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
Reika [66]
3 years ago
15

Simplify 2a+2−3a−5+a−4+7a.

Mathematics
2 answers:
yKpoI14uk [10]3 years ago
8 0

Answer:

7a-7

Step-by-step explanation:

2a+2-3a-5+a-4+7a

=2a-3a+a+7a+2-5-4

=7a-7

zhuklara [117]3 years ago
3 0

Answer:

7a-7

Step-by-step explanation:

2a+2−3a−5+a−4+7a.

Combine like terms

2a-3a+a+7a+2-5-4

7a-7

You might be interested in
Josh has a job to tile a room 16 ft x 18 ft with 1 ft. square tiles. How many tiles does he need?
Lena [83]

Answer:

288 tiles

Step-by-step explanation:

16×18= 288 so he needs 288 square tiles

7 0
3 years ago
si franco comió 8/3 de pizza y Fabián comió 5/6 de la misma pizza. ¿quien comió más ? si quedó 4/9 de pizza.​
devlian [24]

Answer:

Franco comió 8/3 de pizza.

Fabián comió 5/6 de pizza.

Queremos saber quien comió más.

Entonces básicamente queremos ver cuál número es más grande, 8/3 o 5/6,

Podemos reescribir el primero como:

8/3 = (2 + 3 + 3)/3 = 2/3 + 3/3 + 3/3 = 2/3 + 1 + 1

      = 2 + 2/3

En cambio, para el número 5/6, el numerador es menor que el denominador, entonces sabemos que:

5/6  < 1

Claramente podemos ver que 8/3 > 5/6

Entonces podemos concluir que Franco comió más.

8 0
3 years ago
17x-3y=4 2x-4y=1 the solution to the system of equations is
Burka [1]

ANSWER

x=\frac{13}{62}

and


y= \frac{-9}{62}e have



EXPLANATION




17x-3y=4---(1)


2x-4y=1



Let us make y the subject and call it equation (2)


2x=1+4y


x=\frac{1}{2}+2y--(2)



We put equation (2) in to equation (1)




17(\frac{1}{2}+2y)-3y=4


\frac{17}{2}+34y-3y=4



34y-3y=4- \frac{17}{2}


Simplify to get,



31y= \frac{8-17}{2}



31y= \frac{-9}{2}


Divide both sides by 31,



y= \frac{-9}{2} \div 31



y= \frac{-9}{2} \times \frac{1}{31}




y= \frac{-9}{62}


We put this value in to equation (2) to get,



x=\frac{1}{2}+2\times -\frac{9}{62}




x=\frac{1}{2} -\frac{18}{62}


We collect LCM to obtain,



x=\frac{31-18}{62}



x=\frac{13}{62}








7 0
3 years ago
A store is selling a shirt for 1/4 off the original price of 28. what is the sale price of the shirt
Sedaia [141]
1/4 off means 0.25 * 28
7
Sale price = 28-7
= 21
3 0
3 years ago
2. Two angles have a common vertex but no common side. How can you tell whether the angles are vertical angles?
Maksim231197 [3]

Explanation:

The angles are <em>vertical angles</em> if the opposites of the rays forming one of the angles are the rays forming the other angle.

More formally, if V is the common vertex, and ...

  • R is a point on one of the rays forming Angle 1
  • S is a point on the ray that is the opposite of ray VR
  • T is a point on the other ray forming Angle 1
  • U is a point on the ray that is the opposite of ray VT

Then angle RVT and angle SVU are vertical angles.

___

Another way to say this is that points R, V, S are collinear, as are points T, V, U, and the two angles of interest are RVT and SVU.

If the above conditions cannot be met, then the angles are not vertical angles.

7 0
3 years ago
Other questions:
  • your are traveling down an interstate averaging 50mph how much time has passed when you have traveled 120 miles
    15·1 answer
  • if a die is rolled and a coin is flipped what is the the probability that the coin will be heads and the die will land on a 1,5
    12·1 answer
  • PLEASE HELP ME!!!!!!!!!!!!!!
    5·2 answers
  • What is the slope?
    7·1 answer
  • What’s 12 divided by 8? (Not for a quiz or test, just curious.)
    6·2 answers
  • What is 1/3+7/8 equal to?
    14·2 answers
  • Show that n^2-1 is divisible by 8,if 'n' is an odd positive integer.
    14·1 answer
  • Express 14/6 as a mixed number in simplest form
    14·2 answers
  • Which of the following properties is shown in the equation below? 3 × ( 6 × 2 ) = ( 3 × 6 ) × 2
    8·1 answer
  • Solve 8 = 2x + 4.<br><br> Helppppppp
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!