All categories

4 years ago

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

Mathematics

2 answers:

mars1129 [50]4 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]4 years ago

4 0

Answer:

3(15)+9=54

Step-by-step explanation:

A is equal to 15

You might be interested in

Integrate the following:<br><img src="https://tex.z-dn.net/?f=%20%5Cdisplaystyle%20%5Cint%20%5C%3A%20%20%5Ctan%28x%29%20%20%20%5

Korvikt [17]

Answer:

$\huge \boxed{\red{ \boxed{ - \cos(x) + C}}}$

Step-by-step explanation:

<h3>to understand this</h3><h3>you need to know about:</h3>

integration
PEMDAS

<h3>tips and formulas:</h3>

$\tan( \theta) = \dfrac{ \sin( \theta) }{ \cos( \theta) }$
$\sf \displaystyle \int \sin(x) \: dx = - \cos(x) + C$

<h3>let's solve:</h3>

$\sf \: rewrite \: \tan( \theta) \: as \: \dfrac{ \sin( \theta) }{ \cos( \theta) } : \\ = \displaystyle \int \: \frac{ \sin(x) }{ \cos(x) } \cos(x) \: dx \\ = \displaystyle \int \: \frac{ \sin(x) }{ \cancel{\cos(x) }} \: \cancel{ \cos(x)} \: dx \\ = \displaystyle \int \: \sin(x) \: dx$
$\sf \: use \: the \: formula : \\ \sf \displaystyle - \cos(x)$
$\sf add \: constant : \\ - \cos(x) + C$

$\text{And we are done!}$

6 0

3 years ago

Read 2 more answers

Based on the family the graph below belongs to, which equation could represent the graph?

pav-90 [236]

The correct equation which represents the graph is y = log (2x) + 3. Then the correct option is B.

<h3>What is a function?</h3>

The function is an expression, rule, or law that defines the relationship between one variable to another variable. Functions are ubiquitous in mathematics and are essential for formulating physical relationships.

The equations are given below.

The graph of the function y = 2ˣ + 3 approaches zero when the value of x goes to negative infinity.

The graph of the function y = log (2x) + 3 approaches the negative infinity when the value of x approaches zero.

The graph of the function y = 2x² + 2 is parabolic in nature.

Then the correct equation which represents the graph is y = log (2x) + 3.

More about the function link is given below.

brainly.com/question/5245372

#SPJ1

5 0

2 years ago

PLEASE ANSWER FAST I WILL GIVE BRAINLIEST

ANTONII [103]

Answer: 10 units²

Step-by-step explanation:

We can divide the shape along the y-axis to get 2 separate triangles. If we find the area of each and add them up, we can get the total area of the figure.

We can get each triangle's area using the formula $A = \frac{1}{2}bh$

<h3>Left Triangle</h3>

base length - 4 units

height - 4 units

$A = \frac{1}{2}(4)(4)$

$A=\frac{1}{2}(16)$

$A =8\hspace{0.1cm}units^2$

<h3>Right Triangle</h3>

base length - 2 units

height - 2 units

$A = \frac{1}{2}(2)(2)$

$A=\frac{1}{2}(4)$

$A=2\hspace{0.1cm}units^2$

Total = 8 units² + 2 units² = 10 units²

6 0

2 years ago

20 POINTS An electrician charges a set fee for every house call and then charges an hourly rate depending on how long the job ta

tatuchka [14]

Answer:

$the \: slope \: is \to \boxed{60}$

Step-by-step explanation:

$if \to C=65+60t \\ C=60t + 65 \\ but \: the \: \boxed{ c - intercept} \: is \: in \: the \: form \to \\ c = mt + b \\ hence \to \\ 60t = mt \\ m = \frac{60t}{t} \\ m = 60 \\ the \: slope \: is \to \boxed{60}$

5 0

3 years ago

Read 2 more answers

3. Below is Linbell's weekly work

Flura [38]

42
It’s 42 since if you would convert this

7 0

3 years ago

Read 2 more answers