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
Westkost [7]
3 years ago
7

3a+4=a+18 pls help!!!!!!!!!!!!1

Mathematics
2 answers:
solong [7]3 years ago
6 0

Answer:

a = 7

Step-by-step explanation:

3a + 4 = a + 18

Add -a and -4 on both sides.

3a - a = 18 - 4

2a = 14

Divide 2 into both sides.

a = 14/2

a = 7

eduard3 years ago
4 0

Answer:

a=7

Step-by-step explanation:

3a+4=a+18

-1a      -1a

2a+4=18

-4       -4

2a = 14

÷2   ÷2

a=7

You might be interested in
Which numbers are​ rational?
QveST [7]

Answer:

0 is a rational number.

-7 is a rational number.

10 is a rational number.

Step-by-step explanation:

Not sure about the rest but these numbers I know for a fact are 100% rational.

3 0
3 years ago
Is -9.1234567 rational
Wittaler [7]

The short answer: yes.

Explanation: every rational number can be expressed as, well, a ratio. For instance, 5 can be expressed as 5/1 and 1.75 can be expressed as 7/4. Irrational numbers are not rational. For instance, pi... there is no ration for pi.

8 0
3 years ago
Read 2 more answers
A sailboat started his journey at 6:30 am and reached his destination at 11:45 pm.If the distance of the journey was 1276.5, wha
attashe74 [19]

Answer:

74 mph

Step-by-step explanation:

step 1

Find the total time

A sailboat started his journey at 6:30 am and reached his destination at 11:45 pm

so

from 6:30 am to 12:00 pm ----> there are 5 hours + 30 minutes=5.5 hours

from 12:00 pm to 11:45 pm ----> there are 11 hours + 45 minutes=11.75 hours

The total time is

5.5+11.75=17.25 hours

step 2

Find the average speed

we know that

The average speed is equal to divide the total distance by the total time

speed=\frac{1,276.5}{17.25}= 74\ mph

4 0
3 years ago
The diameter of Circle Q terminates on the circumference of the circle at (3,0) and (3,-7) . Write the equation of the circle in
Deffense [45]

Step-by-step explanation:

The center of a circle with 2 end points of a di diameter is the midpoint of the two endpoints.

The formula needed to find the minpoints is

(x,y) = (x2 + x1)/2, (y2 + y1)/2

x2 = 3

x1 = 3

y2 = 0

y1 = -7

midpoint = (3 + 3)/2, (0 - 7)/2

midp[oint = 3,-3.5

The midpoint is the center of the circle. Observe that the signs get changed when entering the values for (x,y)

So far what you have is (x - 3)^2 + (y + 3.5)^2 = r^2

To determine r^2 you need only take the distance from the center to oneof the endpoints.

r^2 = (3 - 3)^2 + (3.5 - 0)^2

r^2 = 3.5^2

r^2 = 12.25

Answer: (x - 3)^2 + (y + 3.5)^2 = 12.25

6 0
3 years ago
#7 please help!!!!!!!!!!!!!!!!!!!!!!!!!
Ira Lisetskai [31]
If they all painted at the same rate the equation is this 

mothers 8
daughters 12  at 220 sq ft


mothers 6
daughters 8 at 152 sq ft

220 +152 =372 divided by 34 (because they all painted at the same rate)=10.94 sq ft they each painted
4 0
3 years ago
Other questions:
  • Ryker is given the graph of the function
    13·1 answer
  • At a music store, the price of a set of speakers is $245, plus the sales tax of 6.5%. What is the total cost of the speakers, in
    8·2 answers
  • WILL MARK YOU BRAINLIEST HURRY!
    11·2 answers
  • Dylan bought 3 identical shirts online for a total cost of $71.83 including a flat rate of $7.99 for shipping. Drag numbers to c
    12·1 answer
  • Given: Prove: Proof: Question 14 of 24 What is the missing reason in the proof? segment addition Congruent Segments Theorem Tran
    15·1 answer
  • The sum of a number and twenty is greater than four times the number decreased by one
    7·1 answer
  • The cost price of a box and a pen is Rs 120. The box is sold at 10% profita the pen is sold at 10% loss. If the selling price of
    10·1 answer
  • Given the perimeter is 180cm what is the length and breadth of the rectangle?
    9·1 answer
  • Please help! circled numbers only. tysm, ILL MARK BRAINLIEST!
    9·2 answers
  • How to find the sale price if 20% profits earned by selling the article of cost price
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!