All categories

3 years ago

Simplify 1/3 - 1/2 + 2/5

Mathematics

2 answers:

Digiron [165]3 years ago

6 0

Answer:

$\frac{1}{3} - \frac{1}{2} + \frac{2}{5}$

$= \frac{10 - 15 + 2×6}{30}$

$= \frac{10 - 15 + 12}{30}$

$\frac{-5 +12}{30}$

= 7 /30

fenix001 [56]3 years ago

3 0

Answer:

$\frac{1}{3} - \frac{1}{2} + \frac{2}{5}$

$= \frac{10 - 15 + 2 \times 6}{30}$

$= \frac{10 - 15 + 12}{30}$

$= \frac{ - 5 + 12}{30}$

$= \frac{7}{30}$

You might be interested in

If 0 lies in the quadrant IV. What can be the value of cos 0?

Andru [333]

Answer:

Positive one

Step-by-step explanation:

The angle 0 does not lie in any of the four quadrants, it lands directly in between quadrants I and IV. The value of cos 0 is always 1.

4 0

3 years ago

What is the solution to the equation below?<br> log7+log(x-4)= 1

Mila [183]

Answer: x=38/7

Step-by-step explanation:

8 0

2 years ago

The volume of a cylinder is 4πx3 cubic units and its height is x units. Which expression represents the radius of the cylinder,

igor_vitrenko [27]

Answer:

The answer is A.

4 0

2 years ago

Read 2 more answers

What must be true for lines a and b to be parallel lines? Check all that apply.

Dima020 [189]

Answer:

Option (1), (2) , (7) and (8) is correct.

Step-by-step explanation:

Given: a║b and d and c be transversal , We have to find the value of x and measure of angle 1 and 2.

Since, a║b and d be a transversal then ,

∠BXZ = ∠AZP = 58° ( corresponding angles )

Thus, m∠2 = 58°

∠BYC = ∠XYZ = (4X-10)° (vertically opposite angles)

Since, a║b and c be a transversal then,

∠XYZ = ∠QZU = (4X-10)° (Corresponding angles)

Thus, m∠1 = (4X-10)°

Also, Since, 'a' is a straight line.

Sum of angles on a straight line is 180°.

⇒ ∠PZA + ∠PZQ + ∠QZU = 180°

⇒ 58° +(3X-1)°+(4X-10)° = 180°

⇒ 58° + 7x - 11 = 180°

⇒ 47° + 7x = 180°

⇒ 7x = 180°- 47°

⇒ 7x = 133°

⇒ x = 19°

Put x = 19 in (3X-1)° and (4X-10)° , we get

(3X-1)° = (3(19)-1)° = 56°

(4X-10)° = (4(19)-10)°= 66

Thus, (3X-1)° ≠ (4X-10)°

Thus, option (1), (2) , (7) and (8) is correct.

5 0

3 years ago

Read 2 more answers

Write an equation of a line passing through the point (4,-9) and parallel to the line 3x-6y=30

sesenic [268]

The equation of a line in the slope intercept form is expressed as

y = mx + c

Where

m represents slope

c represents y intercept

The equation of the given line is expressed as

3x - 6y = 30

Rearranging it so that it will look like the slope intercept form, it becomes

6y = 3x - 30

Dividing both sides by 6, it becomes

6y/6 = 3x/6 - 30/6

y = x/2 - 5

Looking at the equation, slope, m = 1/2

If two lines are parallel, it means that they have equal slope. This means that the slope of the line parallel to the given line is 1/2

To determine the y intercept, c of the line passing through the point (4, - 9), we would substitute

x = 4, y = - 9 and m = 1/2 into the slope intercept equation. It becomes

- 9 = 1/2 * 4 + c

- 9 = 2 + c

c = - 9 - 2

c = - 11

By substtuting m = 1/2 and c = - 11 into the slope intercept equation, the equation of the line would be

y = x/2 - 11

7 0

9 months ago