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
labwork [276]
3 years ago
6

Help me solve? 1. Multiply and simplify. 1. (b + 2)(b + 2) 2. (x + 3)(x – 3)

Mathematics
2 answers:
RideAnS [48]3 years ago
7 0
1. b^2+4b+4
2. x^2-9
=)

Rudiy273 years ago
5 0
1. (b × b) + (2 × b) + (2 × b) + (2 × 2)
= b² + 2b + 2b + 4
= b² + 4b + 4

2. (x × x) + (x(–3)) + (3 × x) + (3(–3))
= x² + (–3x) + 3x + (–9)
= x² — 3x + 3x — 9
= x² — 9
You might be interested in
Samantha buys a car for $19,000. Looking on Kelley Blue Book, she realized that
Yuri [45]

Answer:

$16,150

Step-by-step explanation:

hope this helps with the work

4 0
3 years ago
BRAINLIEST ASAP! PLEASE HELP ME :)
avanturin [10]

Answer:

1.) BC, AD, FI.

2.) Parallel.

Step-by-step explanation:

I can't get the other two I'm sorry mate like I really gotta go. Before my mum gets mad. Got chores. Good luck.

6 0
4 years ago
PLEASE NEED HELP PLZ
never [62]

Answer:

Step-by-step explanation:

Hi, saw your comments, TY :)

this is super tricky b/c they tell us at the top that the triangles are similar so we have to know that we can use that triangle relation to make an equation. It just seem like to me, that you'd not see this  "connection"  where

the smaller triangle is CDE and the bigger one is QPR , so the side can be the lower case of those letters..  the side opposite of the angle is the lower case letter like the angle, soo

p = 2x + 16

r = 33

e = 8

c = 6

then the triangles have that similar triangle relation, of

p = e

r = c

so the fractional relations ship between  e/p  = c /r  you could also make it work by doing  p/e = r/c   but.. you have to keep the bigger triangle and smaller one in the same place for each fraction.  So it's important to keep that clear, which is which

let's use the fractions this way

p/e = r/c  , it seems easiest to me, plug in the values,  

2x + 16 / 8 = 33 / 6  ( now some algebra,  where all mistakes happen :P)

2x + 16 = 8 ( 33 / 6 )   ( times 8 on both sides )

2x + 16 = 4 ( 33 / 3 )         ( I just reduced by 2 )

2x + 16 = 4 ( 11 )  

2x + 16 = 44

2x  = 44 - 16

2x = 28  

x = 14                  ( divide by 2 on both sides )

Yay,  you can check to see if it's right by plugging 14 in for x and seeing if the  p/e = r/c relationship works, I did, and it does :P  but try it just for practice :)  

4 0
3 years ago
An aeroplane covers a distance of 7200 km an hour how much distance will it cover in 12 hours​
Vilka [71]

Answer:

86,400 km.

Step-by-step explanation:

Let x be time (hours) and y be distance (km).

If an aeroplane covers a distance of 7200 km/h then we can write an equation as y = 7200x

This means if x = 1 i.e time is one hour and the distance is 7200 km.

Therefore, in 12 hours will be x = 12, substitute x = 12 in y = 7200x.

Thus, y = 7200(12) then calculate as we receive 86,400 km.

Hence, it will cover 86,400 km in 12 hours.

Second Method

Another method involves with speed formula, speed = distance/time.

Because we want to find distance, move time to multiply with speed.

Thus, our new formula for distance is <u>distance = speed*time.</u>

Our speed is 7,200 km/h and time would be 12 because we want to find distance within 12 hours.

Hence, distance = 7200*12 = 84,600 km.

If you have any questions regarding this math problem or my answer, you can always reach out to me in comment!

5 0
3 years ago
What is this table called?​
Dafna1 [17]

Answer:

Extending tables

Step-by-step explanation:

that's what Google says lol

8 0
3 years ago
Other questions:
  • Please help me find the angle
    11·2 answers
  • 1/4x^3 = -27/4 help me plz
    6·1 answer
  • The length of a movie falls on a normal distribution. About 95% of movies fall between 75 minutes and 163 minutes.
    10·1 answer
  • 3w-4z=8
    8·1 answer
  • A shipment of 40 fancy calculators contains 3 defective units. What is the probability if a college bookstore buys 20 calculator
    14·1 answer
  • What’s the answer to this???
    15·2 answers
  • 62x+2.63x = 1<br> Solve<br> EN
    5·1 answer
  • Students were asked to choose their favorite sport
    7·1 answer
  • What is the general term of this number pattern <br>20,50,70,..........​
    14·1 answer
  • What is 10/12 using simplest form
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!