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
astra-53 [7]
3 years ago
9

What is the value of a in the equation 3 a plus b equals 54 when b equals 9?

Mathematics
2 answers:
mars1129 [50]3 years ago
8 0

Answer:

a= 15

Step-by-step explanation:

Given

3a + b = 54 ← substitute b = 9

3a + 9 = 54 ( subtract 9 from both sides )

3a = 45 ( divide both sides by 3 )

a = 15

Tanzania [10]3 years ago
4 0

Answer:

3(15)+9=54

Step-by-step explanation:

A is equal to 15

You might be interested in
What is the magnitude of 5-3i
VikaD [51]
Hi the answer for your question is 34
5 0
3 years ago
Can the sides of a triangle have lengths 2, 10, and 11?<br> yes<br> no
madreJ [45]

Answer:

Yes

Step-by-step explanation:

Triangle inequality theorem states that a triangle can exist if

a + b > c; a + c > b; b + c > a

a = 2; b = 10; c = 11

2 + 10 = 12; 12 > 11.

2 + 11 = 13; 13 > 10.

10 + 11 = 21; 21 > 2.

4 0
2 years ago
The Cooking Club was making some pies to raise money for the school . The cafeteria made 2 pies and was cut into 6 pieces . How
Temka [501]
2? It says it in the question I think
5 0
3 years ago
Please help! It’s Saturday and I only have this question left on my digital worksheet!
Natalija [7]

Answer:

<h2>The answer is option C</h2>

Step-by-step explanation:

<h3>\frac{ {6}^{ - 3} }{ {6}^{5} }</h3>

Using the rules of indices

Since the bases are the same and are dividing we subtract the exponents

That's

<h3>\frac{ {a}^{x} }{ {a}^{y} }  =  {a}^{x - y}</h3>

So we have

<h3>\frac{ {6}^{ - 3} }{ {6}^{5} }  =  {6}^{ -  3 - 5}  =  {6}^{ - 8}</h3>

Using the rules of indices

<h3>{x}^{ - y}  =  \frac{1}{ {x}^{y} }</h3>

So we have the final answer as

<h2>\frac{1}{ {6}^{8} }</h2>

Hope this helps you

4 0
3 years ago
A knife is three times the cost of a spoon. 9 spoons and 12 knifes cost ?82.80 workout the cost of 1 knife.
tankabanditka [31]

Let S = spoon

Let K = knife


1 knife is thee times the cost of a spoon, so it would be 3S

Now you have 9S + 12K = 82.80

We can replace the K with 3S:

9S +12(3S) = 82.80

Simplify the left side:

9S + 36S = 82.80

Add:

45S = 82.80

Divide both sides by 45"

S = 82.80 / 45

S = 1.84

One spoon cost $1.84


We know one knife cost 3 times as much, so multiply the cost of a spoon by 3:

Knife = 1.84 x 3 = $5.52

7 0
3 years ago
Read 2 more answers
Other questions:
  • 100 a month for 48 months
    13·1 answer
  • Your cellphone plan gives you 500 minutes monthly. If you have used 310 minutes already and there is a week left this month, how
    12·2 answers
  • A pea seller had some peas. He sold 40% of his stock and still had 420 peas. Originally, he had how many peas?
    13·2 answers
  • Monica’s current office is a square. Her office in the company’s new building will be 3 feet wider and 5 feet longer
    5·1 answer
  • Jessica has an account with a credit union. Her account earns 2.2% simple interest yearly. Exactly a year and a half ago, she op
    10·1 answer
  • Which function is the inverse of f(x)=b^x
    6·2 answers
  • BRAINLIEST FOR THE CORRECT AWNSER!! PLEASE PUT THE LETTER AWNSER AND EXPLAIN DO NOT LIE THANK YOU What is the goal of a proof by
    8·2 answers
  • The solutions to a certain quadratic equation are x = -4 and x = 3. Write the equation in standard form below.
    13·1 answer
  • Ill brainlist anyone who anwsers this
    14·1 answer
  • Can you help me please?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!