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
Alex73 [517]
4 years ago
11

What is the value of a in the equation 3a + b = 54, when b = 9?

Mathematics
2 answers:
7nadin3 [17]4 years ago
8 0

Answer:

15

Step-by-step explanation:

When b = 9,

=> 3a + 9 = 54

=> 3a + 9 - 9 = 54 - 9

=> 3a = 45

=> 3a/3 = 45/3

=> a = 15

Therefore, when b is 9, a is 15

victus00 [196]4 years ago
5 0

Answer:

a=15

Step-by-step explanation:

First, you will plug in 9.

Then, you'll solve for a: 3a+9=54

Then, you'll subtract 9 from both sides. It will look like this: 3a+9-9=54-9

Then: 3a=45

Then you'll divide: 3a/3=45/3

And it gives you: a=15

You might be interested in
How much is 5a(6b+12)
andreev551 [17]
When writing an expression in expanded form, we just need to multiply what's outside the parentheses by everything that is inside the parentheses.

5a (6b + 12)

(5a * 6b) + (5a * 12)

30ab + 60a

And that is our answer.
5a (6b + 12) in expanded form is 30ab + 60a.
Hope that helped =)
6 0
3 years ago
Read 2 more answers
How could a(8x+7) and 4x+3.5 be equivalent? <br> What is the value of a?
Leya [2.2K]

Answer:

a = 1/2

Step-by-step explanation:

5 0
4 years ago
10090 7 Each railroad car in a train set is 6 inches in length. The railroad track is 5 feet long. How many railroad cars can it
Orlov [11]

Step-by-step explanation:
Given,
Length of railroad car = 6 inches
The length of railroad track = 5 feet
We will convert this length into inches.
1 feet = 12 inches
5 feet = 12*5 = 60 inches
Let,
x be the number of cars.
Number of cars * Length of each car = Length of track

Dividing both sides by 6

10 cars can fit on railroad track.
8 0
3 years ago
Read 2 more answers
PLEASE HELP MEEEEEEEEEEEEEEEEE​
brilliants [131]

Answer:

A. .25

B. .95

C. .75

D. .42

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Which congruent theorem can be used to prove..
hjlf

Answer:

Two angles and the non-included side of one triangle are congruent to the corresponding parts of another triangle. Which congruence theorem can be used to prove that the triangles are congruent? Two sides and the included angle of one triangle are congruent to the corresponding parts of another triangle.

5 0
3 years ago
Other questions:
  • A bottle of the medicine contains 0.5 kilograms of the medicine. One dose of the medicine is 20 grams for a child and 45 grams f
    6·1 answer
  • How is adding 2.67+8.91 similar to adding 8.91 +2.67
    5·1 answer
  • James’ college charges tuition based only on the number of credits a student takes. James paid $1218 to take 12 credits in the f
    14·2 answers
  • Work out:<br> 2/7 + 3/7 =?<br> 5/8 + 7/8 =?<br> 2/3 - 1/2 =?
    8·2 answers
  • 150 is divisible by which of the following numbers:2,3,4,5,6,9 or 10
    9·2 answers
  • Graph the line -4x+y=-8
    7·2 answers
  • The angle measurements in the diagram are represented by the following expressions.
    12·1 answer
  • How many people can fit in one car?
    13·1 answer
  • A dinner plate has a circumference of 100.48 cm. What is the area of the dinner plate? Use 7 = 3.14.
    10·1 answer
  • can anyone help me with this slope-length activity? whoever answers will get 5 stars and brainliest, i know its a bit of work so
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!