the equation in slope intercept form

which is y= mx + b

where m = slope and b = y intercept

the slope is change in y over change in x

as y goes up 1 x goes up 1 so the slope is 1 or m=1

the y intercept is at point (0,1)

so the y intercept is 1

now we add it all together and get that the equation Is

y=x+1

8 0
3 years ago
Write and solve a proportion to answer the question.<br><br> 36 is 0.9% of what number w?
USPshnik [31]
The question can be written out like this:
36 = 0.009x

Multiply both sides by 1,000:
9x = 36,000

Divide both sides by 9:
x = 4,000
7 0
3 years ago
Other questions:
  • Write a quadratic function f whose zeros are - 5 and 7.
    7·1 answer
  • How to find answer to7.86*4.6
    7·1 answer
  • Find the probability that the dart lands in the shaded circular region. The radius of the dartboard is 4 in, and the radius of t
    5·1 answer
  • You are designing an aquarium that is to have a tank holding 225,000 gallons of water. The tank will be 100 feet long and 20 fee
    15·1 answer
  • The width of a rectangle is 3 units less than the length. The area of the rectangle is 4 units. What is the length, in units, of
    14·2 answers
  • Aliyah has some candy to give to her four children. She first took ten pieces for herself and then eventually divided the rest a
    15·2 answers
  • If the volume of the pyramid is 72cm3, what is it’s height in cm? A.3. B.9. C.12. D.18
    5·1 answer
  • Jack said, " Five times my age in 2 years is 100." How old is Jack now?
    15·1 answer
  • A slice was made through the shape shown below. The slice is parallel to the base of the shape. What is the shape of the cross s
    12·1 answer
  • Some banks charge a fee on savings accounts that are left inactive for an extended period of time.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!