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
Mashcka [7]
3 years ago
14

Simplify (3a-2b)²-2(3a-2b)(a+2b)+(a+2)²​

Mathematics
2 answers:
mylen [45]3 years ago
7 0
2. 2
4a - 20ab + 12b. +4a + 4
Mnenie [13.5K]3 years ago
6 0

Answer: 4a2-20ab+12b2+4a+4

the 2 is squareing 4a and 12b

Step-by-step explanation:

expand move the parentheses

multiply the parentheses

collect like terms

You might be interested in
please help me answer this question Solve: y − x = 12 y + x = -26 (19, -7). (-7, 1). (7, 19). (-19, -7).
Tpy6a [65]

Answer:

(-19 , -7)

Step-by-step explanation:

y - x = 12

y + x = -25 we sum them to get

2y = -14 , y = -7

then we put -7 instead of y in any of the equations:

-7 - x = 12

-x = 19

x = -19,

finally (x , y) is (-19 , -7)

3 0
3 years ago
-2|x-4|+7=-3 how do i solve this absolute value problem
ira [324]
Let's do this step by step:
Subtract both sides by 7
-2|x-4|= -10
Divide each side by -2
|x-4|= 5
Now since this is an absolute value equation, you will have two answers. This means you make the equation both positive and negative.
X-4= 5and -(x-4)= 5
Solve for x for both
X-4= 5: add four on both sides
X= 9
-x+ 4= 5: subtract 4 and divide by -1
X= -1
So your answer is: X= -1 , 9
4 0
3 years ago
The half-life of Radium-226 is 1590 years. If a sample contains 200 mg, how many mg will remain after 1000 years?
adell [148]

Answer: 129.33 g

Step-by-step explanation:

$$Let $p=A \cdot e^{n t}$ \\$(p=$ present amount, $A=$ initial amount, $n=$ decay rate, $t=$ time)

\begin{aligned}&\Rightarrow \text { Given } p=\frac{A}{2} \ a t  \ t=1590 \\&\Rightarrow \frac{1}{2}=e^{1590n} \Rightarrow n=\frac{\ln (1 / 2)}{1590}=-0.00043594162\end{aligned}

$$If $A=200 \mathrm{mg}$ and $t=1000$ then,$$\begin{aligned}P &=200 e^{\left(\frac{\ln \left(1/2\right)}{1590}\right) \cdot 1000} \text \\\\&=129.33 \text { grams}\end{aligned}$$

3 0
2 years ago
How much does 56 Fit into 7284
Vera_Pavlovna [14]
130

7284/56 = 130 (Rounded)
3 0
2 years ago
. Select all of the situations below that model this fraction. *
Ne4ueva [31]

Answer:

i think the answer is B, C and D

3 0
2 years ago
Read 2 more answers
Other questions:
  • When constructing parallel lines, how can you be sure the lines you constructed are parallel?
    8·2 answers
  • HELP ASAP I WILL GIVE BRAINLEST!!!
    8·2 answers
  • Y=0.5x find the slope and the y-intercept
    5·1 answer
  • PLEASE AWNSER THIS!!!​
    8·1 answer
  • What is the unit rate of 5 packs of gum for 1$?
    9·1 answer
  • Below are the ratings for a sample of 12 hotels in small Ontario towns:
    15·1 answer
  • In this given figure find the value of x​
    10·2 answers
  • If a watch costs $ 40 and you must pay 6.5 % sales tax
    12·1 answer
  • Kelly is knitting a scarf for her brother. It took her 1/3 hour to knit 3/8 foot of a scarf. How fast is Kelly’s knitting speed,
    15·1 answer
  • What is 7x-1+6x-1=180? SHOW WORK!!!!!!
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!