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
Andrew [12]
3 years ago
11

11. Use the fact that 19 X 33 = 627 to solve the problems and justify your reasoning

Mathematics
1 answer:
topjm [15]3 years ago
8 0
<h2>19 X 33 = 627,  justified.</h2>

Step-by-step explanation:

We have,

19 × 33 = 627

Use the fact and justify.

L.H.S. = 19 × 33

= (20 - 1) (20 + 13)

Using the identity,

(x - a)(x + b) = x^{2} - (a - b)x - ab

Here, x = 20, a = 1 and b = 13

= 20^{2} - (1 - 13)20 - 1(13)

= 400 - (- 12)20 - 13

= 400 + 240 - 13

= 640 - 13

= 627

= R.H.S., justified.

Thus,  19 X 33 = 627,  justified.

You might be interested in
A pharmacist has 80 milliliters of a 25% saline solution. Which expression can be used to find the percentage concentration of t
Ugo [173]
0.25 and y=80.01%. And the rest are wrong.
5 0
3 years ago
Two students in your class, Wilson and Alexis, are disputing a function. Wilson says that for the function, between x = –1 and x
Vesna [10]
They are using two different functions. Tell your math teacher that questions like these are loaded and should not be given as assignments.
6 0
3 years ago
If a train travels at 80 mph for 12 min, what is the distance traveled?
AnnyKZ [126]

Answer:

<h2>ANSWER→ </h2>
  • 16 miles
  • 12 minutes is 1 /5 of a hour
  • 80 ÷ 5 is 16
  • or 80x 1.466 =117.28 ft per second
  • 12 minutes x 60 seconds is 720
  • 117.28× 720= 84,441.6
  • 84441.6÷ 5280= 15.992 miles.
7 0
2 years ago
Read 2 more answers
What divides a two dimensional shape into two congruent shapes​
zaharov [31]

Answer:

Rectangle is a 2dimensional shape so, let me explain using it

The diagonal of a rectangle divides the rectangle into two triangles that are congruent and they are the same size and shape.

Another example is parallelogram

The diagonal of a parallelogram also divides the figure into two triangles that are congruent.

Step-by-step explanation:

6 0
3 years ago
Find the value of a if d=80, v^0=50 and t=8
Rina8888 [55]

Answer:

Step-by-step explanation:

you have to multiply

5 0
2 years ago
Other questions:
  • Find the length of the chord of a circle of radius 100 feet subtended by an angle of 75◦ ?
    9·1 answer
  • A delivery truck traveled 133 miles in 3.5 hours. What was the average speed of the delivery truck in miles per hour
    5·2 answers
  • A right rectangular prism has a length of 1.75 inches, a width of 2 inches, and a height of 1.5 inches.
    8·2 answers
  • Which expression is equivalent to -6(6 + 8) + 4
    10·2 answers
  • Sharon bought a mixture of nuts that was made up of pecans, walnuts and cashews in a ratio by weight of $2:3:1$, respectively. I
    13·1 answer
  • Please help me with this
    14·1 answer
  • If a function f is continuous for all x and if f has a relative maximum at (-1, 4) and a relative minimum at (3, -2), which of t
    11·2 answers
  • The soccer team has to order new uniforms. Their shorts cost $10, the jersey costs $15, and their socks cost $18. If there are 2
    10·2 answers
  • Help please! ill mark you brainliest!
    13·1 answer
  • GIVING BRAINLY 100 PTS
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!