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3 years ago

Evaluate the expression when m=9 and n=7. 5m +n

Mathematics

2 answers:

lozanna [386]3 years ago

7 0

Answer:

Step-by-step explanation:

5m +n

Let m =9 and n=7

5*9 +7

Multiply first

45+7

Add

NemiM [27]3 years ago

4 0

Answer:

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Step-by-step explanation:

Step 1: Define

Identify

m = 9

n = 7

5m + n

Step 2: Evaluate

Substitute in variables: 5(9) + 7
Multiply: 45 + 7
Add: 52

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Suppose f(x)=6x-2 and g(x)=2x+4). Find each of the following functions.

makvit [3.9K]

a. (f+g)(x) = 8x+2

b. (f-g)(x) = 4x-6

Step-by-step explanation:

Given

$f(x) = 6x-2\\and\\g(x)=2x+4$

a. (f+g)(x)

$(f+g)(x)=f(x)+g(x)\\=6x-2+(2x+4)\\=6x-2+2x+4\\=6x+2x-2+4\\=8x+2$

b. (f-g)(x)

$(f-g)(x)=f(x)-g(x)\\=(6x-2)-(2x+4)\\=6x-2-2x-4\\=6x-2x-2-4\\=4x-6$

Hence,

a. (f+g)(x) = 8x+2

b. (f-g)(x) = 4x-6

Keywords: Functions

Learn more about functions at:

#LearnwithBrainly

8 0

4 years ago

Mia agrees to borrow a 3-year loan with 4% simple interest to buy a motorcycle.

TiliK225 [7]

Answer:

part a: she borrowed 3,700

part b: she would pay 555 interest

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

(14+42-6)/10+7^2 order of operation

Rainbow [258]

Answer:

Step-by-step explanation:

$\dfrac{(14+42-6)}{10}+7^2$

Parentheses (14 + 42 - 6) = 50:

⇒ 50/10 + 7²

Exponents 7² = 49:

⇒ 50/10 + 49

Multiplication/division 50/10 = 5:

⇒ 5 + 49

Addition/subtraction: 5 + 49 = 54

⇒ 54

6 0

3 years ago

Combine like terms.

Stolb23 [73]

The correct answer should be A because you have to have a common denominator in order to solve so you take 5/6x and 4/6x and solve.

6 0

3 years ago

The graph of f(x)=ax^2 is narrower than the graph of g(x)=dx^2 when a<d

Lynna [10]

Answer:

Step-by-step explanation:

as given in question that a > 0 so

if we put a=1

we get g(x) = f(x)

now put a =2

we get

g(x) = 2 f(x)

here we can see that g(x) would always be greater than or equals to f(x)

so we can say that the graph of g(x) will never be narrower than graph of g(x)

4 0

3 years ago