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
azamat
3 years ago
13

3. Which value of a below solves the equation: 3a +1=-a+3? (1) -6 (2) 8 (3) -1 (4) s

Mathematics
1 answer:
Ganezh [65]3 years ago
6 0

Answer:

None,

a=1/2

Step-by-step explanation:

Lets group together 'a' terms in one side of equations and lone terms on the other.

To do this, simply sum 'a' to both sides of equation, and also, subtract -1 (lone term).

3a+a=3-1

this leads to

4a=2

Where we obtain a=1/2

You might be interested in
Help! It says that I need to determine If both equations represent lines which are parallel, perpendicular, or none...
12345 [234]
    4x + 2y = 8     (1)
    8x + 4y = -4y  (2)

A) Two lines are parallel if they have the same gradient
       - putting both equations into the gradient- intercept form ( y = mx + c                where m is the gradient)
            (1) 4x + 2y = 8
                          2y = 8 - 4x
                            y = -2x + 4
             
            (2) 8x + 4y = -4y
      <span>                    </span>8x = -4y - 4y
                            y = \frac{-8x}{-8}
                            y = -x
   <span>Thus the gradient of the two equations are different and as such          the two lines are not parallel
</span>
B)  When two lines are perpendicular, the product of their gradient is -1
                   m_{1} * m_{2} = p
                                             p = (-2) * (-1)
                                             p =  2
<span>          ∴ the two lines are not perpendicular either.</span>

Thus these lines are SKEWED LINES

4 0
3 years ago
You are traveling at 75 miles per hour on a straight stretch of highway in Nevada. It is noon now. When will you arrive at the n
Levart [38]
Right now it is noon..... you are traveling 75 miles per hour meaning you'll move 75 miles... every hour. so you're 120 miles away so now we need to figure out the time.... to do this we already know 1 hour is 75 miles so now you can subtract one hour 120-75= 45 so 75 per hour, what would 45 be?..... so we can set up a fraction to figure out how long it takes to travel one minute.... so 60/75(the 60 is for minutes in an hour). which is .8 of a second to travel one mile so.... now you can multiply to check your work. .8*75=60 mins.... so now multiply.8*45(miles left)=36 so you'd get there at 1:36 it would take an hour and 36 mins to get to your destination going 75mph
6 0
4 years ago
What else would need to be congruent to show that abc = xyz by asa
pochemuha
Since you're working with the ASA postulate, you're looking to show congruence of the angles at either end of a side. You're given side AC and angle A as congruent with their counterparts. Obviously, you also need to show congruence of angle C with its counterpart, angle Z.

selection B is appropriate
6 0
4 years ago
Timothy is the manager of a car wash. Last week, there were 40 customers. This week there were 75% more customers than last week
elena-s [515]

Answer:

70

Step-by-step explanation:

"75% more customers than last week" means (100% + 75%) of 40, or

1.75(40 customers) = 70 customers this week

7 0
3 years ago
What happens to the volume of a sphere when its diameter is doubled?
pochemuha
To determine the effect of changing the diameter of a sphere to its volume, we would need to know the formula for the volume of a sphere which is V = 4πr³/3 where r is half of the diameter. As you can see, there is a direct relationship.

r1 = d1/2
r2 = d2/2 = 2d1/2 = d1

V2/V1 = (4πd1³/3) / (4π(d1/2)³/3)
V2/V1 = 8

Therefore, the volume of the sphere would be 8 times the original volume.
5 0
3 years ago
Read 2 more answers
Other questions:
  • A number is chosen at random from 1 to 10 find the probability of selecting a multiple of 3
    11·2 answers
  • What is the length of segment AB?
    8·1 answer
  • A jar has five red marbles and 10 blue ones if you were to pick a random marble without replacing it and then select another wha
    11·1 answer
  • Answer question 12 and 13 for 10 points
    6·1 answer
  • Solve for r: A = 2 πrh​
    12·1 answer
  • Compare the perimeter and area of the original figure to the enlarged figure using proportions.
    14·2 answers
  • Please help <br> answer choices are:<br> a (-2,-8)<br> b (2,-8)<br> c (2,-4)<br> d. (-2,4)
    12·1 answer
  • Nicole wants to paint this figure on her wall in her bedroom. If paint cost $4.59 per square unit, how many square feet of paint
    15·1 answer
  • Someone help 10<br> Points !
    6·2 answers
  • Using the statement, write an equation in one variable.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!