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
olga_2 [115]
3 years ago
5

(2x-7)(x+2)+(3x+7)(x+2)

Mathematics
2 answers:
Allushta [10]3 years ago
8 0

Answer:

2x^{2} +4x-7x-14+3x^{2} +6x+7x+14\\5x^{2} +10x

Step-by-step explanation:

Ivahew [28]3 years ago
4 0

Answer:

5

2

+

1

0

________________

You might be interested in
Determine the unknown angle measures in the figure
dusya [7]

Answer:

angle 3- 131

angle 2- 112

angle 5- 37

angle 1- 80

angle 4- 80

hope this helps :)- please crown me brainliest!!!

6 0
3 years ago
Read 2 more answers
at 5pm two hip started sailing toward each other from ports which were 300 miles apart at average rates of 20 and 25 mes per hou
maw [93]
If the average rates were 20 and 25 miles per hour, then together they cover 45 miles of the distance they are separated by per hour.  The ships will be 30 miles apart when 270 miles have been covered, so it takes 270/45=6 hours to cover the distance.  6 hours after 5 PM is 11:00 PM.
7 0
3 years ago
Write An algebraic expression with the constant 7 and thee variable y
Snowcat [4.5K]
Y+7
Y is the variable and 7 is the constant.
7 0
3 years ago
Read 2 more answers
camelback mountain has an elevation change of 1,264 feet. how many pennies would it take to make a stack that high ? make sure y
vredina [299]

Answer:

106,782,720

Step-by-step explanation:

84,480 pennies

There are 84,480 pennies in a mile. Yes, that is correct – 84,480 pennies! An interesting fact to know: 16 pennies laid side by side constitute 12 inches in length, or one foot, and since 5,280 feet equals one mile, that gives us 84,480 pennies in a mile.

84,480x1264=106,782,720

hope this helps!

Brainliest pls

Pls fully rate

Have a great day!

8 0
2 years ago
Match the systems of linear equations with their solutions.
OleMash [197]

Answer:

The solutions of linear equations in the procedure

Step-by-step explanation:

Part 1) we have

x+y=-1 ----> equation A

-6x+2y=14 ----> equation B

Solve the system by elimination

Multiply the equation A by 6 both sides

6*(x+y)=-1*6

6x+6y=-6 -----> equation C

Adds equation C and equation B

6x+6y=-6

-6x+2y=14

-------------------

6y+2y=-6+14

8y=8

y=1

Find the value of x

substitute in the equation A

x+y=-1 ------> x+1=-1 ------> x=-2

The solution is the point (-2,1)

Part 2) we have

-4x+y=-9 -----> equation A

5x+2y=3 ------> equation B

Solve the system by elimination

Multiply the equation A by -2 both sides

-2*(-4x+y)=-9*(-2)

8x-2y=18 ------> equation C

Adds equation B and equation C

5x+2y=3

8x-2y=18

----------------

5x+8x=3+18

13x=21

x=21/13

Find the value of y

substitute in the equation A

-4x+y=-9 ------> -4(21/13)+y=-9 ----> y=-9+84/13 -----> y=-33/13

The solution is the point (21/13,-33/13)

Part 3) we have

-x+2y=4 ------> equation A

-3x+6y=11 -----> equation B

Multiply the equation A by 3 both sides

3*(-x+2y)=4*3 ------> -3x+6y=12

so

Line A and Line B are parallel lines with different y-intercept

therefore

The system has no solution

Part 4) we have

x-2y=-5 -----> equation A

5x+3y=27 ----> equation B

Solve the system by elimination

Multiply the equation A by -5 both sides

-5*(x-2y)=-5*(-5)

-5x+10y=25 -----> equation C

Adds equation B and equation C

5x+3y=27

-5x+10y=25

-------------------

3y+10y=27+25

13y=52

y=4

Find the value of x

Substitute in the equation A

x-2y=-5 -----> x-2(4)=-5 -----> x=-5+8 ------> x=3

The solution is the point (3,4)

Part 5) we have

6x+3y=-6 ------> equation A

2x+y=-2 ------> equation B

Multiply the equation B by 3 both sides

3*(2x+y)=-2*3

6x+3y=6

so

Line A and Line B is the same line

therefore

The system has infinite solutions

Part 6) we have

-7x+y=1 ------> equation A

14x-7y=28 -----> equation B

Solve the system by elimination

Multiply the equation A by 7 both sides

7*(-7x+y)=1*7

-49x+7y=7 -----> equation C

Adds equation B and equation C

14x-7y=28

-49x+7y=7

------------------

14x-49x=28+7

-35x=35

x=-1

Find the value of y

substitute in the equation A

-7x+y=1  -----> -7(-1)+y=1 ----> y=1-7 ----> y=-6

The solution is the point (-1,-6)

6 0
3 years ago
Other questions:
  • PLEASE HELP THIS IS URGENT I AM BEING TIMED!!
    15·2 answers
  • Can some on help me please
    12·2 answers
  • You are planning to make an open rectangular box from a 24​-in.-by-47​-in. piece of cardboard by cutting congruent squares from
    15·1 answer
  • How much will a saver earn in 10 years on a $100 deposit that earns 5% compound interest (compound annually)?
    9·1 answer
  • Fond the value of x.
    15·2 answers
  • What is the variable in this expression? 5x^2 + x+7
    14·1 answer
  • Veronica says that the expression
    15·1 answer
  • Help me l,ll give you brainest
    14·2 answers
  • Sam bought a pack of
    11·1 answer
  • A.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!