Answer:
602.25
Step-by-step explanation:
An airplane company is determining the difference in selling price if rows of first-class seats are added to a new design. Using the average selling price of $1,000 per first-class seat, the total selling price for one new row is
f(r) = 4,000r. Each row in first class eliminates two rows of economy seats. Using the average selling price of $150 per economy seat, the total price for each pair of removed rows is e(r) = 1,800r.
Which is d(r), the profit or loss for adding r rows of first class seats?
A. d(r) = 2,200r
B. d(r) = 5,800r
C. d(r) = –2,200r
D. d(r) = –5,800r
Step-by-step explanation:
From the original question, we can rewrite this as:
An airplane company is determining the difference in selling price if rows of first-class seats are added to a new design. The total selling price for one new row is f(r) = 4,000r. Each row in first class eliminates a pair of rows of economy seats. The total price for each pair of removed rows is e(r) = 1,800r. Which is d(r), the profit or loss for adding r rows of first class seats?
f(r) = 4000r
e(r) = 1800r
d(r) = ? (profit or loss)
Assuming we had added a row of first class seats,
+ f(r) = 4000r
But we had to remove a pair or rows from the economy seats,
- e(r) = 1800r
Translating these into one equation:
d(r) = f(r) - e(r) = 4000r - 1800r = 2200r
Therefore, OPTION A.) d(r) = 2200r
The value of d(r) will be 2200r. The correct option is A.
What is an expression?Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.
Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.
Assuming we had added a row of first-class seats,
+ f(r) = 4000r
But we had to remove a pair or rows from the economy seats,
- e(r) = 1800r
Translating these into one equation:
d(r) = f(r) - e(r) = 4000r - 1800r = 2200r
Therefore, the value of d(r) will be 2200r. The correct option is A.
To know more about an expression follow
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A bike tire just ran over a nail, and it is losing pressure at a rate of 5% every minute. The tire pressure is currently 900 kilopascals. What will it be in 7 minutes?
9514 1404 393
Answer:
629 kilopascals
Step-by-step explanation:
The tire pressure is given by the exponential function ...
p(t) = 900·0.95^t
where t is in minutes and p is in kilopascals.
p(7) = 900·0.95^7 ≈ 629 . . . . kilopascals
What is (f + g)(x)?
f(x) = -3x^2
g(x) = -5x + 4
Answer:
x=4 and y= 2/3
Step-by-step explanation:
g(x)= -5x+4
g(0)= -5(0)+4
=4
(0,4)
then you find x
1(x)= -5x+4
x= -5x+4
x+5x = 4
6x ÷ 6 =4÷6
x = 2/3 or ⅔
What’s the answer?
I want it now! Please?
Answer:
1.827
Step-by-step explanation:
6 5/8 −3 2/9 ≈
HELP ME PLEASE
Answer:
3 29/81
Step-by-step explanation:
6 5/8-3 2/9
6 45/81-3 16/81
3 29/81
Answer:
3 29/72
Step-by-step explanation:
6 5/8 − 3 2/9 = 3 29/72
Hope this helps!
(If right, pls put brainlist)
In ΔEFG, the measure of ∠G=90°, GE = 32 feet, and EF = 41 feet. Find the measure of ∠E to the nearest tenth of a degree.
Answer:
m∠E = 38.7°
Step-by-step explanation:
If you make a drawing it will help. What you have is a right triangle where you are given the adjacent side to ∠E and the hypotenuse.
The cosine of a angle = adjacent side/hypotenuse.
Therefore cos E = 32/41
arccos (32/41) = 38.7°
Answer:
The answer is 38.7
Step-by-step explanation:
Find the exact value of x.
Answer:
by using Pythagoras law
x²=30²+16²
x²=1156
x=√1156=34is the exact value of x
slope and y-intercept of the graph of 25x -20y =100
Step-by-step explanation:
First, we need to put this standard form into slope-intercept form
To do this you need to move the "y" to all by itself
-25x+25x-20y=100-25x
-20y=100-25x
y=5/4x-5
Answer:
y=5/4x-5
The slope is-5/4 and the -intercept is (0,5)
How to find the slop?
Locating the y-intercept on a graph requires knowing the value of y at x=0. This is where the graph intersects the y-axis.
25x−20y=100
20y = 100 + 25x
20y=100+25x
y = [tex]5 + \frac{5}{4}[/tex]
She concluded that the slope is [tex]\frac{5}{4}[/tex]
and the y-intercept is (0,5).
y = mx + b where m is the slope and b is the y-intercept. So, the slope is 5/4 and the y-intercept is -5.
The slope is-5/4 and the -intercept is (0,5)
Finding the value of y at x=0 will allow you to locate the y-intercept on a graph. The graph's intersection with the y-axis occurs here.To learn more about slop refer to:
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can someone help with this question please
Answer:
25sqrt(3)
Step-by-step explanation:
The answer to b would be 12 because 4sqrt(3) * sqrt(3) = 12
The area is bh/2, so take 12 * 4sqrt(3) and divide by two
Plss help me I need help I have a f
Answer:
1 1/7
Step-by-step explanation:
By the way for help on math I would reccomend Mathpapa it helps a lot!
What is the answer??? This is for geometry by the way.
Answer:
3
Step-by-step explanation:
Centroid theorem states that AX/AE = 2/3
Substitute in and XE = 3
Can someone please help me?
_Answer:
y=4x+3
Step-by-step explanation:
write an equation that is in slope-intercept form for the line that passes through the pair of points: (4, -2) and (8, -6)
Answer:
Step-by-step explanation:
4-8 -2- -6
4^2 8^2
16+64
80
8.9
help pleaseeeeeeee i will give brainlest!
Answer:
35% chance
Step-by-step explanation:
Combine the following expressions. 2√k + √k - 3√k
Answer:
The answer is zero
Step-by-step explanation:
[tex]2 \sqrt{k} + \sqrt{k} - 3 \sqrt{k} = 3 \sqrt{k} - 3 \sqrt{k} = 0[/tex]
What is the slope? ???????
Answer:
1/2
Step-by-step explanation:
HELP ME ASAP PLEASE!!!
Answer:
51
Step-by-step explanation:
5x+6=9x-30
5x=9x-36
4x=36
x= 9
5×9+6=51
Magdala is modeling 2.12÷4 how to cheeks change the place value blocks so she can make 4 equal shares
Answer and explanation:
If Magdala is trying to divide 2.12 by 4 then she would definitely need to change the place value of the dividend(2.12) and the divisor(4). In other words, both numbers need to be whole numbers.
To make 2.12 a whole number, we shift the decimal point two places to the right of the decimal point to get 212. We do same for 4 to get 400, since both numbers have to have their place values adjusted equally.
We divide 212 by 400 to get 0.53
Therefore 2.12 divided by 4= 0.53
Evaluate the expression, 7x+8(x-3). Assume that x=4.
Answer: 36
Step-by-step explanation:
(7x4) +8 (4-3)
Answer:
22
Step-by-step explanation:
If x = 4 then the equation will be
7(4) + 8(4 -3)
14 + 32 - 24
= 22
How many of these figures have at least one vertex?
Answer:
2
Step-by-step explanation:
Vertex means point where three edges meet . Two middle figures have vertices
Find the values of x and y.
Answer:
omg I absolutely love your profile picture:)
In trapezoid TRAP, the parallel bases are TP and RA
Is UV the midline of trapezoid TRAP? Why or why not?
Use the Trapezoid Midline Theorem that states the properties of
the midline of a trapezoid to justify your answer.
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Answer:
UV is not the midline. (The midline length is 4.5.)
Step-by-step explanation:
The trapezoid midline is the average of the lengths of the bases. Here, the midline length would be ...
(7 ft +2 ft)/2 = (9 ft)/2 = 4.5 ft
The line length shown is 3.5 ft, so the segment shown is not the midline.
write the product using exponents.
3x3x3(y)(y)(y)
what is the expression?
Answer:
The answer is 3x +y^3
Step-by-step explanation:
I hope this helps
Answer:
ew math yuck
Step-by-step explanation:
I’m going insane about math whoever created math I am glad is dead anyway help
Answer and Step-by-step explanation:
Since we know that this figure is a square pyramid, the base is a square. And the area of a square is its side multiplied by its side, which the sides would equal the same (since it is a square).
So, we square 625 to find One side of the square.
[tex]\sqrt{625} = 25[/tex]
We get 25 as the side.
The volume equation for a square pyramid is:
[tex]V = a^{2}( \frac{h}{3} )[/tex]
Where a is the side length of the base, and h is the height.
Plug in the values.
[tex]V = (25)^{2} (\frac{30}{3} )\\\\V = 625(10)\\\\V = 6250[/tex]
The volume of the square pyramid is 6250 cubic meters.
#teamtrees #WAP (Water And Plant)
A P E X
If each of the numbers in the following data set were multiplied by 18, what would be the new median of the data set? 14, 20, 18, 58, 71, 36
A. 504
B. 360
C. 324
D. 648
Answer:
504
step by step : 14x18=252. 20x18=360. 18x18=324. 58x18=1044. 71x18= 1278. 36x18=648. 28x18=504.
Arrange the data in an ascending order and the median is the middle value. If the number of values is an even number, the median will be the average of the two middle numbers.
504
9. Make Sense and Persevere Write and graph
exponential functions to model the number
of students at School A and at School B as a
function of number of years. In about how
many years will the number of students at both
schools be approximately the same? Explain
how you can use a graph to determine the
answer
School A
School B
240 students
decreasing at
an awal sale of 2%
180 students
increasing at
an annual rate of 3%
Answer:
school a
Step-by-step explanation:
240 students
brbdbbsguZkks
simplify (12a5 − 6a − 10a3) − (10a − 2a5 − 14a4)
Answer: 14a^5+14a^4-10a^3-16a
Step-by-step explanation: sorry if it confusing but ^3 as an example is supposed to be the mini number that goes on top of that number.
-hope this helps
Plsi I’ll give brainless
Answer:
It's below in the explanation
Explanation
1. x has to be greater than 2. So 3 and 4 both work
2. x has to be less than 22. So 21 and 20 both work
3. t has to be less than 5. So 3 and 4 both work
4. There isn't a number there. what is 5 less that?
5. j has to be less than 5 so 5 and 4 both work
6. y has to be less than 4. So 4 and 3 both work
7. B has to be greater than 26. so 26 27 and 28 all work
8.There isn't a number there
9.b can be 3 or greater than 3.
10.z can be 6 or greater than 6
Hope this Helps!
(ONLY TWO CAPITAL LETTERS) PLEASE ANSWER CORRECTLY!!!!!! WILL MARK BRIANLIEST!!!!!!!! URGENT
You go to a restaurant and order $137.61 worth of food. You decide to tip the waiter
18%. You also have to pay a tax of 6.5% on the original bill. What is the final cost of the meal?
Step by Step
Answer:
I got 2
Step-by-step explanation:
The final cost of meal is $171.35
What is unitary method?The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.
Given:
price of food = $137 . 61
Tip = 18%
tax = 6.5%
Now, price after giving tip
=137.61 x 0.18
= 24.7698
and, after tax
=137.61 x 0.065
=8.94465
Hence, final cost of meal = 137.61 + 24.7698 + 8.94465 = $171.35
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