Mathematics Middle School

The height of an airplane during a landing is given by 22,000+(−480t) where t is the time in minutes.

a. Complete the table.

Time (minutes) 5   10   15   20
------------------------------------------------------
Height (feet)

Please help!

Answers

Answer 1
Literally plugging in the time for each value, we can plug in 5 for t to get 
22000+(-480*5)=22000+(-2400)=22000-2400=19800
Plugging in 10, we get 22000+(-480*10)=22000-4800=17200. We can turn 22000+(-480*10) into 22000-(480*10) using the distributive property, and adding a negative number to something essentially means to subtract that number.

I challenge you to do t=15 and 20 on your own!


Related Questions

what is the simplified form of the expression 11[(9^2-5^2) divided by 2^2+8]
224.5
242
51.3
110

Answers

[tex] \frac{11(9^2-5^2)}{2^2+8} = \frac{11(81-25)}{4+8} = \frac{11*56}{12} = \frac{11*28}{6} = \frac{11*14}{3} = \frac{154}{3} [/tex]= 51.333333333 ≈ 51.3

Hence, the answer is C.

Answer:

51.3

Step-by-step explanation:

In order to calculate this, you have to remember the norms for the solution of math problems with hierarchy of operations called PEMDAS:

   Parentheses (simplify inside 'em)

   Exponents

   Multiplication and Division (from left to right)

   Addition and Subtraction (from left to right)

So we first solve parentheses:

11[(9^2-5^2)= 11(81-25)=11(56)= 616.

and now we have to divide that by the result of:

2^2+8

Remember first exponents:

2^2+8= 4+8=12

ANd now we just divide:

616/12=51.3333

So the answer would be 51.3

The perimeter of a rectangle is 108 inches. It is twice as long as it is wide.Find the length; the width.Draw the figure.

Answers

answer is given above
36 + 36 +18 + 18 = 108

Length: 36"
Width: 18"

I'll leave you to do the drawing. Besides, 36" wouldn't fit on any old A4 sheet of paper.

Can anyone help me with this question?

Answers

Since a cube is essentially 6 squares, and the base, length, and height is ∛(volume)=∛(27)=3 due to that a cube is base*width*height, with each being the same. Each square is 3*3=9 square centimeters. 6 equal squares are 9*6=54 square centimeters. which is 1 cube. 54*2=108, 54*3=162, and we have 6*27=162 square inches, meaning that we have 3 cubes!

find the range of f(x)=-3x+1 if the domain is (x=-2,7(

Answers

To find the range of this function, simply plug each of the end values into the original equation. In this case, with x of -2, the function becomes f(x) = 6+1 or 7, and with x of 7, the function becomes f(x) = -21+1 or -20. As such, the range of the function is -21 <= f(x) <= 7.

The following is the correct way to begin solving for the quotient of 39.538 divided by 5.3 using the standard method:


True
or
false

Answers

I would say true, because by saying 39.538 divided by 5.3, you are splitting 39.538 into 5.3 groups which equals about 7.46. Hope this helps!

Answer:

true

Step-by-step explanation:

39.538 divided by 5.3 using standard method. Which is true

multiply (2.75×10−8)⋅(4.6×10−3)

Answers

2.75 times 10 is 27.5 minus 8 is 19.3.
4.6 times 10 is 46 minus 3 is 43

Then 19.3 times 43 equals 829.9.
so your answer is 829.9.
2.75 * 10 - 8=19.5 
4.6 *10 - 3= 43
19.5 * 43=838.5 
Good Luck, hope this helps 

find the perimeter of the polygon with the given vertices

G(2,4), H(2,-3), J(-2,-3), K(-2,4)

Answers

I graphed these vertices myself in the attached photo, and it turned out to be a rectangle;  With the thought that you perhaps made a typo and meant rectangle instead of polygon I continued on and found the perimeter of the rectangle.  

The formula for finding the perimeter of a rectangle is P = 2(l+w).  

I counted the units of the long side (K & J) to get the length, which is 7.

Next, I counted the units between J & H to find the width which is 4.  Now we're ready to use the formula.  

First I will add the length plus the width, 7 + 4 = 11.  

Then I will multiply 2 x 11 to get a product of 22.  

P = 22.  :D 

one eighth of a number is less than or equal to 3

Answers

1/8x<3 x<24
one eighth of 3 is less than 24

Write -7 - (-4) as an addition problem. Then simplify the expression.

Answers

-7 + 4

if you subtract a negative it turns it into a positive, so just take away the negative and turn the sub into an addition sign

In order from least to greatest what is 19% 19/20 1.9% 1.9 x 10 to the power of 5

Answers

1.9%, 19%, 19/20, 1.9x10 

Jim spends 3 1/2 days a month away from home if he does this for 6 1/2 months how many days would Jim be away from home

Answers

Final answer:

Jim would be away from home for approximately 23 days.

Explanation:

To find out how many days Jim would be away from home, we need to multiply the number of days he spends away from home in a month by the number of months he does this for:

3 1/2 days x 6 1/2 months = (7/2) x (13/2) = 91/4 = 22.75 days

Since we can't have a fraction of a day, we round up the decimal to the nearest whole number. So, Jim would be away from home for approximately 23 days.

turn 129/3930 into decimal

Answers

To find the decimal, all you need to do is take the number on top and divide it by the one in the bottom. 129/3930=0.03
Divide 129 by 3930 
Which is 0.03282442748
Then round it to .033

Hope I helped :)

Explain how to simplify the fraction 12 over 36

Answers

The fraction 12/36
Is quite simple first find out what can go into 12 and 36
The factors that can go into 12 and 36 is 12.
12÷12=1
36÷12=3
So the final answer will be 1/3

The fraction is, 12/36 is the fraction 12 over 36.

What is fraction?

A fraction represents a part of a whole or, more generally, any number of equal parts. When spoken in everyday English, a fraction describes how many parts of a certain size there are, for example, one-half, eight-fifths, three-quarters.

here, we have,

the fraction 12 over 36

Is quite simple first find out what can go into 12 and 36

The factors that can go into 12 and 36 is 12.

12÷12=1

36÷12=3

So the final answer will be 1/3.

To learn more on fraction click:

brainly.com/question/10354322

#SPJ2

In the seventh grade, the ratio of girls to boys is 7:5. If there are 21 girls in the seventh grade, how many boys are there?

Answers

There is 15 boys in the Seventh Grade

So we are given the fraction ratio...

7 girls

---------

5 boys

if we make the fraction

21 girls

----------

x boys

equal each other, we can cross multiply and find x.

Cross multiplying means to multiply 7 times x and 21 by 5.

then we set up a little equation

7x = (21)(5) First lets solve what 21 times 5 is 

7x = 105 Now we have to divide both sides by 7 to get x alone.

÷7 = ÷7  On the left side of the equation the 7 cancels and we solve on the right.

x = 15


So we know that when we have 21 girls in the 7th grade classroom we also have 15 boys.


Good Luck! :)

<3

A crane cable can support a maximum load of 15,000kg. If a bucket has a mass of 2,000kg and gravel has a mass of 1,500kg for every cubic meter, how many cubic meters of gravel (g) can be safely lifted by the crane?

Answers

2000 kg times 6 cubic meters equals 12000 kg plus 1500 kg equals 13500 kg. So the answer is 6 cubic meters.


Which statement is true about the graphed function?

F(x) < 0 over the intervals (-∞, -0.7) and (0.76, 2.5).
F(x) > 0 over the intervals (-∞, -0.7) and (0.76, 2.5).
F(x) < 0 over the intervals (-0.7, 0.76) and (2.5, ∞).
F(x) > 0 over the intervals (-0.7, 0.76) and (0.76, ∞).

Answers

Choice A) True. The f(x) portion is below the x axis on the interval (-infinity, -0.7) and on the interval (0.76, 2.5)

Choice B) False. This is a complete contradiction of choice A. 

Choice C) False. The portion of f(x) on the interval (-0.7, 0.76) is above the x axis.

Choice D) False. The portion of f(x) is above the x axis on the interval (-0.7,0.76); however, f(x) is below the x axis on the interval (0.76, 2.5). See choice A.

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

In summary, the final answer is choice A

Answer: A. F(x) < 0 over the intervals (-∞, -0.7) and (0.76, 2.5).

what is the area of the science lab table that is 60 by 48 inches in feet?

Answers

2880 is the area in inches and 240 is the area in feet.
Most tables are rectangular so we can use the rectangle area formula:
[tex]A = L * W[/tex]

A = 60 * 48
A = 2880

Convert inches to feet.

2880 inches = 240 feet

So, the answer is 240 square feet.

twenty less than 8 times a number is the same as 15 more than the number in equation form

Answers

8x-20=15+x

7x=35 subtract x from left side and add 20 to right side
x=5 divide

Divide. Round to the nearest tenth if necessary:
39.39 divided by 3

Answers

39.39/3 = 13.13

rounded to the nearest tenth is: 13.1

hope this helps
Or... you can use a calculator. But, I can understand if you are not allowed to use a calculator.

39.39 / 3 = 13.13

You can round that down to: 13.1

A bottle contains 240 millimeters of juice. How many litters of juice is this?

Answers

The conversion of (240mL)/1 * (10^-3L)/1mL = .24L

In general, the air temperature decreases 12 degrees Fahrenheit for every 4,000 feet increase altitude. If a hiker climbs 3,000 feet, by how much can she expect the temperature to increase?

Answers

9 degrees


because 12/4 = 3 degrees (per 1000 feet)
3 x 3 = 9 degrees total (in 3000 feet)

hope this helps

You need to rent a moving truck for a day you have identified two companies that rent trucks company a charges $45 per day plus $.10 per mile company BCharges $30 per day plus $.20 per mile for how many miles will be cost of renting be the same

Answers

45 + 0.10m = 30 + 0.20m
45 - 30 = 0.20m - 0.10m
15 = 0.10m
15/0.10 = m
150 = m.....they are the same at 150 minutes

check..
45 + 0.10(150) = 60
30 + 0.20(150) = 60
yep, it checks out,,,150 miles

what property was used to rewrite the polynomial expression (x+5)+3(a+(6x)y) to 5+(x+3a+(18x)y)

Answers

3(a+(6x)y) was clearly multiplied out as seen by the 3a and 18xy, so the distributive property was used there. In addition, the commutative and associative properties state that you can rearrange sums, so those were used too 

Is 2 pm how many degrees are in the angle between the hour and minute hand

Answers

60° - minute hand is at 90° and hour hand is at 30°. 90-30=60
Final answer:

At 2 pm, the angle between the hour hand and the minute hand of a clock is 20 degrees. The calculation takes into consideration that the hour hand advances as minutes pass within an hour.

Explanation:

The angle between the hour and the minute hand at 2 pm can be calculated in the following way. First, remember that a full circle, representing one hour on a clock, equals 360 degrees. So, each hour equals 30 degrees (360 divided by 12 hours). However, the hour hand also moves as the minutes pass. At 2 pm exactly, the minute hand is on 12, while the hour hand is at 2. But, the hour hand has also moved 1/3 of the way between 2 and 3 (since 20 minutes have passed in the hour). It is closer to 3 by 1/3 of 30 degrees which equals 10 degrees. Hence, the hour hand is at a position of 60 degrees (2 hours times 30 degrees per hour). Therefore, the angle between the two hands at 2 pm is 20 degrees.

Learn more about Angle Between Clock Hands here:

https://brainly.com/question/36923961

#SPJ12

A rectangular patio has a length of 12 1/2 feet and an area of 103 1/8 square feet. What is the width of the patio?

Answers

Area= length x width

103 1/8 = 12 1/2 x width

width = (103 1/8) ÷ (12 1/2)
width = 8.25 or 8 1/4

Answer:

The answer is b. 8 1/4 feet.

In the number 8,888.888, how does the 8 in the hundredths place compare to the 8 in the place to its left? A. The 8 in the hundredths place represents of what the 8 to its left represents. B. The 8 in the hundredths place represents of what the 8 to its left represents. C. The 8 in the hundredths place represents 100 times what the 8 to its left represents. D. The 8 in the hundredths place represents 10 times what the 8 to its left represents.

Answers

The answer is to the question is D.


Answer: The 8 in the hundredths place represents 1/10 of the 8 to its lefts response

Step-by-step explanation:

What is :
1)9.4 divided by 47
2)2.583 divided by 9
3)33.8 divided by 26
4) 37.8 divided by 18
Brain teasers answer in the comments ( I'm bored just do it )

Answers

1) 9.4 divided by 47 = 0.2

2) 2.583 divided by 9 = 0.827

3) 33.8 divided by 26 = 1.3

4) 37.8 divided by 18 = 2.1

Answer:

since u don't need the answers imma just leave this here, thnx for the points :)

Step-by-step explanation:

By what percent will a fraction change if its numerator is increased by 60% and its denominator is decreased by 20%?

Answers

N/D --> 0.8N/0.4D = 2N/D

--> 100% increase
---------------
It's 100%, = 1 time larger, 2 times as large.

Answer:

It is increased by 100%. The numerator is two times more than the denominator. That's why original fraction will become [tex]\frac{2x}{y}[/tex].        

Step-by-step explanation:

We need to find the percentage, if its numerator is increases by 60% and its denominator decreases by 20%.

First, we let the original fraction: [tex]\frac{x}{y}[/tex]

We have given its numerator is increases by 60% and denominator is decreases by 20% then,

New fraction will become = [tex]\frac{1.6x}{0.8y}[/tex].

Divide the new fraction by original fraction, then we get:

[tex]\frac{1.6x}{0.8y}[/tex]/ [tex]\frac{x}{y}[/tex]

[tex]\frac{1.6x}{0.8y}[/tex]* [tex]\frac{x}{y}[/tex]

Then, it will become [tex]\frac{1.6}{0.8}[/tex].

We can see that, The numerator is two times more than the denominator. That's why original fraction will become [tex]\frac{2x}{y}[/tex].

It is increased by 100%.

If we take an example, Suppose the original fraction is [tex]\frac{5}{8}[/tex] and the new fraction will become [tex]\frac{1.6*5}{0.8*8}[/tex].

= [tex]\frac{8}{6.4}[/tex] = [tex]\frac{80}{64}[/tex]

= [tex]\frac{10}{8}[/tex], it is twice of original fraction [tex]\frac{5}{8}[/tex].

1/3(12-24v)=-2(4v-2)

Solve the equation for 15 points PLEASE HELP!!!!!!!

Answers

Relax! This isn't so hard once you grasp it. In an equation like this, what's the first step? Distributive property, right? Multiply 1/3 by 12, then by -24 v, and apply the same process to the other side. This leaves you with 4-8v=-8v+4. Now you need to isolate that variable. You have the same variable on both sides, so you do inverse of subtraction on either one. I'm going to choose the one on the right. You add 8v to both sides, leaving you with 4-v=4. Subtract 4 from the first side, and get -v=4. You aren't solving for -v, so flip the sign, and your final answer is v=-4. Make sense? (Let me know if it doesn't--I'm always willing to walk you through it some other way. I plugged it back in, and I am 100% sure that this answer is correct.)

The length of a rectangle is 4 inches more than its width the perimeter is 96 inches what is the length and width of the rectangle

Answers

The length is 20 and the width is 16. You have to do 96/4 (for four sides) you get 24 then you have to do 24-8 (for 4 inches more than the width for two sides)
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