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3 years ago

Use the order of operations to evaluate the expression 4×(3/4 - 1/2) +3×6

Mathematics

1 answer:

jekas [21]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

4 × (3/4 - 1/2) + 3 × 6

Step 2: Evaluate

(Parenthesis) Subtract: 4 × 1/4 + 3 × 6
Multiply: 1 + 3 × 6
Multiply: 1 + 18
Add: 19

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denis23 [38]

Answer:

$B = 325$

Step-by-step explanation:

Given

Total = 900

Singing = 600

Dancing = 500

None = 125

Required

Determine the number of students that participate in both

Representing; Singing with S, Dancing with D, Both singing and dancing with B and None with N;

In Set Notation;

$Total = (S - B) + (D - B) + N + B$

Substitute 900 for Total, 600 for S, 500 for D and 125 for N

$900 = (600 - B) + (500 - B) + 125$

Open Brackets

$900 = 600 - B + 500 - B + 125 + B$

Collect Like Terms

$900 = 600 + 500 + 125 - B - B + B$

$900 = 1225- B - B + B$

$900 = 1225- B$

Collect Like Terms

$900 - 1225 = -B$

$-325 = -B$

Multiply both sides by -1

$-1 * -325 = -B * -1$

$325 = B$

Reorder

$B = 325$

Hence, the number of students that do not participate in both is 325

4 0

3 years ago

The point (7, 8) is the solution of which of the following systems of equations?

Alex73 [517]

Option 4

Verification:-

$\\ \sf\longmapsto x-7y=-49$

$\\ \sf\longmapsto 7-7(8)=-49$

$\\ \sf\longmapsto 7-56=-49$

$\\ \sf\longmapsto -49=-49$

And

$\\ \sf\longmapsto 10x+9y=142$

$\\ \sf\longmapsto 10(7)+9(8)=142$

$\\ \sf\longmapsto 70+72=142$

$\\ \sf\longmapsto 142+142$

Hence verified

8 0

3 years ago

Read 2 more answers

What is the missing number for n 31.53=62.4?

shusha [124]

76876658765698608768

7 0

3 years ago

Photo above! Pleas show me how to solve this!

slega [8]

I think the answer is 41.53 percent. If that isn't the right answer than i'm sorry.

4 0

3 years ago

Number of sides of shape: _5 Number of degrees inside:

Gwar [14]

Answer:

Step-by-step explanation:

The sum of the interior angles of a polygon with n side is

$180(n-2)$

So, for a polygon with 5 sides the expression is

$180\cdot 3 = 540$

5 0

3 years ago

Use the order of operations to evaluate the expression 4×(3/4 - 1/2) +3×6​

Use the order of operations to evaluate the expression 4×(3/4 - 1/2) +3×6