Two cities are 3500 miles apart. A plane leaves one of them, traveling towards the other at an average speed of 300 miles per hour. At the same time a plane leaves the other, traveling towards the first, at an average speed of 400 miles per hour. How long will it take them to meet?

Answers

Answer 1

Answer:

5 hours

Step-by-step explanation:

If you multiply 400 by 5 it equals to 2000 miles and 300 by 5 is equal to 1500 miles and if you plus them together it is equal to 3500 miles so It would take 5 hours for them to reach each other


Related Questions

Suppose you are flying a kite at the park on a windy day. You notice that the height of the kite, h, is
affected by the speed of the wind, w. You decide to measure the height of the kite at different wind
speeds to determine the relationship between the two variables. After some experimentation, you
measure the height of the kite at three different wind speeds: 10 mph, 15 mph, and 20 mph. You
measure the height of the kite to be 50 feet at 10 mph, 75 feet at 15 mph, and 100 feet at 20 mph.
Determine the equations that relate the height of the kite to the speed of the wind.

Answers

The equation that relates the height of the kite to the speed of the wind is: h = 5w.

What is slope?

In mathematics, slope refers to the steepness or incline of a line on a graph. It is a measure of how much the dependent variable changes for every unit change in the independent variable.

To determine the relationship between the height of the kite and the speed of the wind, we can use linear regression to fit a line to the data points we have measured. The line will take the form y = mx + b, where y is the height of the kite, x is the speed of the wind, m is the slope of the line, and b is the y-intercept.

Using the three data points we have, we can calculate the slope of the line as follows:

m = (y2 - y1) / (x2 - x1)

= (75 - 50) / (15 - 10)

= 25/5

= 5

Therefore, the equation for the line is y = 5x + b. To find the value of b, we can use one of the data points.

For example, using the point (10, 50):

50 = 5(10) + b

b = 0

So the equation that relates the height of the kite to the speed of the wind is:

h = 5w

where h is the height of the kite in feet, and w is the speed of the wind in mph.

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how would i anwser this? help pls!

how would i anwser this? help pls!

Answers

Answer:

Step-by-step explanation:

To get the y values all you need to do is substitute the x value in the equation y=-2/3x+7.

For example:

y=-2/3(-6)=7

-2/3x6=-4

-4+7=3

(-6,3)

You can double check your work by filling the x and y coordinates in the equation and when solved if it it true you know you were correct.

To get the x value, you need to fill in the y in the equation y=-2/3x+7

for example:

5=-2/3x+7

-2=-2/3x

3=x

(3,5)

y=-2/3x+7

y=-2/3(15)+7

y=-10+7

y=-3

(15,-3)

y=-2/3x+7

15=-2/3x+7

8=-2/3x

-12=x

(-12,15)

The coordinate plane shows a line traveling through two points.

The coordinates that represent another point on the line are


a (3,5)

b (3,2)

c (5,3)

d (6,7)

The coordinate plane shows a line traveling through two points.The coordinates that represent another

Answers

A. (3,5) represent another point on the line

Using the DMS method to describe an angle, one degree of angle measurement can be divided into how many minutes?

A.100'
B.360'
C.60'
D.90'

Answers

Answer: I am 97% sure it's D

Step-by-step explanation:

Please help me with this proof.​

Please help me with this proof.

Answers

Answer:

See below

Step-by-step explanation:

For the second step, \(\angle T\cong\angle R\) by Alternate Interior Angles. The rest of the steps appear to be correct.

28+16x^4 i need it factored completely

Answers

Answer:

\(4(x^4+7)\)

Step-by-step explanation:

Taking out the greatest common factor,\(16x^4+28=4(x^4+7)\).

Using the distributive property, an expression equivalent to 48 + 30 is
5 (6 + 8).
(6) (8) + (3) (10).
(3) (16) + (6) (5).
6 (8 + 5).

Answers

Answer:

d. 6(8+5)

Step-by-step explanation:

First you distribute the 6 to the 8 which gets you 48 and then you distribute the 6 to the 5 to get 30

so you would get 48+30

therefore, d is true

Answer: (6) (8) + (3) (10) and (3) (16) + (6) (5) and 6 (8 + 5) all of them is the same answer as 48+30=78

Step-by-step explanation: Hope this help:D

Find the area of the shaded region. Round results to the nearest unit.

Find the area of the shaded region. Round results to the nearest unit.

Answers

Answer: 211 in²

Step-by-step explanation:

To find the area of the shaded region, you want to find the area of the rectangle, then subtract the area of the circle and the triangle. First, we need to find the area of the triangle. We know that there is a circle because 2 halves make a full circle.

Area of Circle

A=πr²

A=π(6)²                 [exponent]

A=36π                   [multiply]

A=113

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

Area of Triangle

A=bh/2

A=(18)(12)/2         [multiply]

A=216/2               [divide]

A=108

Now that we have the area of the shapes, let's find the area of the entire rectangle.

A=lw              

A=(36)(12)            [multiply]

A=432

With the area of the rectangle, we can subtract the areas.

432-108-113=211

The area of the shaded region is 211 in².

Answer; 211 in^2




sorry if i got it wrong

The point P=(1/2,y)lies on the unit circle shown below. What is the value of y in simplest form?

Answers

The value of y in simplest form for the point P = (1/2, y) lying on the unit circle is y = ± √(3)/2.

To find the value of y in simplest form for the point P = (1/2, y) lying on the unit circle, we can use the equation of the unit circle, which states that for any point (x, y) on the unit circle, the following equation holds: x^2 + y^2 = 1.

Plugging in the coordinates of the point P = (1/2, y), we get:

(1/2)^2 + y^2 = 1

1/4 + y^2 = 1

y^2 = 1 - 1/4

y^2 = 3/4.

To simplify y^2 = 3/4, we take the square root of both sides:y = ± √(3/4).

Now, we need to simplify √(3/4). Since 3 and 4 share a common factor of 1, we can simplify further: y = ± √(3/4) = ± √(3)/√(4) = ± √(3)/2.

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Masud rode his bike 48 miles in 6 days. He rode the same number of miles
each day. How many miles did he ride each day?
A 7
B 8
C 9
D 42

Answers

B 8 because 8x6 is 48

Arun, David and Raj each used a piece of wire measuring 32cm in length to make a shape. Arun made a square with a side of length 8cm. David made a rectangle with a length of 9cm. Raj made a rectangle with breadth of 10cm. Who made a shape with the greatest area?

Answers

The area of the quadrilateral increases as the lengths of the sides become

the same.

Arun made the shape (square) with the greatest area

Reasons:

Length of the wire = 32 cm

Length of side of square Arun made, s = 8 cm

Perimeter of the square, P = 4 × 8 cm = 32 cm = Length of the wire

Area of the square Arun made, A = s² = 8 cm × 8 cm = 64 cm²

Length of a side of the rectangle David made, L = 9 cm

Perimeter of the rectangle, P = 32 cm = 2·L + 2·B

Where;

B = The breadth of the rectangle

Therefore;

P =  32 cm = 2·L + 2·B = 2 × 9 cm + 2·B

2·B = 32 cm - 2 × 9 cm = 14 cm

B = 14 cm ÷ 2 = 7 cm

The breadth of the rectangle David made B = 7 cm

Therefore;

The area of the rectangle David made, A = 9 cm × 7 cm = 56 cm²

Breadth of the rectangle Raj made, B = 10 cm

Therefore;

32 cm = 2·L + 2 × 10 cm

2·L = 32 cm - 2 × 10 cm = 12 cm

L = 12 cm ÷ 2 = 6 cm

The length of the rectangle Raj made, L = 6 cm

Area of the rectangle Raj made, A = 10 cm × 6 cm = 60 cm²

Therefore;

The square made by Arun that has an area of 64 cm² is the shape with the greatest area.

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After adding the two equations to eliminate x you are left with 4y=-8. Solve for y: y =

Answers

Answer:  -2

Step-by-step explanation:

4y/4 = -8/4

     y = -2

Answer:

Step-by-step explanation:

Answer is -2

Find the formula for the geometric sequence 1, 5, 25, 125, .

Answers

The formula for a geometric sequence is an = a1 * r^n-1. For this problem, our formula can be an = 1 * 5^n-1. a1 is our first term, and r is the common ratio.

To check our formula, we can find the 5th term. a5 = 1 * 5^5-1. This gives us 625. If we look at our last term provided, the 4th term, 125 * 5 is 625.

what is the measure of an angle that is supplementary to 20 degrees?

Answers

Answer: Sum of 180˚

Step-by-step explanation:

Hence, the supplement of a 20˚ angle is a 160˚ angle. This can be proven again, since 20+160=180 , and supplementary angles have a sum of 180˚ .

you had eight hours until you have to be on set if you will spend 3/4 of an hour driving to the TV station how much time does that leave you to get everything ready

Answers

Answer:

7 hours and 15 minutes

Step-by-step explanation:

8 - 3/4 = 7 1/4 hours

Question 14 (essay worth 12 points)
(writing two step equations HC)

Given the equation 6x + 18 = 72:
Part A: Write a short word problem about a purchase made to illustrate the equation. (6 points)
Part B: Solve the equation showing all work. (4 points)
Part C: Explain what the value of the variable represents. (2 points) ​

Question 14 (essay worth 12 points) (writing two step equations HC) Given the equation 6x + 18 = 72:

Answers

A. Ram spent $18 on six pens and six books. The grand total is $72.

B. The cost of each pen is $9.

C. The variable is called x.

What is an equation?

A set of variables, constants, and mathematical operations such as addition, subtraction, multiplication, or division balanced by the equal sign is known as an equation. The equation's left-hand side (LHS) is on the left side, and its right-hand side (RHS) is on the right side (RHS).

Here, we have

Given: the equation 6x + 18 = 72:

A. The issue is that Ram spent $18 on six pens and six books. The total amount he paid is $72.

B. The following equation will be used to demonstrate this:

6x + 18 = 72

Compile similar terms.

6x = 72 - 18

6x = 54

On dividing,

x = 54 / 6.

x = $9

Hence, each pen will set you back $9.

C. The variable's value is x = 9.

Hence, the pen's price is 9.

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Quality management charges 7.5% monthly rent on properties it manages. If they manage nine different condos that rent for 1300 a month each, what is the total annual amount they earn from those properties?

Answers

The amount obtained after 1 year from the whole property is obtained as $27866.82.

What is compound interest?

The compound interest is can be considered as a case when the interest is added for every interval of time.

The amount for the previous interval becomes the principal for the current one.

The total rent for 9 condos = 9 × 1300 = $11700.

The rate of interest is 7.5% monthly.

Total time = 1 year = 12 months.
The given problem is the case of compound interest for which the expression is given as follows,

A = P(1 + r/100)ⁿ

Substitute the corresponding values to obtain,

A  = 11700(1 + 7.5/100)¹²

    = 27866.82

Hence, the total annual amount received is given as $27866.82.

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I need this math questioned answered fast please!!

I need this math questioned answered fast please!!

Answers

Answer:

It is the last one

Step-by-step explanation:

How is 1.2 x 10 written is standard decimal notation?​

Answers

Answer:

12

Step-by-step explanation:

1.2*10 = 1.2

Answer:

12

Step-by-step explanation:

the "normal form" to write numbers : just the digits and a decimal point when needed.

so, 1.2 × 10 = 12

12 is the normal, standard decimal notation.

in some cases it can be also 12.0 or 12.00 (especially with money).

the other form is the scientific notation, where a number is written with its leading digits and the power of 10 as the total value "weight". like in this example 1.2 × 10¹

HELP I WILL GIVE LOTS OF BRIANLY POINTS!!!!!!! PLZ EXPLAINM A BIT TOO FOR BRAINLY REWARD!!!

A weather reporter states that the high temperature is expected to be 20℉ and the low temperature is expected to be - 5℉. What is the difference between the two temperatures?

Answers

Answer: 25

Step-by-step explanation:

20 - 25 = -5

20 - 20 = 0

0 - 5 = -5


Find the value of x.
f(x) = 10^x; f(x) = 10^-3

4
-3
3
-4

Answers

Answer:

x=-3

Step-by-step explanation:

Given, f(x) = 10^-3 and f(x)=10^x

Compare the equations

10^-3=10^x

So, x=-3

Error Analysis A math test asks the students to solve the inequality X-2511, and then graph the
solutions. Mason said the solutions are x s9 and graphed the solutions as shown below. Solve the
inequality and graph the solutions. What error might Mason have made?
What are the solutions?
X

Answers

Answer: x < 18

Step-by-step explanation:

x - 2 < 16

We eliminate 2 to isolate the variable, x by adding 2 to both sides. -2 + 2 = 0.

x < 18

We can test this because 17 is less than 18. Pretend x = 17

17 < 18✅

Mason subtracted 2, instead of adding 2.

In order to graph this, put an open circle at 18, and the arrow should point to the left.

Leila runs 9 miles in 72 minutes. How many minutes does she take per mile?

Answers

Answer:

8 minutes/1 mile

Step-by-step explanation:

72/9=8     9/9=1

Answer:

12 mins per mile

0.0833 miles per minute

5 miles per hour

The answer u need is 12 mins per mile tho

:)

help
A pizza is cut into ten slices. How many slices are there in six pizzas?
On the double number line below, fill in the given values, then use multiplication o
division to find the missing value:
slices
pizzas
There are 60 slices in 6 pizzas. Submit Answer
attempt 1 out

Answers

Answer:

60 slices

Step-by-step explanation:

1 pizza = 10 slices

6 pizzas = 10 slices * 6 = 60 slices

If f(x)=x^3-2,find f(3)

Answers

Answer:

\(f(3)=25\)

Step-by-step explanation:

Hi there!

\(f(x)=x^3-2\)

Replace x with 3

\(f(3)=3^3-2\\f(3)=27-2\\f(3)=25\)

I hope this helps!

Sketch the region enclosed by the given curves. Decide whether to integrate with respect to x or y. Then find the area of the region.
y=6x^2 , y=x^2+6

Answers

The area of the region enclosed by the curves y=6x² and y=x²+6 is 8.76 unit square and has been drawn.

What is definite integral mean?

The definite integral of a function over a limit represents the area under the curve bounded by the limit as given in integration.

As per the given curves,

y=6x² and y=x²+6

The above curves have been drawn.

The intersection points can be calculated by equating both equations as (-1.095,7.2) and (1.095,7.2).

The area enclosed will be as follows,

Area =  \(\int\limits^{1.095}_{-1.095} {[(x^{2}+6)-6x^{2}]} \, dx\)

A = - 5/3[1.095³ + 1.095³] + 6[1.095 + 1.095]

A =  8.76 unit square.

Hence "8.76 unit squares make up the region that is encompassed by the curves y=6x² and y=x²+6".

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The library has 65400 art books and 9600 science books. What part of all the books are science books.

Answers

Answer: it should be 12.8 percent

Step-by-step explanation:

A researcher investigated whether following a vegetarian diet could help to reduce blood pressure. For a sample of 85 people who followed a vegetarian diet for 4 months, the mean systolic blood pressure was 124 mmHg. For a sample of 75 people who followed a non-vegetarian diet for 4 months, the mean systolic blood pressure was 138 mmHg. Methods of statistics show that if a vegetarian diet had no effect on blood pressure, there would be less than 1 chance in 100 of getting these results. Does the result have statistical significance? Why or why not? Does the result have practical significance?

Answers

Answer:

Yes, the result does not have statistical significance

Yes, the result has practical significance

Step-by-step explanation:

An experiment or claim may be said to be statistically significant if it's occurence is likely not due to chance for a certain level of stated significance. From the scenario described, it is stated that if vegetarian diet has no effect on blood, then the result obtained wipukd likely occur in less Than 1 of 100 ; this is < 0.01. This means that the effect of vegetarian diet on blood could not have occurred by chance. Hence, result is statistically significant.

The result does have practical significance too, since there is a distinctive difference in blood pressure of non - vegetarians(138mmHg) and Vegetarians (124mmHg).

Dividing by a Monomial
What is (9x^3-6x^2+15x) ÷ 3x^2?

Answers

Answer:
\(3x-2+\frac{5}{x}\)

Step-by-step explanation:

To divide the polynomial (9x^3 - 6x^2 + 15x) by the monomial 3x^2, we can write it as:

(9x^3 - 6x^2 + 15x) ÷ (3x^2)

To simplify the division, we divide each term of the polynomial by 3x^2:

(9x^3 ÷ 3x^2) - (6x^2 ÷ 3x^2) + (15x ÷ 3x^2)

To divide monomials with the same base, we subtract the exponents. So:

9x^3 ÷ 3x^2 = 9/3 * (x^3/x^2) = 3x^(3-2) = 3x

(-6x^2) ÷ (3x^2) = -6/3 * (x^2/x^2) = -2

15x ÷ 3x^2 = 15/3 * (x/x^2) = 5/x

Putting it all together, we have:

(9x^3 - 6x^2 + 15x) ÷ (3x^2) = 3x - 2 + 5/x

Therefore, the division of (9x^3 - 6x^2 + 15x) by 3x^2 is 3x - 2 + 5/x.

A backpack that normally sells for 400 dollars is on sale for 33 percent off. Find the new sale price

Answers

Answer:

268

Step-by-step explanation:

400  - 0.33 * 400 = 268

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