a skyscraper contains 80 floors, with adjacent floors 10 feet apart. an elevator in the skyscraper is ascending at a rate of 5 feet per second. how long will it take the elevator to ascend from the 4th floor to the 28th floor?

Hi there!

~

\(2 \frac{1}{4} \div ( \frac{3}{8} \div \frac{1}{2} )\)

\(= 3\)

Hope this helped you!

Answer:

1 11/16

Step-by-step explanation:

Answer:

25

Step-by-step explanation:

4a +12 -2c + c

4( ) + 12 - 2( ) + ( )

4(4) + 12 - 2(3) + 3

16 + 12 - 6 + 3

28 - 6 + 3

22 + 3

25

Helping in the name of Jesus.

Therefore,  4a  +   12   -   2c   +   c  =   25

       a  =   4  

       c  =   3

        4a  +   12   -   2c   +   c

       (4)(4)  +  12  -     (2)(3)   +    3

         16     +   12   -   (2)(3)   +    3

         28      -            (2)(3)    +    3

         28     -   6     +     3

         22    +      3   =   25

Draw a conclusion:

     4a  +   12   -   2c   +   c   =  25

I hope this helps!

Answer:

1. 9, 4

2. 46, 10

3. 18, 14

4. 10, 14

5. 17, 32

6. 5, 7

7. 3, 70

8. 3, 20, 10

9. 7, 16

10. 7, 5

11. 9, 120

12. 12, 1

Step-by-step explanation:

Definition of coefficient. Your welcome :)

Explanation:

The data from the stem-and-leaf plot is:

10,

24,25,26,

30,30,32,33,

40,45,46

Add up those values

10+24+25+26+30+30+32+33+40+45+46 = 341

Then divide over n = 11 which is the sample size.

341/11 = 31 is the arithmetic mean.

Answer:

341/11 = 31 is the arithmetic mean.

Step-by-step explanation:

Negative 3, negative 2.4, negative 1.5, negative 2 and one-fourth, negative 1 and one-eighth

Hope my answer helps you✌️

Answer: d

Step-by-step explanation: y= +3x -6

Answer:

Zero

Step-by-step explanation:

because, if the Discriminant of f is positive, it intersects the x-axis twice; if it’s negative, it intersects the x axis 0 times, but if it intersects the x axis or touches it in 1 point, then the Discriminant is 0!

As you can see in this graph, the x-axis and parabola only touch/intersect in 1 point, so the Discriminant of f is zero

Hope this helps!

Answer: Discriminant is zero

Step-by-step explanation:

If negative, the vertex of the graph will be above the x-axis, if positive it will be below the x-axis, and zero if it is directly on the x-axis.

Step-by-step explanation:

draw a horizontal line from the vertical axis where 1.5 ft is, which indicates the length in feet then if it touches the line of the graph, then from the point, it touches the line Trace it down to the horizontal axis. and get the answer. the point where it touches the horizontal axis indicates the length in inches.

To solve the equation for y, we need to get y by itself on one side of the equation.

The first step is to get rid of the fraction on the right side of the equation by multiplying both sides by 4:

4y + 28 = x + 16

Then, we need to move the x term to the left side of the equation by subtracting x from both sides:

4y + 28 - x = 16

Then, we need to move the constant term 28 to the left side of the equation by subtracting 28 from both sides:

4y - x = -12

Finally, we have the equation in the form y = (1/4)x - 3, so the solution for y is y = (1/4)x - 3

It is important to note that in this solution we have used the distributive property and followed the order of operations to get to the final result, if you don't follow this steps you might get a different result.

STEPS FOR SOLVING LINEAR EQUATIONy+7=45​(x+16)Use the distributive property to multiply 45​ by x+16.y+7=45​x+20Swap sides so that all variable terms are on the left hand side.45​x+20=y+7Subtract 20 from both sides.45​x=y+7−20Subtract 20 from 7 to get −13.45​x=y−13Divide both sides of the equation by 45​, which is the same as multiplying both sides by the reciprocal of the fraction.45​45​x​=45​y−13​Dividing by 45​ undoes the multiplication by 45​.x=45​y−13​Divide y−13 by 45​ by multiplying y−13 by the reciprocal of 45​.x=54y−52​SOLVE FOR Yy=45x​+13

Answer:

The first option, V ≈ 1607.7 in²

Step-by-step explanation:

Find the volume of the given cylinder.

\(\begin{center}\framebox{\parbox{4cm}{\textbf{Volume of a Cylinder:}\\[2ex]The volume of a cylinder with radius $r$ and height $h$ is given by the formula:\\[2ex]\center{$V = \pi r^2 h$} \\ \\}}\end{center}\)

Given:

r = 8 in

h = 8 in

π = 3.14

Find:

V = ?? in³

\(\hrulefill\)

Now solving,

Substitute the given values into the formula:

=> V = (3.14)(8)²(8)

Using a calculator to simplify:

=> V = 1607.68 in²

Rounded to the nearest tenth:

∴ V ≈ 1607.7 in²

Thus, the first option is correct.

4 + [4 × (5 - 2)] ÷ 2

= 4 + [4 × 3] ÷ 2

= 4 + 12 ÷ 2

= 4 + 6

= 10

note : division, multiplication, and parentheses are done before addition or subtraction (except those listed in parentheses)

Answer:

31

Step-by-step explanation:

9/10÷1/10=9

2 1/5 = 11/5 = 22/10

22/10 ÷ 1/10 = 22

22+9= 31

Answer:

The answer is angleCGD....only

Answer:

37.5

Step-by-step explanation:

cosФ = \(\frac{A}{H}\)

cos(33°35') = \(\frac{m}{45}\)

m = 45 × cos(33°35')

m = 37.5 (1d.p.)

Answer:

7m

Step-by-step explanation:

v=πr^2h

769.3=3.14*r^2*5

769.3=15.7r^2

769.3/15.7=15.7r^2/15.7

49=r^2

√49=√r^2

√49=r

r=7m

Answer:

f(x)= -54

Step-by-step explanation:

f(x)=y x=-2

y=2(-2)^5 - 3(-2)^3 - 8(-2)^2 - 9(-2)

y=2(-32) - 3(-8) - 8(4) - 9(-2)

y= -64 + 24 - 32 + 18

y= -54

Answer:

25.685 square feet.

Step-by-step explanation:

Circumference = 2 * π * radius

From this, we can derive the formula for the radius:

radius = Circumference / (2 * π)

Let's substitute the value of the circumference and calculate the approximate radius:

radius = 18 / (2 * π)

radius ≈ 18 / (2 * 3.14159)

radius ≈ 2.865 feet

Now that we have the approximate radius, we can calculate the area:

Area ≈ π * radius²

Area ≈ 3.14159 * (2.865)²

Area ≈ 3.14159 * 8.193225

Area ≈ 25.685 square feet

Therefore, the approximate area inside the circular park is approximately 25.685 square feet.

Answer:

14.4

Step-by-step explanation:

Divide 18 miles by 5 hours to tell us how many miles she can do in 1 hour.

Multiply the answer by 4 to tell us how many miles in 4 hours.

(18/5) * 4 = 14.4 Miles

Answer:

14.4 miles

Step-by-step explanation:

To answer this question you first need to find out what Amanda can jog in 1 hour. I can do this by dividing by 5, since the question tells me that she jogs 18 miles in 5 hours. So, I do 18 divided by 5, which gives me 3.6. I now know that in one hour, she can jog 3.6 miles.

The next step is to multiply by 4, because I want to know what she can do in 4 hours. So, I do 3.6 multiplied by 4, which gives me 14.4. I now know she can jog 14.4 miles in 4 hours, which is my final answer,

Answer:

C is the correct answer

Step-by-step explanation:

C. 20y + 13 is the answer

Hope this helped! :)

Answer:

C. 20y + 13

Step-by-step explanation:

collect like terms

16y+4y+9+4

20y + 13

Answer: Rahul earns 3.5 dollars more per hour than Arun.

Step-by-step explanation:

17.3 is the slope of Arun's earnings. To find what Rahul makes in an hour, you can find the slope of his graph below.

Use the two points, (10,208) and (20, 416)

Use the formula for calculating slope:

416-208=208

20-10=10

---------------------

208/10= 20.8

Rahul's equation can be set up like this:

y=20.8x

Subtract:

20.8-17.3=3.5

Therefore, Rahul earns 3.50 dollars more per hour than Arun.

Answer:

Step-by-step explanation:

n(U)=100%

n(S)=70%

n(W)=15%

n(S union w compliment)=20%

n(s intersection W)=?

n(u)=n(s)+ n(w)+ n(s union w compliment)- n(s intersection w)

or 100%=70% +15%+ 20% - n( s intersection w)

or 100%= 95%- n(s intersection w)

or 100%-95%=n(s intersection w)

or 5%= n( s intersection w)

now;

n(only w)=n(w)- n(s intersection w)

              =15%- 5%

               =10%

10%of people only like winter season.

i think the question is to find people who only like winter season.

if not then ans is 15% according to question.

a) The illustration of the given information in a Venn diagram is attached.

b) The percentage of people who liked both seasons is 45%.

c) If 180 people liked the summer season only, proportionately, the number of people who liked the winter season only is 300.

The Venn diagram, which shows similarities and contrasts, can be illustrated based on the given percentages.

Percentages are one of the ways to depict proportions, which are the equation of two ratios.

The percentage of survey people who liked the summer season = 60%

The percentage of survey people who liked the winter season = 70%

The percentage of survey people who liked none of the seasons = 15%

The percentage of participants who liked one of the seasons = 85% (100% - 15%)

The total percentage of survey people who liked either summer or winter = 130% (60% + 70%)

b) The percentage of survey people who liked both seasons = 45% (130% - 85%)

The percentage that liked only summer = 15% (60% - 45%)

The percentage that liked only winter = 25% (70% - 45%)

c) 180 people liked summer only

180 = 15%

Proportionately, if 180 = 15% of the people, the total number of people = 1,200 (180/15%)

The number of people who liked winter season only = 300 (1,200 x 25%)

Learn more about Venn Diagram at https://brainly.com/question/28060706.

#SPJ2

Answer:

375 seats are filled.

Step-by-step explanation:

The first step is to convert three fourths into a decimal.

In order to do so, I need to divide the numerator and the denominator.

3 ÷ 4 = 0.75

Now we need to multiply 0.75 by 500 beacause 0.75 were the number of seats filled and 500 was the number of seats.

0.75 x 500 = 375

So 375 seats are filled.

selam

500:4=125

125.3=375

cevap=375

Step-by-step explanation: