All categories

4 years ago

Four fifths minus eight fifteen

1 answer:

4 0

$\frac{4}{5} - \frac{8}{15} = \frac{4\times 3}{5\times 3} - \frac{8}{15} = \frac{12}{15} - \frac{8}{15} = \frac{12-8}{15} = \boxed{\frac{4}{15}}$

You might be interested in

V2y + 3 = 11

spin [16.1K]

Answer:

v2y +3=11

V2y=11- 3

V2y=8

2y=8²

2y=64

y=64÷2

y=32 Answer

7 0

3 years ago

Solve the equation

UNO [17]

Answer:

x = 10

Step-by-step explanation:

2x/3 + 1 = 7x/15 + 3

(times everything in the equation by 3 to get rid of the first fraction)

2x + 3 = 21x/15 + 9

(times everything in the equation by 15 to get rid of the second fraction)

30x+ 45 = 21x + 135

(subtract 21x from 30x; subtract 45 from 135)

9x = 90

(divide 90 by 9)

x = 10

<h2>Another solution:</h2>

2x/3 + 1 = 7x/15 + 3

(find the LCM of 3 and 15 = 15)

(multiply everything in the equation by 15, then simplify)

10x + 15 = 7x + 45

(subtract 7x from 10x; subtract 15 from 45)

3x = 30

(divide 30 by 3)

x = 10

4 0

3 years ago

The perimeter of an equilateral triangle is 4.8 cm. Which equation gives the length of one side?

iVinArrow [24]

Answer:

14.4

Step-by-step explanation:

7 0

3 years ago

A wedding ring is dropped from a tall building, the distance it has fallen in feet is given by 16t^2, where t is the time in sec

natka813 [3]

Answer:

Step-by-step explanation:

As given, the diatance at any point after t seconds is given by

s(t)=16t²

At t=2 seconds then

s(2)=16*2²=16*4=64

Since we're not given the units, it may be feet, inches, meters, kilometers, miles etc. Therefore, the diatance is equal to 64 units

7 0

3 years ago

Ivan purchased stock in a company at an initial price of $8 per share. The share value reached $18 after 10 days and then began

Butoxors [25]

The quadratic equation that best represents his model of the relationship between stock value and time is given by:

$y = -0.0976(x - 10)^2 + 18, x \geq 0$

The graph is given at the end of the answer.

<h3>What is the equation of a parabola given it’s vertex?</h3>

The equation of a quadratic function, of vertex (h,k), is given by:

$y = a(x - h)^2 + k$

In which a is the leading coefficient.

In this problem, the maximum value was a share value of $18 after 10 days, hence the vertex is:

(h,k) = (10,18).

Thus:

$y = a(x - 10)^2 + 18$

Since the initial price was of $8 per share, we have that:

$8 = a(0 - 10)^2 + 18$

$-82a = 8$

$a = -\frac{8}{82}$

$a = -0.0976$

Hence the equation is:

$y = -0.0976(x - 10)^2 + 18, x \geq 0$

At the end of the answer, the sketch of the graph is given.

More can be learned about quadratic equations at brainly.com/question/24737967

6 0

3 years ago