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
myrzilka [38]
3 years ago
8

Choose the correct simplification of the expression (−2x + 10y)(4x − 6y). (1 point)

Mathematics
2 answers:
ELEN [110]3 years ago
5 0
(-2x+10Y)(4X-6Y) can be simplified as -8x+-60Y because you have to combine like terms such as -2x and 4x.
Sidana [21]3 years ago
4 0
Here is your simplification step by step. :)

<span><span>(<span><span>−<span>2x</span></span>+<span>10y</span></span>)</span><span>(<span><span>4x</span>−<span>6y</span></span>)</span></span><span>
=<span><span>(<span><span>−<span>2x</span></span>+<span>10y</span></span>)</span><span>(<span><span>4x</span>+<span>−<span>6y</span></span></span>)</span></span></span><span>
=<span><span><span><span><span>(<span>−<span>2x</span></span>)</span><span>(<span>4x</span>)</span></span>+<span><span>(<span>−<span>2x</span></span>)</span><span>(<span>−<span>6y</span></span>)</span></span></span>+<span><span>(<span>10y</span>)</span><span>(<span>4x</span>)</span></span></span>+<span><span>(<span>10y</span>)</span><span>(<span>−<span>6y</span></span>)</span></span></span></span><span>
=<span><span><span><span>−<span>8<span>x2</span></span></span>+<span><span>12x</span>y</span></span>+<span><span>40x</span>y</span></span>−<span>60<span>y2</span></span></span></span><span>
=<span><span><span>−<span>8<span>x2</span></span></span>+<span><span>52x</span>y</span></span>−<span>60<span>y<span>2

Hoped I helped!</span></span></span></span></span>
You might be interested in
If the average yield of cucumber acre is 800 kg, with a variance 1600 kg, and that the amount of the cucumber follows the normal
lorasvet [3.4K]

Answer:

a

   The  percentage is

            P(x_1 <  X <  x_2 ) =   51.1 \%

b

   The probability is  P(Z >  2.5 ) =  0.0062097

Step-by-step explanation:

From the question we are told that

        The  population mean is  \mu =  800

        The  variance is  var(x) =  1600 \ kg

        The  range consider is  x_1 =  778 \ kg  \  x_2 =  834 \ kg

         The  value consider in second question is  x =  900 \ kg

Generally the standard deviation is mathematically represented as

        \sigma =  \sqrt{var (x)}

substituting value

        \sigma =  \sqrt{1600}

       \sigma = 40

The percentage of a cucumber give the crop amount between 778 and 834 kg  is mathematically represented as

       P(x_1 <  X <  x_2 ) =  P( \frac{x_1 -  \mu }{\sigma} <  \frac{X - \mu }{ \sigma } < \frac{x_2 - \mu }{\sigma }   )

    Generally  \frac{X - \mu }{ \sigma } = Z (standardized \  value  \  of  \  X)

So

      P(x_1 <  X <  x_2 ) =  P( \frac{778 -  800 }{40} < Z< \frac{834 - 800 }{40 }   )

      P(x_1 <  X <  x_2 ) =  P(z_2 < 0.85) -  P(z_1 <  -0.55)

From the z-table  the value for  P(z_1 <  0.85) =  0.80234

                                            and P(z_1 <  -0.55) =   0.29116  

So

             P(x_1 <  X <  x_2 ) =   0.80234 - 0.29116

             P(x_1 <  X <  x_2 ) =   0.51118

The  percentage is

            P(x_1 <  X <  x_2 ) =   51.1 \%

The probability of cucumber give the crop exceed 900 kg is mathematically represented as

             P(X > x ) =  P(\frac{X - \mu }{\sigma }  > \frac{x - \mu }{\sigma } )

substituting values

             P(X > x ) =  P( \frac{X - \mu }{\sigma }  >\frac{900 - 800 }{40 }   )

             P(X > x ) =  P(Z >2.5   )

From the z-table  the value for  P(Z >  2.5 ) =  0.0062097

 

7 0
3 years ago
How is Solving for speed similar to solving for time? They both require that two numbers be added. They both require that two nu
sweet [91]

Answer:

They both involve writing a rate.

Step-by-step explanation:

EDGENUITY ANSWER

7 0
3 years ago
Read 2 more answers
Can anyone help me with this dont answer if you dont no what it is and no deleting answers
Mkey [24]
The answer to this question is the second choice, jessica bought 1/4 more than derek

6 0
2 years ago
Given: mAngleEDF = 120°; mAngleADB = (3x)°; mAngleBDC = (2x)° Prove: x = 24 3 lines are shown. A line with points E, D, C inters
N76 [4]

Answer:

" Vertical angles are congruent " ⇒ 2nd answer

Step-by-step explanation:

* <em>Look to the attached figure </em>

- There are three lines intersected at point D

- We need to find the missing in step 3

∵ Line FA intersects line EC at point D

- The angles formed when two lines cross each other are called

 vertical angles

- Vertical angles are congruent (vertical angles theorem)

∴ ∠ADC and ∠FDE are vertical angles

∵ Vertical angles are congruent

∴ ∠EDF ≅ ∠ADC

∴ m∠EDF ≅ m∠ADC

∵ m∠EDF = 120° ⇒ given

∵ m∠ADC = m∠ADB + m∠BDC

∴ m∠ADB + m∠BDC = 120°

∵ m∠ADB = (3x)° ⇒ given

∵ m∠BDC = (2x)° ⇒ given

∴ 3x + 2x = 120 ⇒ add like terms

∴ 5x = 120 ⇒ divide both sides by 5

∴ x = 24

Column (1)                                                     Column (2)

m∠EDF = 120°                                               given

m∠ADB = 3 x                                                 given

m∠BDC = 2 x                                                 given

∠EDF and ∠ADC are vertical angles           defin. of vert. ∠s

∠EDF is congruent to ∠ADC                        vertical angles are      

                                                                        congruent  

m∠ADC = m∠ADB + m∠BDC                        angle add. post.

m∠EDF = m∠ADC                                          defin. of cong.

m∠EDF = m∠ADB + m∠BDC                         substitution

120° = 3 x + 2 x                                               substitution

120 = 5 x                                                         addition

x = 24                                                              division  

∴ The missing reason is " vertical angles are congruent "

- From the explanation above ∠ADC and ∠FDE are vertical

 angles then they are congruent according to vertical angle

 theorem

6 0
3 years ago
Read 2 more answers
Solve the equation x-20.7=9.5 for x
kenny6666 [7]
The answer will come out to 30.2
8 0
2 years ago
Read 2 more answers
Other questions:
  • Okay so I'm struggling at this particular set of questions on Khan Academy. Anyone got any ideas?
    10·2 answers
  • GEOMETRY PLEASE HELP ME URGENT
    6·1 answer
  • Farmer Bob's son built a track to walk his pet pig. The
    5·1 answer
  • Please help!
    15·1 answer
  • Two machines are used for filling plastic bottles with a net volume of 16.0 ounces. The filling processes can be assumed to be n
    11·1 answer
  • The volume of one prism is known, along with the height
    14·2 answers
  • What is the measure of angle 1
    7·1 answer
  • 3. An expandable cone-shaped funnel consists of two sections as shown. (a) What is the volume of the bottom section? (b) What is
    7·1 answer
  • Ill give BRAINLIEST to the best answer<br><br>Can somebody make this trend line a linear equation?
    8·1 answer
  • Help me pls! 8 - 5 1/3=?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!