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
Y_Kistochka [10]
3 years ago
12

What's the equivalent of the expression -2 (-x +5y ) + 3 (2x - 6y)?

Mathematics
jabraya
2 years ago
where's the answer
1 answer:
Anastasy [175]3 years ago
6 0

Answer:

Step-by-step explanation:

-2 (-x +5y ) + 3 (2x - 6y)

Opening bracket

= 2x - 10y + 6x - 18y

= 8x - 28y

= 4(2x - 7y)

You might be interested in
Mimi recorded a soccer game that lasted 1
lyudmila [28]

9514 1404 393

Answer:

  7 hours

Step-by-step explanation:

4 × (1 3/4) = 4×1 + 4×3/4 = 4 + 3 = 7

Mimi spent 7 hours watching the game.

7 0
3 years ago
Carlos wants to practice piano 2 hours each day. He practices piano for 3/4 hour before school and 7/10 hour when he gets home.
CaHeK987 [17]

Answer:

Carlos has practiced piano for \frac{29}{20}=1\frac{9}{20} hours.

Carlos needs to practice \frac{11}{20} hours.

Step-by-step explanation:

We have been given that Carlos wants to practice piano 2 hours each day. He practices piano for 3/4 hour before school and 7/10 hour when he gets home.

First of all, we will find piano practiced before school and after school by adding both amounts as:

\frac{3}{4}+\frac{7}{10}

Make a common denominator:

\frac{3*5}{4*5}+\frac{7*2}{10*2}

\frac{15}{20}+\frac{14}{20}

Add numerators:

\frac{15+14}{20}

\frac{29}{20}  

Therefore, Carlos has practiced piano for \frac{29}{20} hours.

Now, we will subtract \frac{29}{20} from 2 find number of hours Carlos needs to practice to reach his goal.

2-\frac{29}{20}

\frac{2*20}{20}-\frac{29}{20}

\frac{40}{20}-\frac{29}{20}

\frac{40-29}{20}

\frac{11}{20}

Therefore, Carlos needs to practice \frac{11}{20} hours before going to bed in order to meet his goal.

7 0
3 years ago
Find the distance between the two points rounding to the nearest tenth (if necessary).
Sergio [31]

Answer:

6.7 units

Step-by-step explanation:

The distance between two points can be found using the formula below:

\boxed{{\text{Distance between 2 points}= \sqrt{(y_1 - y_2)^{2} + (x_1 - x_2)^{2}  } }}

Thus, distance between (-1, 2) and (2, -4)

=  \sqrt{( - 4 - 2)^{2} +  { [2-(-1) ]}^{2}  }

=  \sqrt{ {( - 6)}^{2}  +   {(2 + 1)}^{2} }

=  \sqrt{36 + 9}

=  \sqrt{45}

= 6.7 units (nearest tenth)

Additional:

For a similar question on distance between points, do check out the following!

  • brainly.com/question/23274198

6 0
2 years ago
What is the surface area
Yanka [14]

Answer:

170ft

Step-by-step explanation:

A=2(wl+hl+hw) is the equation

4 0
3 years ago
Read 2 more answers
If EB =4y-12 and ED= y+17, find the value of y. Then find ED,DB,EB.
ASHA 777 [7]

Given values of EB and ED are

EB = 4y-12, ED= y+17

And from the diagram, we can say that D is the midpoint of EB.

THerefore

2ED = EB

Substituting the values of EB and ED, we will get

2(y+17) = 4y-12 \\ 2y + 34 = 4y -12 \\ 34+12 = 4y-2y \\ 2y=46 \\ y=23

Therefore,

ED = y+17 = 23+17 = 40 \\ DB= ED =40 \\ EB= 2 ED = 2*40 =80

7 0
3 years ago
Other questions:
  • If D is on the interior of ∠EBC, m∠EBD = (4x -1)°, m∠DBC = (x - 2)°, and m∠EBC = 62°, find the value of x.
    5·1 answer
  • I need help with solving this
    10·1 answer
  • If the overnight temperature at the Arctic Circle was -14 degrees, but the temperature rose to 9 degrees during the day, what wa
    13·1 answer
  • Intr-un triunghi dreptunghic abv ,m
    8·1 answer
  • Solve the equation<br> 3x + 5 = 2x - 3<br><br> x=8<br> X = 10<br> X= -8<br> X= -2
    5·2 answers
  • What is the wavelength of a 320 Hz sound traveling 330 m/s?
    8·1 answer
  • Please find the x for these ​
    13·1 answer
  • What shape are possible cross section cylinder?
    13·1 answer
  • 1001+100=?<br><br> pls help PLSSSSSSSSSSSSSSSSS HElp
    14·1 answer
  • G(x)=-x^2/4 +7<br> Over which interval does g have a negative average rate of change?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!