All categories

1 year ago

A cleaning services charges $1000 for cleaning 20 offices. Cost of cleaning one office is _

Mathematics

2 answers:

Sholpan [36]1 year ago

4 0

Answer:

The cost of cleaning one office is $50.

Step-by-step explanation:

You need to divide 1000 by 20.

Hope this helps!

vovikov84 [41]1 year ago

3 0

The answer is 50 you would take the 1000 and divide it by 20 to figure out the answer to one which is 50

You might be interested in

If y is 15 times x, which equation shows the relationship between x and y?

zhannawk [14.2K]

Is= equals sign
times= multiplication

So y equals 15 times x

y= 15 * x
y= 15x

ANSWER: y= 15x (bottom choice)

Hope this helps! :)

4 0

3 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

Which 2 statements are true

Inessa [10]

Answer:

Good luck in Geometry my guy!

6 0

3 years ago

You buy a game for $40$40, and the sales tax is $2$2. what percent of the game price are you paying in sales tax?

Cloud [144]

Lets take $40 as 100% ,
2/40 = 0.05
0.05x100 = 5 %
Hence you paid 5% sales tax

7 0

3 years ago

60% of the 50 students in Jessie’s gym class are 12 years old. How many students in Jessie’s class are 12 years old?

viva [34]

Answer:

30 students

100 ÷ 20 = 50

60 ÷ 2 = 30 students

30 of the 50 students are 12 years old.

Step-by-step explanation:

60% of 50

60 : 100

X : 50

60/100 × 50

3/5 × 50 = 30

5 0

3 years ago

Read 2 more answers