Answer:
The answer is B. The sample was biased because the survey was only given to a select group (the males). An unbiased sample would be a large group of random people (all genders included).
Answer:
B
Step-by-step explanation:
It is wat is is my boy
I think of number, double it and add 11. I get 25 a) using the statement above, form an equation. Use the letter 'x' as a unknown number b) solve the equation
Answer:
x = 7
Step-by-step explanation:
Let
x = the unknown number
double it :
2x
add 11:
2x + 11
I get 25:
The equation is
2x + 11 = 25
2x = 25 - 12
2x = 14
Divide both sides by 2
x = 14/2
x = 7
if dy/dx = ysec^2(x) and y= 5 when x = 0, then y=?
А. e^tanx +4
B. e^tanx +5
C. 5e^tanx
D. tanx + 5
E. tanx + 5e^x
Answer:
C. [tex]\displaystyle y = 5e^{tan(x)}[/tex]
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
BracketsParenthesisExponentsMultiplicationDivisionAdditionSubtractionLeft to RightEquality Properties
Multiplication Property of EqualityDivision Property of EqualityAddition Property of EqualitySubtraction Property of EqualityAlgebra I
FunctionsFunction Notation|Absolute Values|Anything to the 0th power is 1Algebra II
Logarithms and Natural logsEuler's number eCalculus
Derivatives
Derivative Notation
Trig Derivatives
Differential Equations
Separation of variablesGeneral and particular solutionsAntiderivatives - Integration
Integration Constant C
Trig Integration
Logarithmic Integration
Step-by-step explanation:
Step 1: Define
Identify
[tex]\displaystyle \frac{dy}{dx} = ysec^2(x)[/tex]
x = 0, y = 5
Step 2: Rewrite Differential
Separation of variables
[Division Property of Equality] Isolate y terms together: [tex]\displaystyle \frac{1}{y}\frac{dy}{dx} = sec^2(x)[/tex][Multiplication Property of Equality] Isolate x terms together: [tex]\displaystyle \frac{1}{y}dy = sec^2(x)dx[/tex]Step 3: Find General Solution
[Equality Property] Integrate both sides: [tex]\displaystyle \int {\frac{1}{y}} \, dy = \int {sec^2(x)} \, dx[/tex][1st Integral] Integrate [Logarithmic Integration]: [tex]\displaystyle ln|y| = \int {sec^2(x)} \, dx[/tex][2nd Integral] Integrate [Trig Integration]: [tex]\displaystyle ln|y| = tan(x) + C[/tex][Equality Property] e both sides: [tex]\displaystyle e^{ln|y|} = e^{tan(x) + C}[/tex]Simplify: [tex]\displaystyle |y| = Ce^{tan(x)}[/tex]Rewrite: [tex]\displaystyle y = \pm Ce^{tan(x)}[/tex]Step 4: Find Particular Solution
Substitute in variables [Function]: [tex]\displaystyle |5| = Ce^{tan(0)}[/tex]Evaluate absolute value: [tex]\displaystyle 5 = Ce^{tan(0)}[/tex]Evaluate trig: [tex]\displaystyle 5 = Ce^0[/tex]Evaluate exponent: [tex]\displaystyle 5 = C(1)[/tex]Multiply: [tex]\displaystyle 5 = C[/tex]Rewrite: [tex]\displaystyle C =5[/tex]Substitute in C [General Solution]: [tex]\displaystyle y = 5e^{tan(x)}[/tex]∴ Our answer is C.
Topic: AP Calculus AB/BC (Calculus I/II)
Unit: Differential Equations
Book: College Calculus 10e
The same data are graphed in each histogram, but with different intervals. Which histogram has the best interval to draw conclusions on the height of the shortest player? A bar graph titled Height of players has height in inches on the x-axis and players on the y-axis. 4 players have a height of 60 to 69 inches and 12 players have a height of 70 to 79 inches. A bar graph titled Height of players has height in inches on the x-axis and players on the y-axis. 2 players have a height of 60 to 64, 2 have a height of 65 to 69, 7 have a height of 70 to 74, 5 have a height of 75 to 79. A bar graph titled Height of players has height in inches on the x-axis and players on the y-axis. 1 player has a height of 60 to 63, 2 have a height of 64 to 67, 3 have a height of 68 to 71, 7 have a height of 72 to 75, and 3 have a height of 76 to 79.
Answer:
c
Step-by-step explanation:
Answer:
c
Step-by-step explanation:
ФФФФ↓↓∴Ф⊄⊄∠㏒㏑↑↑↑↑⇒⇒⇒⇒Δ≅√√βΔФ∉∴∨↓∈ЛБХаЩЪ
Find the value of x.
a) 80
b) 90
c) 45
d) 60
Answer:
b
Step-by-step explanation:
The tangent- tangent angle x is half the difference of its intercepted arcs.
Th sum of the arcs in a circle = 360°
major arc = 360° - 90° = 270° , then
x = [tex]\frac{1}{2}[/tex] (270 - 90)° = [tex]\frac{1}{2}[/tex] × 180° = 90° → b
What is 3 1/4 in cups as a whole number or mixed number in simplest form?
Answer:
3/4 = 34 = 0.75.
Step-by-step explanation:
I'm very confused as to how to solve this: please help! A toy store sells two sizes of balls. If the volumes of the balls are 1,728 cm^3 and 46,656 cm^3 , how many times larger is the diameter of the second ball than the diameter of the first ball? F: 3 H: 9 G: 3.3 J: 27
Answer:
3
Step-by-step explanation:
I don't know how to explain this over a computer. Omnicalculator is very helpful.
Hope that this helps!
Twins issac and isaiah were just born issac weighs 6 pounds 2 ounces and isaiah weighs 5 pounds 4 ounces.How many ounces do issac and isaiah weigh together?
Answer: [tex]11\ \text{pounds}\ 6\ \text{ounces}[/tex]
Step-by-step explanation:
Given
Issac and Isaiah born weighing 6 pounds 2 ounces and 5 pounds and 4 ounces.
1 Pound is equivalent to 16 ounces
Issac weighs
[tex]\Rightarrow 6+\dfrac{2}{16}\ \text{Pounds}[/tex]
Isaiah weighs
[tex]\Rightarrow 5+\dfrac{4}{16}\ \text{Pounds}[/tex]
Their combined weight is
[tex]\Rightarrow 6+5+\dfrac{2}{16}+\dfrac{4}{16}\\\\\Rightarrow 11+\dfrac{6}{16}\ or\\\\\Rightarrow 11\ \text{pounds}\ 6\ \text{ounces}[/tex]
Please help, will give brainliest
Tom wants to order tickets online so that he and three of his friends can go to a waterpark. The cost of the tickets is $16.00 per person. There is also a $2.50 one-time service fee for ordering the tickets online. Write an expression in terms of n that represents the cost for ordering n tickets online.
Answer:
(16*n)+2.5=c
Step-by-step explanation:
c=cost
n=amount of friends.
Have a great weekend!! :)
I need help with this question Please help ME!
Answer:
Function: y = x - 6
input output
1 -5
2 -4
3 -3
4 -1
If Ted reads 8 books in 4 months, how many books does Ted read in 1 month?
What is 3/5 • 6/5??
Answer:
0.72
Step-by-step explanation:
3/5 X 6/5 = 0.72
Kayla has 5 2/3 tablespoons of sugar
in a bowl. She is sprinkling 1/3
tablespoon of sugar on top of each
cupcake she is baking. How many
cupcakes can she sprinkle with the
sugar that is in the bowl?
please someone help this is my sisters problem that shes been stuck on and its middle school work so if anyone could help it would mean a lot! NO LINKS OR FILES OR I WILL REPORT
Answer:
the answer is 22
Step-by-step explanation:
77/3.5=22
What is the slope of the line that passes through the points
(
−
8
,
−
3
)
(−8,−3) and
(
−
24
,
1
)
?
(−24,1)
Answer:
-0.25x-5
Step-by-step explanation:
Ellen is filling the pool shown in the figure for her little brother. She can carry 2
5
8 gallons of water each trip. Write and solve an equation to find how many trips she needs to make.
Answer:
the answer is 6 trips.
Step-by-step explanation:
A roller coaster can accommodate 18 riders in 8 minutes. Complete the table with equivalent ratios.
Answer:
36 riders in 16 minutes, 54 riders in 24 minutes, and 72 riders in 32 minutes.
Step-by-step explanation:
The roller coaster can accommodate 9 riders every 4 minutes. 36 riders in 16 minutes, 54 riders in 24 minutes, and 72 riders in 32 minutes all follow the common ratio.
Helpppppppp plz!!!!!!!!!
Please help!!! T^T
Sarah buys 2 gallons of milk. There are approximately 3.875 liters in a gallon. How many milliliters of milk did Sarah buy?
Hello, I hope this helps!
Answer:
3.875 * 2
= 7,570.82 ml
Sarah bought 7,570 ml of milk
Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.
Find the length of the missing side. The triangle is not drawn to scale.
17
15
Answer: 8
Step-by-step explanation:
Pythagorean theorem - a^2+b^2=c^2
a^2+15^2=17^2
a^2+225=289
(subtract 225 from both sides)
a^2=64
(sq root both sides)
a=8
I REALLY NEED HELP RIGHT NOW! THE CORRECT ANSWER GETS BRAINLIEST!! PLZZZZZ!!!
Answer:
D
Step-by-step explanation:
since this feels like a sequence, a1 should be the first Expression to the arimethic sequence and the rest should be the (n - 1)d so I think it should be 1/2 + 4(an - 1)
note: arimethic sequence formula is a + (n - 1)d
Anyone know this answer?
Answer:
For number 1 the answer should be independent.
For number 2 the answer should be independent
And number 3 should also be independent
Step-by-step explanation:
My explanation is that they are all independent because you aren't depending on someone to help you do these things, therefore, independent.
I hope this helps :)
The volume of two similar solids are 128 m3
and 250 m². The surface area of the larger
solid is 250 m². What is the surface are of the
smaller solid?
Answer:
Solution given:
The volume of two similar solids are 128 m³
and 250 m³.
surface area of larger solid is 250m²
let surface area of smaller solid be x.
Since they are similar
[tex] \frac{250}{128} = \frac{250}{x} [/tex]
x=128
the surface are of the
smaller solid is 128m²
PLEASE HELP WILL MARK BRAINLIST
Which of the following correctly gives the center and radius of the circle defined by (2 -
- 7) + (y - 2)2 = 10?
O Center: (7, 2); Radius = 100
O Center: (7, 2); Radius - V10
O Center:(-7, - 2); Radius = 100
O Center:(-7, -2); Radius = 10
Answer:
Center = (7, 2); Radius = [tex]\sqrt{10}[/tex]
Step-by-step explanation:
(x - 7)^2 + (y - 2)^2 = 10
center = (7, 2)
Radius = [tex]\sqrt{10}[/tex]
Answer:
(x - 7)^2 + (y - 2)^2 = 10
center = (7, 2)
Radius = √10
Answer to this question plz
[tex]24 + - 4 \sqrt{2} + 6 \sqrt{2} - 2[/tex]
[tex]22 + 2 \sqrt{2} [/tex]
so 22+2=24
that means the b=22
and c=2
Pleaseeee help #10 Which table below describes a linear function?
7 points
y
o
o
o
O
A
1
1
1
2
4
16
4
8
9
81
9
18
у
y
0
0
0
B
1
3
D
1
2
W
4
9
4
4
9
20
9
Ο Α
OB
Ос
Oo
Answer:a
Step-by-step explanation:
Estimate 16.82-8.264 by first rounding each number to the nearest tenth.
pls help i need the right answer!
Answer:
about 8.40
Step-by-step explanation:
16.82-8.264
Rounding 16.82
look at the hundredths place and determine if it is greater than or equal to 5. If so round up. If not, leave it the same. Since 2 is not greater than or equal to, we can estimate 16.80.rounding 8.264
6 is above 5, so we can round 2 to 3. making 8.364.estimate 8.4016.80-8.40=8.40
Angles: Arcs & Angles need help thank you!!
Answer:
See answers below
Step-by-step explanation:
1) The typr of triangle in a semicircle is a right angle. Hence the measure of m<ABC is 90degrees
2) m<DEF = 1/2(144)
m<DEF = 144/2
m<DEF = 72degrees
3) From the trinagle
4x+3 + x+7 +90 ==180
5x + 100 = 180
5x = 180-100
5x = 80
x = 80/5
x = 16
<QRD = x+7
m<QRD = 16 + 7
m<QRD = 23degrees
4) Angle in the same segment are equal
5x-37= 3x+1
5x - 3x = 1+37
2x = 38
x = 38/2
x =19
arc NM = 2m<P
arc NM = 2(3x+1)
arc NM = 2(3(19)+1)
arc NM = 2(58)
arcNM = 116degrees
True or False: The range of a logarithmic function is always all real numbers.
Answer: true!
Step-by-step explanation: i do not know but true!
30 POINTS!!!!
HELP PLEASE!!!
Answer:
Step-by-step explanation:
Answer:
First Position: √22
Second Position: √19
Third Position: √21
Fourth Position: √18
the rational number 3/8 is equivalent to
Answer:
Step-by-step explanation:
rational number equivalent to 3/8 is 6/16
3*2/8*2=6/16
Multiplying both numerator and denominator with same number