Can somebody help me answer this mathematics question? I'm in precalculus, and this is the last homework question, but I am stumped. I tried asking on Quora, but I got an unclear answer and one that accused me of cheating because I asked. I could not understand the teacher's or the book's explanation on how to solve this problem.
"The cost of sending mail is $0.37 for a letter weighing less than 1 ounce, $0.60 for a letter weighing at least one ounce, but less than 2 ounces, and $0.83 for a letter weighing at least 2 ounces, but less than 3 ounces."
Write a function c(x) that gives the cost of mailing a letter weighing x ounces.
Answers
Answer:
Step-by-step explanation:
this is a piecewise function
in this context, to find the cost of any package weight x you figure out which piece of the function it fits in.
examples:
x = .5
c(x) = 0.37 (because x is less than 1)
x = 1
c(x) = 0.60 (because x is equal to 1 but still less than 2)
x = 2.9
c(x) = 0.83 (because x is more than 2 but less than 3)
Related Questions
what are 1 step equations
Answers
Answer:
A one-step equation is an algebraic equation you can solve in only one step. You've solved the equation when you get the variable by itself, with no numbers in front of it, on one side of the equal sign.
Step-by-step explanation:
:D
A. Last night, 8.2 x 105 fans
attended a concert, and each
fan recorded an average of
600 seconds of the concert on
their phones. What is the total
number of seconds recorded
from all of the fans at the
concert?
Answers
Step-by-step explanation:
8.2 x 105 = 861
861 x 600 = 516,600
Answer: 516,600
How many 2/3 size pieces in 4 whole
Answers
Answer:
64 cm2
Step-by-step explanation:
Answer:
6 pieces
Step-by-step explanation:
Number of pieces = 4 ÷ (2/3)
[tex]= 4 *\frac{3}{2}\\\\= 2 * 3\\ = 6[/tex]
If rectangle ABCD was reflected over the Y axis reflected over the X axis and rotated 180° where would point A
lie
Answers
Answer:
The answer is (-4,1)
Step-by-step explanation:
Answer:
(-4,1)
Step-by-step explanation:
plz help ill mark you brainliest
Answers
Answer:
cos 30= 0.1542
tan 48= 1.2001
sin 79= -0.4441
plz mark brainliest
Four times a number added to six equal 26
Answers
Answer:
x=5
Explanation:
4x + 6 =26
4x = 20
x = 5
Answer:
x = 5
Step-by-step explanation:
Equation: 4x + 6 = 26
Subtract 6 from both sides: 4x = 20
Divide each side by 4: x = 5
I hope this helped, please mark Brainliest, thank you !!
Elena biked 8 miles on Saturday. Use the double number line to answer the questions. Be prepared to explain your reasoning. A) What is 100% of her Saturday distance? B) On Sunday, she biked 75% of her Saturday distance. How far was that? C) On Monday, she biked 125% of her Saturday distance. How far was that?
Answers
Answer:
A - Since Elena biked for 8 miles on Saturday, 100% of her distance traveled was 8 miles.
B - Now, on Sunday she traveled 75% of what she traveled on Saturday, which arises from the following calculation:
8 x 0.75 = X
6 = X
So on Sunday she traveled 6 miles.
C - Finally, on Monday she traveled 125% of what she traveled on Saturday, which arises from the following calculation:
8 x 1.25 = X
10 = X
So on Monday she traveled 10 miles.
Answer:
I agree with the one above me
Step-by-step explanation:
Halla las dimensiones de un rectángulo de 48 cm2 de área sabiendo que es 2 cm
más ancho que alto
Answers
Answer:Alto 16cm Ancho 32cm
A+2A=48
3A=48
/3
A=16
Step-by-step explanation:
PLEASE HELP. ITS ALGEBRA
Answers
Answer: the y intercept is 330. the rate of change is -55. the domain is infinity since it is linear i'm pretty sure
Step-by-step explanation:
Want to help me thanks if not ok to
will give brainliest
Answers
Answer:
The answer is 18.2
Step-by-step explanation:
17+24+19+17+14=91
91/5=18.2
X - 15 = 18
What is the value of x?
Answers
Answer:
x=33
Step-by-step explanation
2 step equation
add 15 to 18 because there's a minus in front of the 15
15+18=33
Answer:
X = 33
Step-by-step explanation:
bc 33 subtracted by 15 is 18
If a windmill with radius 26 feet makes 12 full revolutions every 1 minute, what is its linear speed?
Answers
The linear speed of the windmill is 1,960.35 feet per minute.
Given data:
To calculate the linear speed of the windmill, determine the distance traveled by a point on the circumference of the windmill in 1 minute.
The circumference of a circle can be calculated using the formula:
Circumference = 2 * π * radius
Given that the radius of the windmill is 26 feet, the circumference is:
Circumference = 2 * π * 26
Now, the windmill makes 12 full revolutions every 1 minute. Since one revolution is equivalent to one circumference, the total distance traveled in 1 minute is:
Distance = 12 * Circumference
Substituting the value of the circumference:
Distance = 12 * (2 * π * 26)
Simplifying this expression:
Distance = 24 * π * 26
Therefore, the linear speed of the windmill is equal to the distance traveled divided by the time taken, which is 1 minute:
Linear speed = Distance / Time
Linear speed = 24 * π * 26 / 1
Calculating this value, the linear speed of the windmill:
Linear speed ≈ 1,960.35 feet per minute
Hence, the linear speed is 1,960.35 feet per minute.
To learn more about speed, refer:
https://brainly.com/question/19930939
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The chances of winning the Maryland lottery are one chance in twenty-two million. The probability would be considered an example of:_______
Answers
Answer:
Descriptive statistics
Step-by-step explanation:
The chances of winning the Maryland lottery are one chance in twenty-two million. The probability would be considered an example of Descriptive statistics
Descriptive statistics is referred to as the process of using a descriptive statistic. A descriptive statistic contains the quantitative summary from a sample data or information.The chances of winning the Maryland lottery are one chance in twenty-two million is an example.
Miriam pays a service to deliver the chair to her house. Her bill is $24.75, and she tips the driver 20% of the cost of delivery. What is the total expense for the delivery?
Answers
Answer:
29.7
Step-by-step explanation:
Plz help me i’ve been stuck on this one for a while
Answers
Answer:
the 2nd one
Step-by-step explanation:
Answer:
9/12 and 10/12
Step-by-step explanation:
LCM of 4 and 6 = 12Alter the numerators to fit the denominators as shown in steps 3 and 43 × 3 = 95 × 2 = 12Re-write the expression: 9/12 + 10/12I hope this helps!
Find the equation of the circle with radius 3 and center (6,-2)
Answers
Answer:
(x - 6)² + (y + 2)² = 9
General Formulas and Concepts:
Pre-Calculus
Equation of a Circle: (x - h)² + (y - k)² = r²
(h, k) is the centerr is the radiusStep-by-step explanation:
Step 1: Define
Center (6, -2)
Radius r = 3
Step 2: Write equation
Substitute: (x - 6)² + (y + 2)² = 3²Evaluate: (x - 6)² + (y + 2)² = 9What is -2+(-4) I need help with it because id not understnad how to add integers
Answers
Answer:
-6
Step-by-step explanation:
2+4=6
turn the numbers into negatives
-2+-4=-6
Which statements involving cosine and sine are true? Check all that apply.
sin(–45°) = –sin(45°)
sin(–45°) = sin(45°)
cos(–45°) = –cos(45°)
cos(–45°) = cos(45°)
cos(–45°) = sin(–45°)
Answers
Answer:
sin(–45°) = –sin(45°)
cos(–45°) = cos(45°)
Step-by-step explanation:
The statements which involving cosine and sine are true are sin(–45°) = –sin(45°) and cos(–45°) = cos(45°).
What are Trigonometric Ratios?Trigonometric ratios are the ratios which is described for two sides of a right angled triangle.
The main three trigonometric ratios are sine, cosine and tangent functions.
Trigonometric functions are also called as Circular functions.
There are five statements given.
We have the identities that,
sin (-x) = - sin(x) and
cos (-x) = cos x
Using this for each of the statement,
sin(–45°) = –sin(45°) is true.
sin(–45°) = sin(45°) is false
cos(–45°) = –cos(45°) is false
cos(–45°) = cos(45°) is true
For the last one,
cos(–45°) = cos (45°) = sin (45°) ≠ sin(–45°)
So this is false.
Hence the true statements are sin(–45°) = –sin(45°) and cos(–45°) = cos(45°).
Learn more about Trigonometric Ratios here :
https://brainly.com/question/14746686
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(+8) + (-2)
I need to understand this
Answers
Answer:
6
Step-by-step explanation:
(+8) + (-2): Okay so for this question you can just cancel the + in the middle and just do 8-2 which gives you 6, however this doesnt work for all questions so be careful
Bill drove 406 miles in 7 hours. What was the average speed per hour? WILL GET BRAINLIEST!!!!!
Answers
Answer:
58 miles per hour
Step-by-step explanation:
Divide 406 by 7
Encuentra la forma de la ecuacion de la recta que pasa por el punto P(-1,5) y que es perpendicular a la recta 2x + 3y - 8= 0
Answers
Responder:
2y-3x = 12
Explicación paso a paso:
La forma estándar de ecuación de una línea se expresa como;
y = mx + c
m es la pendiente
c es la intersección
Primero necesitamos la pendiente de la ecuación conocida;
Dada la ecuación 2x + 3y - 8 = 0
Vuelva a escribir en forma estándar;
2x + 3y = 8
3y = -2x + 8
y = -2x / 3 + 8/3
Por lo tanto, la pendiente de la línea dada es -2/3
Dado que la línea desconocida es perpendicular a la línea dada, el producto de sus pendientes será -1;
mM = -1
M = -1 (-2/3)
M = 3/2
La pendiente de la línea desconocida es 3/2
Obtener la intersección:
Sustituya m = 3/2 y el punto (-1, 5) en la expresión y = mx + cy obtenga c como se muestra;
5 = 3/2 (-1) + c
5 = -3/2 + c
c = 5 + 3/2
c = (10 + 3) / 2
c = 13/2
Obtenga la ecuación requerida;
Dado que y = mx + c
y = 3x / 2 + 13/2
multiplicar por 2;
2y = 3x + 12
2y-3x = 12
De ahí que la forma de la ecuación de la recta que pasa por el punto P (-1,5) y que es perpendicular a la recta 2x + 3y - 8 = 0 es 2y-3x = 12
Answer:
The answer is A, C, E
Step-by-step explanation:
I took the test
17. 1,000 X n = 630
n =
Answers
Answer:
0.63 or 63/100
Step-by-step explanation:
Answer:
0.63
Step-by-step explanation:
For this you would want to do the reverse operation. So you see that it is multiplication? You would have to do division to get n by itself. When you divide 630 by 1,000 you would get 0.63.
Please Help
Starr drives 495 miles in 9 hours. How many miles does Starr drive in 15 hours? 825 miles 975 miles 1,040 miles 1,375 miles
Answers
Answer:
825 miles
Step-by-step explanation:
Divide starting number by nine to get 55. Then multiply 55 by 15 to get 825 miles
Answer:
A 825
Step-by-step explanation:
PLSSS ANSWER I DONT HAVE LOTS OF TIMEEE!!?!?!?!?!?!??!??!??! Three families took a vacation to Phoenix. The Abbott Family spent $840 on four nights at their hotel and three airline tickets. The Baker Family spent $1,130 on nine nights at their hotel and two airline tickets. The Carson Family spent $2,080 on six nights at their hotel and five airline tickets. Two of the families paid the same price per night at their hotel and per airline ticket.
Which two families would have had to pay the same price per night at their hotel and per airline ticket to have the largest possible nightly hotel cost?
A.
the Abbott and Baker Families
B.
the Abbott and Carson Families
C.
the Carson and Baker Families
D.
all three families would have to pay the same price
Answers
Answer:
c
Step-by-step explanation:
both of the familys have higher cost and have to stay longer
Rewrite the expression x^(-7/8) in radical form.
Answers
Answer:
1 / 8√ x^(7)
Tell me if you need the step by step process.
Diego is 165 cm tall andre is 1.7m tall how many centimeters tall is andre
Answers
Answer:
he is 170cm tall
Step-by-step explanation:
Answer:
Andre is 170 cm tall.
Step-by-step explanation:
There are 100 centimeters in a meter. To find the answer, we would multiply 1.7 by 100 to convert it to centimeters.
1.7 × 100 = 170
or
1.7 × 10² = 170
Point A is located in which quadrant? On a coordinate plane, point A is at (negative 3, 5). Quadrant I Quadrant II Quadrant III Quadrant IV
Answers
Answer:
quadrant 2
Step-by-step explanation:
HEYYYYYYYYYYY I NEED HELPPPPPP WILL GIVE BRAINLIST
Answers
Answer:
1/3
Step-by-step explanation:
There are six triangles
2/6 of them are green
We can simplify this to 1/3
Answer:
1/6
Step-by-step explanation:
help me asap lol
geometry class
Answers
Answer:
x is 35° more degrees than z
How many millimetres are there in 3
cm
Answers
Answer:
30 millimeters
Step-by-step explanation:
Every centimeter is 10 millimeters so 30 millimeters=3cm.
Hope this helps ;D