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2 years ago

I subtract 3 from a certain number, multiply the result by 5 and then add 9

Mathematics

2 answers:

viktelen [127]2 years ago

4 0

Answer:

Step-by-step explanation:

I subtract 3 from a certain number, multiply the result by 5 and then add 9

Remember PEMDAS

(x - 3) * 5 + 9 =

5x - 15 + 9 =

mr_godi [17]2 years ago

3 0

Answer:

The number is 5x-6

Step-by-step explanation:

Let the number be x.

Then,

Subtracting 3,

x - 3

Multiplying by 5,

(x-3)5
5(x-3)

Adding 9:

5(x-3)+9

Solving Further:

5x-15+9
5x-6

You might be interested in

The length of a rectangle is 1 more than 3 times the width . If the perimeter of the rectangle is 18 units , what’s it’s area?

nika2105 [10]

Answer:

14 square units

Step-by-step explanation:

You need to know the formulas for the perimeter of a rectangle and the area of a rectangle, which are

2L + 2W - P where L is the length, W is the width, and P is the perimeter

and

A = LW

So we need to find the length and width to find the area

Step 1: Write equations out of the given information

"The length of a rectangle is 1 more than 3 times the width" can be rewritten as

L = 3W + 1

"the perimeter of the rectangle is 18 units" can be rewritten as

2L + 2W = 18

Step 2: Plug the first formula into the second one and solve

2(3W + 1) + 2W = 18

Simplify...

6W + 2 + 2W = 18

Combine like terms and subtract 2 from both sides

8W = 16

Divide both sides by 8 to isolate the W

W = 2

Step 3:

Plug W = 2 into the formula for L and solve for L

L = 3(2) + 1

L = 6 + 1

L = 7

Step 4: Use the length and width to calculate the area

A = LW

A = (7)(2)

A = 14 units squared

6 0

4 years ago

What is equivalent to m4 • m7

telo118 [61]

Answer:3.3

Step-by-step explanation:

m4*m7

3 0

3 years ago

-6*(-3) as a real life problem

Mekhanik [1.2K]

Answer:

Step-by-step explanation:

-6 × (-3)

negative× negative= positive

so 18.

6 0

3 years ago

Calculator

mixas84 [53]

$\text{Given : Which ordered pair is the solution to the system of equations?} \\ \\ \begin{cases}-5x - 3y = 12 \\ y - x = 12 \end{cases}$

$\text{Solution : According to the question, here let's take these variables as two} \\ \text{equations then get their value and finally get the answer.} \\ \\ \sf {1}^{st} \: equation : \\ \leadsto \frak{-5x - 3y = 12} \\ \\ \leadsto \frak{-5x = 12 + 3y} \\ \\ \leadsto \frak{x= \frac{12 + 3y}{-5}} \qquad \sf ...eq(1) \\ \\ \sf 2^{nd} \: equation : \\ \leadsto \frak{y = x - 12} \qquad \sf ...eq(2) \\ \\ \underline{ \frak{finding \: x }} : \\ \\ \dashrightarrow \frak{x= \frac{12 + 3y}{-5}} \\ \\ \dashrightarrow \frak{x= \frac{12 + 3(x - 12)}{-5}} \\ \\ \dashrightarrow \frak{x= \frac{12 + 3x - 36}{-5}} \\ \\ \dashrightarrow \frak{-5x= 12 + 3x - 36} \\ \\ \dashrightarrow \frak{-5x - 3x= - 24} \\ \\ \dashrightarrow \frak{-8x = - 24} \\ \\ \star \quad \underline{ \boxed{ \green{ \frak{x = 3}}}} \\ \\ \underline{ \frak{ getting \: y}} : \\ \\ \dashrightarrow \frak{y = 3 - 12} \\ \\ \star \quad\underline{ \boxed{\blue{ \frak{y = - 9}}}} \\ \\$

$\green{ \mathbb{HENCEFORTH, \: THE \: PAIR \: IS \: \pink{\frak{ (3,-9)}}}}$

5 0

3 years ago

Plz help asap!!!!<br> What is the midpoint of the segment shown below?

kifflom [539]

Answer:

Step-by-step explanation:

3 0

3 years ago

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