The ratio of youths to adults at a skating rink is 13:7. What percent of these people are youths?

Answers

Answer 1

The percentage of people at the scathing ring that are Youth is 65%. You would have to add 13 + 7, to get 20. Then you do 100 percent divided by 20 to get 5. Finally, you would do 5 times 13 to reach 65%.

Answer 2

65%, is the answer why is the question/??? BECAUSE I SAID SO

Related Questions

I don't understand this

Answers

All the right triangles are similar.

x is the short side of the triangle with hypotenuse (2+8)=10.
x is the hypotenuse of the triangle with short side of length 2.

x/2 = 10/x . . . . ratio of hypotenuse to short side is the same for similar triangles
x^2 = 20 . . . . . multiply by 2x
x = √20 ≈ 4.47 . . . . . . . matches selection G

Which equation represents a football player who runs 5yds/sec and starts on the 25 yard line?

Question 1 options:

y = 5x + 25

y = 5x - 25

y = 25x + 5

y = 25x - 5

Based on these equations, which one represents the greatest rate?

Question 2 options:

y = 1/2 x + 8

y = 2x + 4

y = 4x + 2

y = 7x + 5

Answers

Question 1 is y= 25x +5
Question 2 is y=7x +5

Solution:

Question 1:

we are given that

A football player who runs 5yds/sec and starts on the 25 yard line.

So here rate is 5yds/sec

and 25 yards is the y- intercept.

Hence it can be written as

[tex]y=5x+25[/tex]

Question 2:

Based on the given equations, which one represents the greatest rate?

As we know in the standard form of equation of starlight line

[tex]y=mx+b[/tex]

m represents the rate or gradient.

As we can observe from the given options [tex]y = 7x + 5[/tex] has the greatest gradient.

Hence the correct option is [tex]y = 7x + 5[/tex]

the hour hand on a clock is 7.5 centimeters long. What distance does the tip travel in one complete rotation,to the nearest centimeter?

Answers

One complete round = [tex]2 \pi r[/tex] = 2 x [tex] \pi [/tex] x 7.5 = 47cm (Round to nearest cm)

An architect is designing square windows with an area of ( x 2 + 20x + 100) ft2 . The dimensions of the windows are of the form ax + b, where a and b are whole numbers.

a. Find the dimensions of each square window.
b. Find an expression for the perimeter of a window.
c. Find the perimeter of a window when x = 4.

Answers

A) The dimensions are (x+10) by (x+10).
B) The perimeter is given by 4x+40.
C) The perimeter when x is 4 is 56.

The quadratic can be factored by finding factors of c, the constant, that sum to b, the coefficient of x. Our c is 100 and our b is 20; we want factors of 100 that sum to 20. 10*10=100 and 10+10=20, so those are what we need. This gives us (x+10)(x+10 for the factored form.
Since the dimensions are all (x+10), and there are 4 sides, the perimeter is given by 4(x+10). Using the distributive property we have 4*x+4*10=4x+40.
To find the perimeter when x=4, substitute 4 into our perimeter expression:
4*4+40=16+40=56.

A news anchorman can read 7.5 lines in 0.5 minutes. How many lines can he read in 8.5 minutes? Round the answer to the nearest tenth, if necessary.

A. 15.0 lines B. 127.5 lines
C. 31.9 lines D. 2.7 lines

Answers

The answer is 127.5 Lines.

which function defines the sequence -6, -10, -14, -18, where f(6)=-26

Answers

f(x) = -4 1/3x. if x is 6 and f(6) is equal to -26 then the slope is -4 1/3

Mathematics defines function as an expression that points a relationship between two variables.

Sequence is a list of numbers in certain order.

The function that defines the sequence -6,-10,-14,-18 is [tex]\rm f(x)= -4x-2[/tex]

To justify above answer, following calculations are required:

Given:

[tex]\rm f(1)=-6\\f(2)=-10\\f(3)=-14\\f(4)=-18\\f(6)=-26[/tex]

Substituting x=1 in function [tex]\rm f(x)= -4x-2[/tex]

[tex]\begin{aligned}\rm f(1)&= -4(1)-2\\&=-6\end[/tex]

x=2

[tex]\begin{aligned} \rm f(2)&= -4(2)-2\\&=-10\end[/tex]

x=6

[tex]\begin{aligned}\rm f(6)&= -4(6)-2\\&=26\end[/tex]

Therefore the function [tex]\rm f(x)= -4x-2[/tex] defines the sequence.

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If the ratio of boys to girls is 1:4 and there are 20 girls in your class, how many boys are there?

Answers

there are 5 boys in the class

there are 5 boys in this class

Mr.Johansson's truck weighs 3 tons. How many ounces does it weigh

Answers

Final answer:

To convert the 3-ton weight of Mr. Johansson's truck to ounces, we multiply 3 tons by 2,000 to get pounds and then multiply that figure by 16 to get 96,000 ounces.

Explanation:

Mr. Johansson's truck weighs 3 tons. To convert this weight to ounces, we need to know that one ton is equal to 2,000 pounds and one pound is equal to 16 ounces.

First, we convert tons to pounds:
3 tons x 2,000 pounds/ton = 6,000 pounds

Next, we convert pounds to ounces:
6,000 pounds x 16 ounces/pound = 96,000 ounces

Therefore, the weight of Mr. Johansson's truck is 96,000 ounces. This conversion showcases the application of the conversion factors between tons, pounds, and ounces, providing a precise measure of the truck's weight in a more universally comprehensible unit.

Final answer:

The truck weighs 96,000 ounces.

Explanation:

To convert tons to ounces, we can use the conversion factor that 1 ton is equal to 32,000 ounces.

So, to find how many ounces the truck weighs, we can multiply the weight of the truck in tons by the conversion factor.

Weight of the truck in ounces = Weight of the truck in tons x Conversion factor

Weight of the truck in ounces = 3 tons x 32,000 ounces/ton

Weight of the truck in ounces = 96,000 ounces.

Help with this question please

Answers

Let's simplify both sides to get:
[tex]7y+14 = 9+8y-2[/tex]

Now we need to solve for y:
[tex]14 = 9+y-2[/tex]
[tex]14 = 7+y[/tex]
[tex]y = 7[/tex]

So, your answer is A.

Hey there! :D

7(y+2)= (81÷9)+ (8y-2)

Distribute the 7.

7y+14= (81÷9) + 8y-2

7y+14= 9+8y-2

7y+14= 8y+7

Subtract 7 on both sides.

7y+7= 8y

Subtract 7y on both sides.

7=y

"A" is the correct answer.

I hope this helps!
~kaikers

Please help!!!!

Question on image and question below.

Find the missing value to nearest hundredth.

cos____=7/18

Answers

Answer:
question (1)
height of building = 308 ft
question (2)
cos 67.11 = 7/18

Explanation:
question (1)
Taking a look at the triangle, we can see that it is a right-angled triangle. This means that we can apply the special trigonometric identities.
The one we will use here is:
tan Θ = opposite / adjacent
where:
Θ = 72
the opposite side is the height of the building
the adjacent side = 100 ft
Substitute to get the height as follows:
tan(72) = height / 100
height = tan(72)*100 = 307.76 which is approximately 308 ft

question (2):
We are given that:
cos Θ = 7/18
therefore:
Θ = cos^-1(7/18)
Θ = 67.114
approximating to the nearest tenth, we would find that:
Θ = 67.11°

Hope this helps :)

Help please! Not sure what this is

Answers

B. Rotation
I’m assuming the question is not asking about placement but just the way the shape is.
Hope this helps!

the answer is A because it not rotation

how many times does a person blink in 1.5 min

Answers

About 22-30 times in 1.5 minutes

Write the resultant if the 2 vectors as an ordered pair.

<5, -2> and <0,0>

Answers

To find the resultant vector, you need to base the solution from the Pythagorean Theorem.

Step 1. Find z1 by adding x1^2 and y1^2.
z1= 5^2 + 0^2 = 5

Step 2. Find z2 by adding x2^2 and y2^2.
z2= -2^2 + 0^2 = 2

Step 3. Find c.
5^2 + 2^2 = c^2
c=square root of 29
c=5.39

The final answer is 5.39.

A rectangle 7 feet longer than it is wide find the dimensions of the rectangle if its area is one 198 sq ft.

Answers

w=width l=length
l=w+7

w(w+7)=198
w^2+7w-198=0
(w-11)(w+18)=0
w=11 or -18

w=11 and l=18

A data set contains three points, and two of the residuals are -10 and -20. What is the third residual?

Answers

The residuals of any data set should get added to zero. If there are three residuals (say A, B, and C) in any data set, then it could be written as A + B + C = 0.

Given are the two residuals -10 and -20 out of three point in a particular data set.

Let's assume A = -10 and B = -20, so that we could find third value C of the given data set.

We know A + B + C = 0

(-10) + (-20) + C = 0

(-30) + C = 0

C = 30

It means that third residual must be 30.

Hence, the final answer is 30.

Answer:

Step-by-step explanation:

I need the right answer please

Answers

B is the correct answer i have that same question that i answered a few min ago and i got it right so hope this help's!

the graph below could be the graph of which exponential function

Answers

answer is C.

F(x) = 3 * (1.7)^x

Answer:

The correct option is C.

Step-by-step explanation:

∵ The given graph is of increasing nature.

∴The base of the exponential will be greater than 1.

∴ option A is incorrect.

Also, at x=0 the value of y=3, but in option B at x=0 ⇒y= 3^0 =1

∴ option B is also incorrect.

At x=0, y=3 for option 3 which satisfies the graph.

∴ the option C is correct.

option D is incorrect because the base of an exponential can never be negative.

What is the solution of the system? Use either the substitution method or the elimination method. 4x + 2y = 104x + 2y = 10 x − y = 13x − y = 13
There is no solution.
(3.5, −1)
(6, −7)
(−7.5, 2)

Answers

4x+2y=10 Equation 1
x-y=13 Equation 2
Solving by substitution method.
Isolate x from equation 2.
x=y+13
Substitute value of x in equation 1
4(y+13)+2y=10
4y+52+2y=10
6y+52=10
6y=-42
y=-7
Now substitute value of y in x=y+13
x=-7+13
x=6

Answer: (6,-7)

The figure is a cylinder with a sphere within it.

To the nearest whole number, what is the approximate volume of the shaded part of this figure?

Use 3.14 for Pi.

Drag the correct value to the box.

Answers

I am so sorry if I am wrong but I had this question b4 and I'm pretty sure the answer was 7238

Answer:

[tex]2713cm^3[/tex]

Step-by-step explanation:

From the given figure, the radius of the cylinder is=8cm, height of cylinder is =18cm and the radius of the sphere is= 6cm.

Thus, [tex]Volume of cylinder={\pi}r^2h[/tex]

[tex]V=3.14(8)^{2}(18)[/tex]

[tex]V=3.14(64)(18)[/tex]

[tex]V=3617.28cm^3[/tex]

And [tex]volume of sphere=\frac{4}{3}{\pi}r^3[/tex]

[tex]V=\frac{4}{3}(3.14)(6)^3[/tex]

[tex]V=\frac{4}{3}(3.14)(216)[/tex]

[tex]V=904.31cm^3[/tex]

Thus, the volume of the shaded part of the figure=Volume of cylinder-volume of sphere

⇒volume of the shaded part of the figure=[tex]3617.28-904.31[/tex]

=[tex]2712.97[/tex]

≈[tex]2713cm^3[/tex]

Thus,volume of the shaded part of the figure=[tex]2713cm^3[/tex]

A car travels 20 mph slower in a bad rain storm than in sunny weather. the car travels the same distance in 2 hrs in sunny weather as it does in 3 hrs in rainy weather. find the speed of the car in sunny weather. PLEASE SHOW YOUR WORK.

Answers

You can create two equations.

"A car travels 20 mph slower in a bad rain storm than in sunny weather."

[tex]\sf x-20=y[/tex]

Where 'x' represents speed in sunny weather and 'y' represents speed in rainy weather.

"The car travels the same distance in 2 hrs in sunny weather as it does in 3 hrs in rainy weather."

[tex]\sf 2x=3y[/tex]

Where 'x' represents speed in sunny weather and 'y' represents speed in rainy weather.

We want to find the speed of the car in sunny weather, or 'x'. Plug in the value for 'y' in the first equation into the second equation.

[tex]\sf \boxed{\sf x-20}=y[/tex]
[tex]\sf 2x=3y\rightarrow2x=3(x-20)[/tex]

Distribute:

[tex]\sf 2x=3x-60[/tex]

Subtract 3x to both sides:

[tex]\sf -x=-60[/tex]

Divide -1 to both sides:

[tex]\sf x=60[/tex]

So the car goes 60 mph in sunny weather.

The speed of the car in sunny weather is calculated to be 60 mph, given that it travels the same distance in less time compared to its speed in a rainy weather, which is 20 mph slower.

Finding the Car's Speed in Sunny Weather:

Let's assume the speed of the car in sunny weather is s mph. Therefore, the speed of the car in a rain storm would be (s - 20) mph. Given that the car travels the same distance in both weathers, we can use the formula distance = speed * time to express the distance travelled in sunny weather and rainy weather.

In sunny weather, the car travels for 2 hours, hence the distance covered is 2s miles. In rainy weather, it travels for 3 hours, covering a distance of 3(s - 20) miles.

Since the distances are equal, we can equate them and solve for s:

2s = 3(s - 20)

2s = 3s - 60

s = 60 mph

Therefore, the speed of the car in sunny weather is 60 mph.

The area of a rectangle is 1,176 square meters.The width of the rectangle is 21 meters.What is the length of the rectangle?

Answers

area/width

=length

=1176÷21

=56m

Answer:

Length = 56 meters

Step-by-step explanation:

We can find the length of the rectangle which has an area of 1,176 square meters and width of 21 meters with this formula:

[tex]\boxed{Area(A)=length(l)\times width(w)}[/tex]

Given:

[tex]A=1,176\ m^2[/tex][tex]w=21\ m[/tex]

Then:

[tex]\begin{aligned}A&=l\times w\\1,176&=l\times21\\l&=1,176\div21\\l&=56\ m\end{aligned}[/tex]

If AB represents 50% , what is the length of a line segment that is 100%

A ----------------------------------------------B. . 3in.

Answers

The overall length would be 6in

The sum of five consecutive even integers is 120, what is the 5th number in the sequence

Answers

120/5 = 24

so 20 + 22 +24 +26 +28 = 120

5th number = 28

Alfred made 21 goals in 3.5 minutes. What is Alfred’s unit rate?

Answers

6 goals a minute. divide 21 by 3.5.

A car travels 120 miles in 3 hours (with a constant speed). How far will it take to travel 200 miles?

Answers

120 miles = 3 hrs
1 mile = 3/120 = 1/40
200 miles = 1/40 × 200
= 5 hrs

im sure you will get it in no time google the answer like i just did and the first thing that came up got you man !!

isabella is covering a square tabletop with square mossaic tiles.the tabletop is 2ft. long and 2ft.wide.each tile is 1/4 in.long and 1/4in.wide.what is the minimum number of tiles needed to cover the tabletop?

Answers

Convert the feet to inches first. 2 ft = 24 inches. We must divide this total length by the length of each tile to determine how many tiles will fit across the tabletop:

24 ÷ (1/4) = (24/1) ÷ (1/4) = (24/1) × (4/1) = 96/1 = 96

96 tiles will fit across the tabletop.
Since the tabletop is as long as it is wide, that means we will have 96 rows of 96 tiles:
96(96) = 9,216 tiles to cover the tabletop.

Final answer:

Isabella needs a minimum of 9216 tiles to cover her 2ft by 2ft tabletop. This is calculated by converting all measurements to inches, finding the area of both the tabletop and a single tile, and dividing the total area of the tabletop by the area of a single tile.

Explanation:

To answer Isabella's question let's first convert everything into the same units to make it easier. The tabletop in inches would be 2ft * 12in/ft = 24in by 24in. The area of the tabletop is then 24in * 24in = 576in^2. Each tile is 1/4in by 1/4in in size, so the area of a single tile is 1/4in * 1/4in = 0.0625in^2. To find the minimum number of tiles needed to cover the tabletop, divide the total area of the tabletop by the area of a single tile: 576in^2 / 0.0625in^2 = 9216 tiles. Therefore, Isabella needs a minimum of 9216 tiles to cover the square tabletop.

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What is the period of the function f(x) shown in the graph?

Answers

For this case what you should see is when the value "y" of any point of the graph is repeated again.
In this case we have that the period will be given by:
T = ((3/4) pi) - ((- 1/4) pi)
T = ((3/4) pi) + ((1/4) pi)
T = ((3 + 1/4) pi)
T = ((4/4) pi)
T = pi
Answer:
the period of the function f(x) shown in the graph is
T = pi

Solve the following equation for x: 6(4x+5)= 3(x+8)+3. Round to the nearest hundredth.

Answers

6(4x + 5) = 3(x + 8) + 3
24x + 30 = 3x + 24 + 3
24x + 30 = 3x + 27
24x - 3x = 27 - 30
21x = - 3
x = -3/21
x = - 0.143 <==

Hey there! :D

6(4x+5)=3(x+8)+3

Distribute.

24x+30=3x+24+3

24x+30=3x+27

Subtract 30 on both sides.

24x= 3x-3

Subtract 3x on both sides.

21x=3

Divide both sides by 21.

x=0.142857... the question said hundredth so:

x=0.143

I hope this helps!
~kaikers

What are the coordinates of the hole in the graph of the function f(x) ?
f(x)=x2−9x−3

Answers

Answer:

(3,6)

Step-by-step explanation:

Believe me this is correct I just did the test

Final answer:

There is no hole in the graph of the function f(x) = x^2 - 9x - 3.

Explanation:

To find the coordinates of the hole in the graph of the function f(x) = x^2 - 9x - 3, we need to determine the x-value at which the function is undefined. This occurs when the denominator of the function is equal to zero. In this case, the function has no denominator, so there is no hole in the graph.

Work out the circumference of this circle.
Take pi to be 3.142 and give your answer to 1 decimal place
The radius is 4cm

Answers

C=2pir
C=2 x 3.142 x 4
C=25.136

Circumference of the circle is 25.136 cm with radius 4 cm.

What is Circle?

The circle is a closed two dimensional figure , in which the set of all points is equidistance from the center.

We have to given that;

The radius of circle = 4 cm

We know that;

The circumference of circle = 2πr

Where, 'r' is radius of circle.

So, We get;

The circumference of circle = 2πr

= 2 × 3.142 × 4

= 25.136 cm

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