can someone help me please

Answer:

The total cost of the cleaning service is $180

Step-by-step explanation:

We have, 30% × x = 54

or,

30/100 × x = 54

Multiplying both sides by 100 and dividing both sides by 30,

we have x = 54 × 100/30

x = 180

If you are using a calculator, simply enter 54×100÷30, which will give you the answer.

Answer:

D. 1 3/4

Step-by-step explanation:

Answer:

-1/7

Step-by-step explanation:

-3/5(2/7)+4/35-3/10(2/7)

-3/5(2/7)+4/35-3/10(1/7)

-6/35+4/35-3/5(1/7)

-6/35+4/35-3/35

-1/7

Answer:

Area = 45

Step-by-step explanation:

Solve:

Now using the formula if:

x = 7

y = 3

h = 9

Area = (X+Y)(h)

Area = (7+3)(9)

Area = (10)(9)

Area = 90

Kavinsky

Step-by-step explanation:

there is a right angled triangle.

25+4 = 29 = slant ht^2

h = 5.38 units

Answer: C , explanation at the bottom

Step-by-step explanation:

Step 1: Find the volume of tank 1

V= Lwh

l= 6in

w= 1.5in

h= 3in

6x1.5x3= 27

Step 2: Find the volume of tank 2

l= 2 in

w= 1.5 in

h= 9 in

2x1.5x9= 27

Step 3: Compare

27=27

answer= C

Explanation: Since they have the same volume, they can hold the same amounts. Using the formula V=lwh, I multiplied the lengths, widths, and heights of both tanks and then compared their volumes.

Answer: The price of maximum sales is $160

Step-by-step explanation:

This question requires you to find the vertex of this equation. The vertex of a parabola is the point where the parabola crosses its axis of symmetry.

since the coefficient of the [tex]x^2[/tex] term is negative, the vertex will be the highest point on the graph.

this quadratic equation is in standard form: [tex]y = ax^2+bx+c[/tex].

From this, we can derive:

[tex]a = -3[/tex]

[tex]b = 60[/tex]

[tex]c = 1060[/tex]

First, determine the axis of symmetry ([tex]p[/tex] is the variable for the horizontal axis ([tex]x[/tex]) in this instance). This will be our x-coordinate of the vertex.

[tex]p = \frac{-b}{2a}[/tex]

[tex]p = \frac{-(60)}{2(-3)}[/tex]

[tex]p = \frac{-60}{-6}[/tex]

[tex]p=10[/tex]

Then, substitute the axis of symmetry into the function to find the y coordinate of the axis of symmetry. r stands for the variable for the vertical axis in this instance. This will be our y-coordinate of the vertex.

[tex]r = -3(10)^2+60(10)+1060[/tex]

[tex]r = 160[/tex]

As we have determined both the x and y coordinate of the vertex for this equation, we can determine that the maximum point is at [tex](10, 160)[/tex].

the maximum price ([tex]r[/tex]) is 160

Answer:

34.september has the most adults

35. 30 was the least number of students to visit.

36. the children showed the largest drop between months.

37. 15 more children than adults in may

Step-by-step explanation: if you look at the chart key and the numbers put on the side you will be able to see the differences in the adults and children's information

(5x5 -28 =56

Step-by-step explanation its simple.

Answer:

d

Step-by-step explanation:

use your brain

Answer:

i do believe it is 316 inch

Step-by-step explanation:

Answer:

D. 38

Step-by-step explanation:

Answer:

8to4

Step-by-step explanation:

for every 8 girls there are 4 boys

Answer:

4:8  1:2

Step-by-step explanation:

So 8 boys to 16 girls is 8:16, then you can divide by 2 to get 4:8 becuase 4:8 and 8:16 are equal and 1:2 and 8:16 are equal.

To understand how to do this problem, we have to look at examples to figure it out. One example would be, if I had a whole cake and cut into 2 pieces I would have two halves, and if I cut it into 4 pieces, I'll have 4 quarters of cake, so 2/2 (two halves) = 4/4 (4 quarters). If I ate 1/2 I would have

(Keep in mind that Equivalent fractions are fractions that are equal to each other)

So to solve these we have to figure out the equal fractions. To do this, we start by multiplying by 2.

(the * symbol is multiplication)

So 3/4 would be 3*2=6 and 4*2=8 so it would be 6/8

Now we can try multiplying it by 3

3*3=9 and 4*3=12 so the 2nd would be 9/12

And we multiply it by 4 now,

3*4=12 and 4*4=16 so the 3th would be 12/16

So, therefore, the answers for 3/4 are 6/8, 9/12, & 12/16.

I'm also going to give you a simplified number that you can use to solve the other problems easier.

3/7 is 3/7. (cannot be simplified)

18/27 is 2/3.

20/80 is 1/4.

You can use these three numbers to start and multiply by 2 and 3 for the other two numbers.

I just gave you a very easy was to solve them and a simple calculator or doing the simple math will be able to help you figure out the rest.

Good luck!

~Red Retriever~

Answer:

Your answer is: 3:2

Step-by-step explanation:

You can see this because there are 3 black circles shown, and 2 white circles.

Since it goes from black to white you first do black which is 3, then to white which is 2.

Meaning you answer is:

B: 3:2

Answer:

2.15 or 2

Step-by-step explanation:

Answer:

66 in^2

Step-by-step explanation:

Answer: I beileve its skewed left after all most of the dots are on the left

Step-by-step explanation:

Answer:

This looks like a skewed right plot.

Answer: 105 in^2

Step-by-step explanation: The area of the square is 25 because 5x5=25. The area of each triangle is 20, because to find a triangle it is BxH/2. so 5x8/2=20. Multiply this by four because there are four triangles and add the area of the square. So 20x4= 80. 80+25=105

Answer:10

Step-by-step explanation

Because Each string is cut into several pieces of the same length and no string is left over.

Answer:

Equivalent expressions: negative numbers & distribution

Step-by-step explanation:

Answer:

23

Step-by-step explanation:

its going down lower minus by 6.

the x means the answer/number.

the answer is 23 of what i think

Answer: 25w

Step-by-step explanation:

You multiply the amount earned ($25) by the number of weeks,(which is unknown in this case and can be represented as w).