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
ddd [48]
3 years ago
12

-3а- 8+2а = 13 How do you solve this (like terms)

Mathematics
2 answers:
azamat3 years ago
3 0
Combine -3a+2a which = -a-8=13 then +8, which is -a=21
Dmitry_Shevchenko [17]3 years ago
3 0

Answer:

a = -21

Step-by-step explanation:

-3a +2a -8 = 13

- a-8 = 13

-a -8 -13 = 0 ( the sign changes from +13 to -13 )

-8 -13 = a ( the sign of a changes from -a to + a ) -21 = a

Follow me!

You might be interested in
Blue Star is starting a new distribution service that delivers auto parts to the service departments of auto dealerships in the
marusya05 [52]

Answer:

Blue Star

a.                                   The Ford TriVan   The Honda CityVan

Total life-cycle costs          $94,368                $90,936

Based on life cycle cost, the Honda CityVan is the best choice.

b. Blue Star needs to put on the Ford TriVan 9,032 miles more for the cost to be equal with the Honda CityVan's.

c. The crossover point in years = 5 months

Step-by-step explanation:

a) Data and Calculations:

                                        The Ford TriVan   The Honda CityVan

Purchase costs                  $28,000                 $32,000

Fuel efficiency per gallon   24 miles                 37 miles

Operating cost per mile     $0.20                     $0.22

Total operating costs         $4,400                   $4,840

Estimated annual distance 22,000 miles        22,000 miles

Gallons of fuel consumed  916.7 (22,000/24) 594.6 (22,000/37)

Total cost of fuel                 $3,896                  $2,527

Fuel cost per mile              $0.18                      $0.115

Total cost per mile             $0.38                     $0.335

Expected life of truck         8 years                   8 years

Average gas price = $4.25 per gallon

Total costs:

                                        The Ford TriVan   The Honda CityVan

Annual costs:

Total operating costs         $4,400                   $4,840

Total cost of fuel                $3,896                   $2,527

Annual costs                      $8,296                   $7,367

Life cycle costs:

Annual costs for 8 years   $66,368                $58,936

Purchase costs                  $28,000                $32,000

Total life-cycle costs          $94,368                $90,936

Difference in costs between Ford TriVan and Honda CityVan = $3,432 ($94,368 - $90,936)

Miles to put on the Ford TriVan for the life cycle cost to be equal to the life cycle cost of the Honda CityVan

= Difference in costs divided by total cost per mile of the Ford TriVan

= 9,032 miles ($3,432/$0.38)

Annual distance = 22,000 miles

Monthly distance = 1,833 miles

9,032/1,833 = 4.93 months or 5 months approximately

3 0
3 years ago
Which words in the sentence are the indirect objects?
Ann [662]
A. Gloria because Gloria isn't being showed something shes the one showing something to someone else.
8 0
3 years ago
Shania is buying a car. She has narrowed her choice down to three cars: a sedan, a hatchback, and a wagon. She uses a spinner di
marishachu [46]

Answer:

The answers C

Step-by-step explanation:

5 0
3 years ago
Evaluate each expression (-21)+22+41
Marianna [84]

Answer:

42

Step-by-step explanation:

Add all up

4 0
3 years ago
Please help me out <br>​
Shkiper50 [21]

Answer:

(i) F = 25 N

(ii) F = 35.36 N

(iii) F = 43.3 N

Step-by-step explanation:

We note that the component of force acting along the incline surface is given by the relation

Force, acting parallel to the incline plane, F_p = M×g×sin(θ)

Given that the weight of the body is given as 50 N, we have;

M×g = 50 N

Therefore we have;

(i) For the plane with angle of elevation = 30°

F_p = M×g×sin(θ) = 50 × sin(30°) = 25 N

The force  F_p  = F = 25 N

F = 25 N

(ii) For the plane with angle of elevation = 45°

F_p = M×g×sin(θ) = 50 × sin(45°) = 50 × (√2)/2 = 25·√2 N

F_p = F = 25×√2 N = 35.36 N

F = 35.36 N

(iii) For the plane with angle of elevation = 60°

F_p = M×g×sin(θ) = 50 × sin(60°) = 50 × (√3)/2 = 25·√3 N

F_p = F = 25×√3 N = 43.3 N

F = 43.3 N.

6 0
3 years ago
Other questions:
  • A circle centered at the origin contains the point
    6·1 answer
  • Whole number between 1 and 10, and then write its reciprocal.
    14·1 answer
  • 50 points Please help ASAP
    5·2 answers
  • Pls help i dont wanna ruin my sleep schedule
    10·1 answer
  • A visual-effects model maker for a movie draws a spaceship using a ratio of 1 : 24. The drawing of the spaceship is 22 inches lo
    12·1 answer
  • Aiden works at a lab with a huge circular particle accelerator. It has a diameter of 8 kilometers. What is the accelerator's rad
    5·2 answers
  • Justin plans to spend $35 on sports cards. Regular cards cost $4.50 per pack and foil cards cost $6.00 per pack Which inequality
    13·1 answer
  • How many total boxes would need to make a full x if we currently have 1/4x
    12·2 answers
  • Which of the following functions is graphed below?
    12·1 answer
  • The correlation between two scores X and Y equals 0.75. If both scores were converted to Z-scores, then the correlation between
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!