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
storchak [24]
3 years ago
10

WHAT IS THE VALUE OF A IN 3A + B = 54 BUT WE B=9

Mathematics
2 answers:
exis [7]3 years ago
7 0
3A + 9 = 54
Subtract 9 from both sides
3A = 45
Divide both sides by 3
A = 15
satela [25.4K]3 years ago
4 0

Answer: A=15

Step-by-step explanation:

  You have the following equation:

3A + B = 54

 In order to find the the value of the variable "A" when B=9, you need to substitute this value of "B" into the equation and then you must solve for  "A".

Applying this procedure, you get:

3A + B = 54\\\\ 3A + 9 = 54\\\\3A=54-9\\\\3A=45\\\\A=\frac{45}{3}\\\\A=15

You might be interested in
Mary bought these art supplies: 4 paint brushes @ $1.29 each, 6 dowel rods @ $1.49 each, a jar of paste @ $1.25, and 2 canvases
Sophie [7]

Answer:

Option (1) is correct

The amount she receives back from $40 is  $12.65

Step-by-step explanation:

Given: Mary bought the art supplies.

4 paint brushes @ $1.29 each, 6 dowel rods @ $1.49 each, a jar of paste @ $1.25, and 2 canvases @ $6.00 each.

We have to find the change she get from $40.

We first find the total cost of the art supplies.

Since, she brought 4 paint brushes @ $1.29 each,

Thus, cost of 4 paint brush is  1.29 × 4 = $5.16

Also, 6 dowel rods @ $1.49 each,

Thus, cost of 6 dowel rods is  1.49 × 6 = $8.94

Thus, cost of 1 jar of paste  is $1.25

and 2 canvases @ $6.00 each

Thus, cost of 2 canvases  is $12.00

Thus, total cost of art supplies = 5.16 + 8.94 + 1.25 + 12 =$27.35

Thus, amount she receives back from $40 is $40 - $12.35 = $12.65

4 0
3 years ago
Read 2 more answers
Can you convert 0.75 0.07
Tems11 [23]
0.75 = 3/4 = 75%
0.07 = 7/100 = 7%
4 0
3 years ago
The first table that Cory designs will seat 8 people. If the diameter is 5 feet, what is the area? The area in terms of pi is Pi
frutty [35]

Answer: 19.6

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
What do all rational numbers have in common?
NISA [10]
They can be expressed as fractions






they have positive values and can be expressed as terminating decimals.
5 0
4 years ago
Question 7 of 10
Mama L [17]

Answer:

B

Step-by-step explanation:

Given a quadratic equation in standard form

ax² + bx + c = 0 ( a ≠ 0 )

Then the discriminant is

Δ = b² - 4ac

• If b² - 4ac > 0 then 2 real irrational roots

• If b² - 4ac > 0 and a perfect square then 2 real rational roots

• If b² - 4ac = 0 then 1 real double root

• If b² - 4ac < 0 then 2 complex roots

Given

x² + 3x - 7 = 0 ← in standard form

with a = 1, b = 3, c = - 7 , then

b² - 4ac

= 3² - (4 × 1 × - 7) = 9 + 28 = 37

Since b² - 4ac > 0 then 2 real irrational roots

8 0
3 years ago
Other questions:
  • Roberto's toy car travels 600 inches at high speed and then another 456 inches at low speed. What is the total distance the car
    12·1 answer
  • When 3 dice are rolled what is the probability of getting a sum of 15?
    14·1 answer
  • What is the y-value of the solution to the system of equations? 3x + 5y = 1 7x + 4y = −13
    7·1 answer
  • Is 2/15 closer to 0, 1/2, or 1
    15·1 answer
  • This table gives a few (x, y) pairs of a line in the coordinate plane. What is the y-intercept of the line?
    7·1 answer
  • Word form for 0.003?
    5·2 answers
  • PLZ HELP
    14·1 answer
  • Using partial quotients, which would be the best choice for the first number to subtract in the division problem 5,166 divided b
    12·1 answer
  • Can you Find the solution of the system of equations?
    12·1 answer
  • Find the value of X <br> Round to the nearest tenth
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!