Mathematics Middle School

the distance around the tire or a motorized scooter is 21.98. the tires make one revolutioneer 1/10 second.Find the speed of the scooter in miles per hour.

Answers

Answer 1

for every 1/10 second it travels 21.98 inches

for a full second it travels 21.98 x 10 = 219.8 inches

for 1 minute it travels 219.8 x 60 = 2820 inches / 12 = 235 feet per minute

235*60 = 14100 feet per hour

5280 feet per mile

14100/5280 = 2.67 = 2.7 miles per hour

Answer 2

The speed of the scooter with a tire circumference of 21.98 inches rotating at 1/10 second per revolution is approximately 12.5 mph after converting the distance traveled in inches per second to miles per hour.

To calculate the speed of the scooter in miles per hour, we first need to determine how far the scooter travels in 1 second. Since the tires make one revolution every 1/10 of a second, and the distance around one tire is 21.98 inches, in one second the tire will cover a distance equal to 10 revolutions (because 1 second divided by 1/10 second per revolution equals 10 revolutions). Hence, the scooter travels 21.98 inches imes 10 revolutions = 219.8 inches per second.

To convert this speed to miles per hour, we'll first convert inches to miles (1 mile = 63,360 inches), then seconds to hours (1 hour = 3600 seconds).

Calculate Miles per Hour
Speed in miles per second = 219.8 inches/s imes (1 mile / 63360 inches) = 0.003468 miles per second.
Speed in miles per hour = 0.003468 miles/s imes 3600 s/h = 12.4848 mph.

Therefore, the speed of the scooter is approximately 12.5 mph.

Related Questions

If the width of a rectangle is x + 2 and the length is twice as long, what is the area?

Answers

[tex]A=(x+2)(2(x+2)=(x+2)(2x+4)=2x^2+4x+4x+8=\\ =x^2+8x+8[/tex]

Round 992,449 to the nearest hundred thousand

Answers

Hey! Hope that this helps.

992,449 rounded nearest to 100,000 is 1000,000.

After 9, we have another 9 which is greater than 5, so we must add 1 to the 9. The rounded value must have 5 zeros. On adding 1, the value becomes ten hundred thousand.

Hope it helped!

Elevator 1 moved up 15 feet from the ground level. Its position is labeled as +15. Elevator 2 moved down 6 feet from the ground level. Its position is labeled as _____. (Use the hyphen for negative such as -1)

Answers

The ground level is to be the zero level. When the elevator moves above the ground level, it is moving towards the positive integer and when the elevator moves below the ground level, it is moving towards the negative integer.

Elevator 2 moved down 6 feet from the ground level hence its position is labelled as [tex]-6[/tex]

Answer:

-6

Step-by-step explanation:

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Help pleasee i am beggin

Answers

There are infinitely many solutions

I believe that there are infinite.

Pre-image point N(6, -3) was dilated to point N'(2, -1). What was the scale factor used?

1/2
1/3
3
2

Answers

1/3 because:

(1/3)(6, -3)=(2, -1)

The answer to this question is 1/3

Fraction 14 divided into 18

Answers

Since we need to find how many times 18 goes into 212, we do 212/18=11 and some more

What is the answer to 6,007,200 in exspanded form

Answers

6,000,000 + 7,000+ 200 is your expanded form

hope this helps

The number 6,007,200 in expanded form is written as 6,000,000 + 7,000 + 200, breaking down the number by each digit's place value.

To write the number 6,007,200 in expanded form, we break it down based on the place value of each digit. Here is how you would write it:

Identify the value of each digit in the number.

Starting from the left, write each digit multiplied by its place value.

Add each of these values together.

Applying this to the number 6,007,200, we get:

6,000,000 (6 millions) + 7,000 (7 thousands) + 200 (2 hundreds)

Therefore, the expanded form of 6,007,200 is:

6,000,000 + 7,000 + 200

Miguel typed 270 words in 6 minutes. His paper is 630 words. If he keeps typing at the same rate, in how many more minutes will Miguel finish typing his paper?

A. 8 minutes
B. 14 minutes
C. 16 minutes
D. 22 minutes

Answers

630-270 = 360 words remaining

Rate = 270words/6min=45wpm

Time left = 360words/45wpm = 8mins.

270/6, 630/x
you just cross multiply
270x=6*630
x=6*630/270
x=14

What is the relationship between 8.76 x 10^6 and 8.76 x 10^2

Answers

8.76×10^6 is 35340.4 and 8.76×10^2 is 647.3.

Hope this helps.

An equilateral triangle has a perimeter of 15x3 + 33x5 feet. What is the length of each side? x3 feet

Answers

In any case, divide by three: equilateral=same sides, triangle=3 sides

Let x represent one side of equilateral triangle.
Next, we know that the perimeter of the equilateral triangle= side+side+side,so
P=x+x+x with the P=15x^3+33x^5 feet
15x^3+33x^5=3x
Divided both side by 3
(15x^3+33x^5)/3=3x/3
x=5x^3+11x^5
x=x³(5+11x²) feet. As a result, the length of each side is x³(5+11x²) feet. Hope it help!

A store sells cooking oil of two different brands in bottles of the same size. The table below and the equation each show the price (y) in dollars of different numbers of bottles of oil (x)

Brand A
Number of bottles (x).
2
3
4
5
Price (dollars) y
22
33
44
55

Brand B:
Y=17x

How many dollars more is the price of 8 bottles of Brand B than the price of 8 bottles of Brand A oil?

Answers

the answer is 48 dollars more

Answer:

The number of dollars more is the price of 8 bottles of Brand B than the price of 8 bottles of Brand A oil is:

$ 48

Step-by-step explanation:

Brand A--

Number of bottles (x) Price (dollars) y

2 22

3 33

4 44

5 55

The function that represents the relation between the price of the bottles and the number of bottles is:

y=11x

Brand B--

Also, the price of the bottles depending on the number of bottles is:

Y=17x

According to Brand A the price of 8 bottles is: y=11×8=$ 88

and according to Brand B the price of 8 bottles is: y=17×8= $ 136

Also, the difference in the price of Brand B to that of Brand A for 8 bottles is:

$ 136-$ 88

= $ 48

−5=−8−x What is x? Solve for x

Answers

Hello there!

-5 = -8 -x
First, we need to get x isolated (put on one side of the equation by itself), and then divide by -1 to get rid of the negative sign.
Add 8 to both sides.
-5 + 8 = 3
-8 + 8 = 0
You are left with:
-x = 3
Now, we must divide both sides by -1 to solve for x.
-x / -1 = x
3 / -1 = -3
You are now left with the following solution:
x = -3

I hope this helps!

The weight of 10 identical samples of a substance is 0.01 pound what is the weight of 10,000 samples

Answers

We use ratios here.

For every 10 samples, the total weight is 0.01 lb.

We write
10 / 0.01.

We want to find the weight of 10,000 samples.

We write
10,000/?

These two ratios must equal each other.

(10 / 0.01) = (10,000 / ?)

If you know how to cross-multiply, then we can do that here.
0.01 * 10000 = 10 * ?
100 = 10 * ?

The unknown value is 10, which is your answer.

Answer:

The weight of 10,000 samples is:

10 pounds.

Step-by-step explanation:

It is given that:

The weight of 10 identical samples of a substance is 0.01 pound.

i.e. 10 samples= 0.01 pound.

Now we are asked to find the weight of 10,000 samples.

Since,

10 samples= 0.01 pound.

1000×10 samples= 1000×0.01 pounds

i.e.

10000 samples= 10 pounds.

Hence, the answer is: 10 pounds.

Roman mixes 12 liters of 8% acid solution with a 20% acid solution, which results in a 16% acid solution. Find the number of liters of 20% acid solution in the new mixture. Construct a table to organize the information, and show all of your work to solve the problem

Answers

(12(0.08)+x(0.2))/(12+x)=0.16 perform indicated multiplication on left side

(0.96+0.2x)/(12+x)=0.16 multiply both sides by (12+x)

0.96+0.2x=1.92+0.16x subtract 0.16x from both sides

0.96+0.04x=1.92 subtract 0.96 from both sides

0.04x=0.96 divide both sides by 0.04

x=24

So 24 liters of 20% acid solution is in the new mixture.

A man owned 5/8 of an interest in a house. He sold 1/5 of his interest, at a cost for $1000. What is the total value of the house? Explain how u solved it.

Answers

First you would have to find a common denominator with 1/5 and 5/8, which would be 40. So, they would now be 8/40 and 25/40. If 8/40 is $1,000, then you need to figure out how many 8/40 you need to get 40/40. You need 5 8/40, so you multiply $1,000 by 5 to get $5,000, which is the answer.

Carina spent a total of $5.27 buying a pineapple for $3.40 and several pounds of tomatoes that were on sale for $0.85 per pound. To determine the number of pounds of tomatoes that she bought, x, Carina wrote and solved the equation as shown below.

Answers

okay so I'm going to set up a equation:

5.27= 3.40+ 0.85x, we have our total our price of one pineapple and our variable

next I isolate the variable:

5.27-3.40=0.85x

next:

1.87=0.85x

x= 2.2

she bought 2.2 pounds of tomatoes

Answer:

pretty sure its B.

Step-by-step explanation:

Subtract.

14x-(6+7x)

(Simplify answer)

Answers

14x-(6+7x)
=14x-6-7x
=14x-7x-6
=(14x-7x)-6
=7x-6x

We can simplify an expression by distributing if needed and combing terms if needed.

In the expression 14x - 6 + 7x the terms 14x and 7x are like terms. Because they both have the same variable and are to the same power.

14x - 6 + 7x
21x - 6

So, 21x - 6 is the answer.

A carton has a length of fraction 2 1/6 feet, width of fraction 1 and 1/5 and height of fraction 2 and 1/2 feet. What is the volume of the carton

Answers

he volume of the carton = length * width * height
= 2 1/6 * 1 1/5 * 2 1/5 = 13/2 = 6 1/2 = 6.5 cubic feet

hope that helps

First right answer gets brain

Answers

The answer is C i think

The Answer would be A because the 3rd quadrant requires all points, or in this case, vertex coordinates to be negative (-x,-y). A is the only answer that has all vertex coordinates (-x,-y).

The diagram shows A's coordinates plotted out. You can confirm that the original and new, translated shape are congruent and in the 3rd quadrant.

2/7 times 2/6 = what

Answers

4/7 or 0.571429 :) :)

2/7 x 2/6 = 4/42

simplified = 2/21

hope this helps

an airplane is flying from montreal to vancouver. the wind is blowing from the west at 60km/h. the airplane flies at an airspeed of 750km/h and must stay on a heading of 65 degrees west of north. what heading should the pilot take to compensate for the wind? what is the speed of the airplane relative to the ground?

Answers

Refer to the diagram shown below.

In order for the airplane to maintain a heading of 65° west of north, it actually heads at (65° +x) west of north at a speed of 750 km/h, to compensate for the wind blowing from west t east at 60 km/h.

The actual speed of the airplane relative to the ground is V km/h.

From geometry, obtain the triangle shown.
The speed of 750 km/h is opposite an angle of 155°, and the unknown angle x is opposite the wind speed of 60 km/h.

From the Law of Sines, obtain
[tex] \frac{sin(x)}{60}= \frac{sin(155^{o}}{750} \\ sin(x)= (\frac{60}{750})sin(155^{o})=0.0338[/tex]
[tex]x=sin^{-1}0.0338=1.937^{o}[/tex]

The heading that the pilot should take is 65 + 1.937 = 66.94° west of north.

The third angle of the triangle is 180 - (155 + 1.937) = 23.063°.
Use the Law of Sines to calculate V.
[tex] \frac{V}{sin(23.063^{o})}= \frac{750}{sin(155^{o})} [/tex]
[tex]V=( \frac{sin(23.063)}{sin(155)} )750=695.21\,km/h[/tex]

Answer:
The pilot heads approximately 67° (nearest integer) west of north.
The speed of the airplane relative to ground is 695.2 km/h (nearest tenth)

What are the x-intercepts of the graph of the function f(x) = x2 + 4x – 12?

(–6, 0), (2,0)
(–2, –16), (0, –12)
(–6, 0), (–2, –16), (2, 0)
(0, –12), (–6, 0), (2, 0)

Answers

Answer:

x-intercepts are (-6,0 and (2,0)

First option is correct.

Step-by-step explanation:

The given equation is [tex]y=x^2+4x-12[/tex]

For x-intercept, y=f(x)=0. Thus, we have

[tex]0=x^2+4x-12[/tex]

We can split the middle term as 4x = 6x-2x

Thus, the equation becomes

[tex]x^2+6x-2x-12=0[/tex]

Now, we make group

[tex](x^2+6x)+(-2x-12)=0[/tex]

Take GCF from each of the group

[tex]x(x+6)-2(x+6)=0[/tex]

Factored out the common term

[tex](x+6)(x-2)=0[/tex]

Apply the zero product property,

[tex]x+6=0,x-2=0[/tex]

Solve for x

[tex]x-6,x=2[/tex]

Thus, x-intercepts are (-6,0 and (2,0)

First option is correct.

Answer:

Step-by-step explanation:

The set of ordered pairs described in the table below can be described as which of the following?
x y
1 5
2 2
3 5

a relation only

a function only

both a relation and a function

neither a relation nor a function

Answers

The set of ordered pairs are both relation and function

It is a function because, for every value of x, there is one unique value of y

It is a 'relation' because there is a relation between two sets of values; set of x-values and set of y-values

A function is one example of a 'relation'.

Sydney applied the steps below to find the product of (3.1)(–1.6).

Step 1: (3.1)(–1.6) = (–1.6)(3.1)
Step 2: = _______________
Step 3: = (–4.8) + (–0.16)
Step 4: = –4.96

Which expression correctly fills in the blank in Step 2?
(1.6)(3) – (1.6)(0.1)
(–1)(3) + (–0.6)(0.1)
(1)(3) – (0.6)(0.1)
(–1.6)(3) + (–1.6)(0.1

Answers

(-1.6)(3)+(-1.6)(0.1)

Answer with explanation:

We have to find the product of

⇒(3.1)× (-1.6)

Step 1:→ (3.1)(–1.6) = (–1.6)(3.1)

Step 2: = -1.6×(3 + 0.1)=(-1.6) ×3 + (-1.6)×(0.1)→→We have used Distributive property of addition with respect to Multiplication, which is , a × (b + c)=a×b + a × c

Step 3: = (–4.8) + (–0.16)

Step 4: = –4.96

The expression which correctly fills the blank is:

Option D: →→ (–1.6)(3) + (–1.6)(0.1)

What is the point-slope form of a line with slope -3 that contains the point (10,-1)?

Answers

The point slope form is y+1=-3(x-10).

-3x-y+29=0 The point (10,-0) is (h,k) to set up the problem it will be y-h=m(x-k)
while m is the slope and then you just simplify.

how many 1/4 pound patties can be made from 5 pounds of chicken?

i will give brainliest to 1 out of how ever many answer!

Answers

20patties(^o^)lellelelel

Find the perimeter of the following shape, rounded to the nearest tenth: Shape ABCD is shown. Point A is at -3,5. Point B is at 2,6. Point C is at 0, 2. Point D is at -5, 1.

Answers

By turning the points into triangles and using Pythagorean theorem you can solve for the lonest side(of the triangle) which is Equal to that side.
AB [(3-2)^2]+[(6-1)^2]=square root of (1+25)=Square root of 26= 5.099
If you do this for all 4 sides and add them up you get the answer:
P(perimeter)=19.1

Find the area of the figure shown. Use 3.14 to approximate pi

Answers

alrighty

we gots 1/4 circle and paralellogram

area circle=pi times radius^2
area paralelogram=base times height

1/4 circle is
radius is 10 so
area part circle is 1/4 times pi times 10^2=100/4pi=25pi=78.5 m²

area paralllogram is
10 times 3 because 3 is height and 10 is base length or 30

30+78.5=108.5 m² is the area

C+1/c-2 = 4/7 please show how you got the answer which is 5

Answers

Assuming the equation is (c+1)/(c-2) = 4/7, the answer is actually c = -5

(c+1)/(c-2) = 4/7
7*(c+1) = 4*(c-2) ... cross multiply
7c+7 = 4c-8
7c+7-7 = 4c-8-7 ... subtract 7 from both sides
7c = 4c-15
7c-4c = 4c-15-4c ... subtract 4c from both sides
3c = -15
3c/3 = -15/3 ... divide both sides by 3
c = -5

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

Check:

(c+1)/(c-2) = 4/7
(-5+1)/(-5-2) = 4/7 ... replace every copy of 'c' with '-5'
(-4)/(-7) = 4/7
4/7 = 4/7 .. true equation; answer checks out

So the answer of c = -5 has been confirmed.

Kevin had six nickels and 4 dimes in his pocket. If he took out one coin and then a second coin without replacing the first coin-- a) what is the probability that both coins were nickels. b) what is the probability that both coins were dimes. c) what is the probability that the first coin was a nickel and the second a dime

Answers

Alright so A is 6/10 * 5/9 = 1/3
B is 4/10 * 7/9 = 2/15
C is 6/10 * 4/9 = 4/15

I hope this helps

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