All categories

3 years ago

Percentage of 50 shirts is 35 shirts

Mathematics

1 answer:

Katyanochek1 [597]3 years ago

6 0

It would be 70% I think

You might be interested in

Solve for m: (5m-3n)/q=f

LenaWriter [7]

Do you need the work, or just the answer?

7 0

3 years ago

What is the value of x in the equation 4x+8y=40 , when y=0.8 ?

solniwko [45]

x = 8.4

Steps:

Multiply the numbers: 4x + 6.4 =40
Move the Constant to the right: 4x = 40 - 6.4
Subtract the numbers: 4x = 33.6
Divide 4 for both sides : 8.6

6 0

4 years ago

Graph f(x) =-2x^+16x-30 by factoring to find the solutions, then find the coordinates of the vertex, and the axis of symmetry. I

fredd [130]

Answer:

Observe attached image

Function zeros:

(3, 0), (5, 0)

Vertex:

(4, 2)

Axis of symmetry:

 $x =4$ 

Step-by-step explanation:

First factorize the function

$f (x) = -2x ^ 2 + 16x-30$

Take -2 as a common factor.

$-2(x ^ 2 -8x +15)$

Now factor the expression $x ^ 2 -8x +15$

You must find two numbers that when you add them, obtain the result -8 and multiplying those numbers results in 15.

These numbers are -5 and -3

Then we can factor the expression in the following way:

$f (x) = -2(x-5)(x-3)$

The quadratic function cuts the x-axis at x = 3 and at x = 5.

Now we find the coordinates of the vertex.

For a function of the form $ax ^ 2 + bx + c$ the x coordinate of its vertex is:

$x = \frac{-b}{2a}$

In the function $f (x) = -2x ^ 2 + 16x-30$

$a = -2\\b = 16\\c = 30$

Then the vertice is:

$x = \frac{-16}{2(-2)}\\\\x = 4$

The y coordinate of the symmetry axis is

$y = f (4) = -2 (4) ^ 2 +16 (4) -30\\\\y = 2$

The axis of symmetry is a vertical line that cuts the parabola in two equal halves. This axis of symmetry always passes through the vertex.

Then the axis of symmetry is the line

$x = 4$

The solutions and the vertice written as ordered pairs are:

Function zeros:

(3, 0), (5, 0)

Vertex:

(4, 2)

6 0

3 years ago

The difference of twice a number and five is three. Find the num

Grace [21]

Answer:

add 5 then multiply by 1/2

Step-by-step explanation:

Twice a number is 2n.

The difference of twice a number and five 2n - 5.

The difference of twice a number and five is three. 2n - 5 = 3

2n - 5 = 3

2n - 5 + 5 = 3 + 5 (1) add 5

2n = 8

1/2*2n = 1/2*8 (2) multiply by 1/2

n = 4

7 0

3 years ago

vipins age in 15 years will be 5 less than three times of his age now. what will be his age after 20 years from now?

Shalnov [3]

Answer:

40.

Step-by-step explanation:

15*3-5=40

15*3=45

45-5=40

4 0

3 years ago