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Math Problems
Precalculus
Reflections of functions
Identify the part of the circle given the equation.
\newline
8
8
8
.
(
x
−
2
)
2
+
(
y
+
13
)
2
=
150
(x-2)^{2}+(y+13)^{2}=150
(
x
−
2
)
2
+
(
y
+
13
)
2
=
150
\newline
Center : (
2
2
2
\newline
−
13
-13
−
13
\newline
radius :
□
\square
□
\newline
□
\square
□
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ABRAR AHMED (Presenting)
\newline
Electromagnetic Waves
\newline
The electromagnetic spectrum is arranged in a specific order based on the wavelengths or frequencies
\newline
The main groupings the continuous electromagnetic (EM) spectrum are:
\newline
Radio waves
\newline
Microwaves
\newline
Infrared
\newline
Visible (red, orange, yellow, green, blue, indigo, violet)
\newline
Ultraviolet
\newline
This order is shown in the diag am below from longest wavelength (lowest frequency) to shortest wavelength (highest frequency)
\newline
X-rays
\newline
Gamma rays
\newline
ABRAR AHMED
\newline
Ismail Alam
\newline
Edufast Academy
\newline
Edufast Academy
\newline
7
7
7
:
26
26
26
PM | iwu-uvyc-vvj
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ABRAR AHMED (Presenting)
\newline
Electromagnetic Waves
\newline
- The electromagnetic spectrum is arranged in a specific order based on the wavelengths or frequencies
\newline
- The main groupings the continuous electromagnetic (EM) spectrum are:
\newline
- Radio waves
\newline
- Microwaves
\newline
- Infrared
\newline
- Visible (red, orange, yellow, green, blue, indigo, violet)
\newline
- Ultraviolet
\newline
✓
\checkmark
✓
\newline
- This order is shown in the diag am below from longest wavelength (lowest frequency) to shortest wavelength (highest frequenc
\newline
ABRAR AHMED
\newline
Ismail Alam
\newline
Edufast Academy
\newline
Edufast Academy
\newline
7
7
7
:
26
26
26
PM | iwu-uvyc-vvj
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10
10
10
. What is the value of
K
m
K_{m}
K
m
i.e the Fourth Moment Coefficient of Kurtosis for normal distribution
\newline
A.
K
m
=
0.236
K_{m}=0.236
K
m
=
0.236
\newline
B.
K
m
=
3
K_{m}=3
K
m
=
3
\newline
C.
K
m
=
0.263
K_{m}=0.263
K
m
=
0.263
\newline
D.
K
m
=
−
3
K_{m}=-3
K
m
=
−
3
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Studysy
\newline
The Leader i...
\newline
The Leader il..
\newline
cos single s...
\newline
definition of...
\newline
Zearn
\newline
MATH
8
8
8
: Per...
\newline
files-cdn.sc..
\newline
M
2
2
2
|L
8
8
8
\newline
Similar Triangles
\newline
Sign out
\newline
Are the two triangles below similar?
\newline
What is the scale factor for each pair of sides?
\newline
\begin{tabular}{|c|c|c|}
\newline
\hline Side in triangle
A
B
C
A B C
A
BC
& Side in triangle
D
E
F
D E F
D
EF
& Scale factor \\
\newline
\hline Side
A
B
A B
A
B
is
4
4
4
units & Side
D
E
D E
D
E
is
8
8
8
units &
2
2
2
.
4
4
4
\\
\newline
\hline Side
B
C
B C
BC
is
5
5
5
units & Side
E
F
E F
EF
is
10
10
10
units &
□
\square
□
\\
\newline
\hline Side
A
C
A C
A
C
is
3
3
3
units & Side
D
F
D F
D
F
is
6
6
6
units &
□
\square
□
\\
\newline
\hline
\newline
\end{tabular}
\newline
Enter
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In the figure below,
B
D
‾
\overline{B D}
B
D
and
A
C
‾
\overline{A C}
A
C
are diameters of circle
P
P
P
.
\newline
What is the are measure of minor arc \overparen{D C} in degrees?
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Human Impact PSA Project.doc
\newline
Assignment name: Unit
3
3
3
Learnit
\newline
https://apclassroom.collegeboard.org/
114
114
114
/assessments/assignments/
57312614
57312614
57312614
\newline
Q
\newline
A
\newline
(
1
1
1
)
\newline
母CollegeBoard
\newline
Pre-AP
\newline
Unit
3
3
3
Learning Checkpoint
2
2
2
\newline
2
2
2
\newline
3
3
3
\newline
4
4
4
\newline
(
5
5
5
)
\newline
(
6
6
6
)
\newline
(
7
7
7
)
\newline
(
8
8
8
)
\newline
(
9
9
9
)
\newline
(
10
10
10
)
\newline
(
11
11
11
)
\newline
The circle with center
A
A
A
and radius
A
B
‾
\overline{A B}
A
B
is shown in the
x
y
x y
x
y
plane. The circle has equation
(
x
−
3
)
2
+
(
y
−
3
)
2
=
13
(x-3)^{2}+(y-3)^{2}=13
(
x
−
3
)
2
+
(
y
−
3
)
2
=
13
. Which of the following is the equation of the tang the circle at point
B
B
B
?
\newline
(A)
y
=
2
3
x
+
16
3
y=\frac{2}{3} x+\frac{16}{3}
y
=
3
2
x
+
3
16
\newline
(B)
y
=
2
3
x
+
5
y=\frac{2}{3} x+5
y
=
3
2
x
+
5
\newline
(c)
y
=
3
2
x
+
9
2
y=\frac{3}{2} x+\frac{9}{2}
y
=
2
3
x
+
2
9
\newline
(D)
y
=
−
3
2
x
+
π
2
y=-\frac{3}{2} x+\frac{\pi}{2}
y
=
−
2
3
x
+
2
π
\newline
9
9
9
sep soo
\newline
Search
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编辑内容 WD PDF 转 Word
\newline
! 页面管理
\newline
插入书签
\newline
批注管理
\newline
Co 翻页设置
\newline
阅读背景
\newline
朗读
\newline
缩略图
\newline
85
85
85
折
\newline
Fabrizzio went shopping on Tuesday and decided to purchase a pair of pants that is
15
%
15 \%
15%
off the regular price. If he waits and buys the pants on Wednesday, he will receive an additional
5
%
5 \%
5%
off. What percent would Wednesday's sale price be of the original price for the pants? Round to the nearest whole percent.
\newline
Choose
1
1
1
answer:
\newline
(A)
81
%
81 \%
81%
\newline
(B)
85
%
85 \%
85%
\newline
(C)
95
%
95 \%
95%
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ermine relative extrema algcbraically.
\newline
udent/PlayerTest. aspxquizme
=
18
=18
=
18
chapterld
=
88
=88
=
88
sectionild
=
28
=28
=
28
bjectiveld
=
48
=48
=
48
studyPlanAssignmentid
=
24379978
=24379978
=
24379978
viewMode
=
08
c
=08 \mathrm{c}
=
08
c
...
\newline
William Artiaga
04
04
04
/
18
18
18
/
24
24
24
12
12
12
:
35
35
35
AM
\newline
−
2
-2
−
2
−
4
-4
−
4
Determine
\newline
This quiz:
5
5
5
point(s)
\newline
possible ebraically.
\newline
Question
3
3
3
of
5
5
5
\newline
This question:
1
1
1
\newline
point(S) possible
\newline
Resume later
\newline
Submit quiz
\newline
Find the
x
x
x
-values of all points where the function has any relative extrema. Find the value(s) of any relative extrema.
\newline
f
(
x
)
=
5
+
(
4
+
3
x
)
2
/
3
f(x)=5+(4+3 x)^{2 / 3}
f
(
x
)
=
5
+
(
4
+
3
x
)
2/3
\newline
A. There are no relative minima. The function has a relative maximum of
□
\square
□
at
x
=
x=
x
=
□
\square
□
T.
\newline
(Use a comma to separate answers as needed.)
\newline
B. There are no relative maxima. The function has a relative minimum of
□
\square
□
at
=
88
=88
=
88
1
1
1
□
\square
□
.
\newline
(Use a comma to separate answers as needed.)
\newline
c. The function has a relative maximum of
□
\square
□
at
x
=
x=
x
=
□
\square
□
and a relative minimum of
□
\square
□
att
x
=
x=
x
=
□
\square
□
.
\newline
(Use a comma to separate answers as needed.)
\newline
D. There are no relative extrema.
\newline
Next
\newline
esk
1
1
1
Get tutor help
5
5
5
point
\newline
The image of point
P
(
2
,
3
)
\mathrm{P}(2,3)
P
(
2
,
3
)
if reflected as far as
y
=
3
\mathrm{y}=3
y
=
3
will be...
\newline
A.
P
′
(
2
,
3
)
\mathrm{P}^{\prime}(2,3)
P
′
(
2
,
3
)
\newline
B.
P
′
(
2
,
2
)
\mathrm{P}^{\prime}(2,2)
P
′
(
2
,
2
)
\newline
C.
P
′
(
2
,
5
)
\mathrm{P}^{\prime}(2,5)
P
′
(
2
,
5
)
\newline
D.
P
′
(
2
,
4
)
\mathrm{P}^{\prime}(2,4)
P
′
(
2
,
4
)
\newline
A
\newline
B
\newline
C
\newline
D
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A sample collected from cave paintings on an archeological site in France shows that only
2
%
2 \%
2%
of the carbon
−
14
-14
−
14
still remains. How old is the sample? Round to the nearest year.
\newline
Use the model for radiocarbon dating:
Q
(
t
)
=
Q
0
e
−
0.000121
t
Q(t)=Q_{0} e^{-0.000121 t}
Q
(
t
)
=
Q
0
e
−
0.000121
t
where
Q
0
Q_{0}
Q
0
is the original quantity of carbon
−
14
-14
−
14
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\begin{tabular}{c|c|c}
\newline
\hline Questions & Time & SmartScore \\
\newline
\hline
18
18
18
&
03
:
28
03: 28
03
:
28
&
25
25
25
\\
\newline
\hline
\newline
\end{tabular}
\newline
Video
\newline
Graph the image of
L
(
−
1
,
3
)
L(-1,3)
L
(
−
1
,
3
)
after a reflection over the
y
y
y
-axis.
\newline
Submit
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The Bohr model can also be used to predict an approximate radius for an atom. The equation for the radius
r
r
r
of the hydrogen atom is:
\newline
r
=
h
2
k
π
m
e
2
r=\frac{h^{2}k}{\pi me^{2}}
r
=
πm
e
2
h
2
k
\newline
where
\newline
m
=
" mass of electron "
m=\text{" mass of electron "}
m
=
"
mass of electron
"
\newline
A student suggests that, for a speed of
1.4
×
1
0
7
ms
−
1
1.4 \times10^{7}\,\text{ms}^{-1}
1.4
×
1
0
7
ms
−
1
, neutrons would have a wavelength similar to the radius of a hydrogen atom.
\newline
Determine whether the student is correct.
\newline
" mass of neutron "
=
1.67
×
1
0
−
27
kg
\text{" mass of neutron "}=1.67 \times10^{-27}\,\text{kg}
"
mass of neutron
"
=
1.67
×
1
0
−
27
kg
Get tutor help
Which of the following radian measures is equal to
1
,
08
0
∘
1,080^{\circ}
1
,
08
0
∘
?
\newline
(The number of degrees of arc in a circle is
360
360
360
. The number of radians of arc in a circle is
2
π
2 \pi
2
π
.)
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(nif: Tronsformations
\newline
Name
\newline
Date
\newline
Pd
\newline
SCALE FACTOR AND DILATIONS
\newline
Draw a line from the arrow on card
A
A
A
to its solution in the top corner of a card in column \#
2
2
2
. Continue to draw lines showing the path from each card to its solution in the opposite column until you end back at the solution on card
A
A
A
.
\newline
COLUMN \#
1
1
1
\newline
A in the dilation below.
\newline
in the dilation below.
\newline
7
c
m
7 \mathrm{~cm}
7
cm
\newline
I
\newline
G
′
G^{\prime}
G
′
\newline
G in the dilation below.
\newline
COLUMN \#
2
2
2
\newline
The figure will be dilated by a scale factor of
1
1
1
.
2
2
2
. Find the new length.
40
40
40
x
\newline
48
48
48
\newline
1
1
1
.
5
5
5
\newline
The figure will be dilated by
a
D
a D
a
D
\newline
scale factor of
3
3
3
.
5
5
5
. Find the new measure of the base.
\newline
The figure will be dilated by a scale factor of
0
0
0
.
2
2
2
. Find the new width.
\newline
0
0
0
.
8
8
8
\newline
The figure will be dilated by
H
\mathrm{H}
H
scale factor of
5
5
5
. Find the new height.
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What is the a-value (or
y
y
y
-intercept) for the function:
f
(
x
)
=
800
(
0.85
)
x
f(x)=800(0.85)^{x}
f
(
x
)
=
800
(
0.85
)
x
?
\newline
800
800
800
\newline
0
0
0
.
15
15
15
\newline
x
x
x
\newline
0
0
0
.
85
85
85
Get tutor help
Q
9
9
9
\newline
Circle
T
\mathrm{T}
T
passes through the origin and the point
U
(
3
,
−
4
)
U(3,-4)
U
(
3
,
−
4
)
. What is the circumference of Circle T?
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3
3
3
. Find the area in the interior of
r
=
1
−
sin
θ
r=1-\sin \theta
r
=
1
−
sin
θ
above the polar axis. Use your calculator to integrate.
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Find the
x
x
x
-intercept and the
y
y
y
-intercept for the graph of the following equation.
\newline
6
x
−
5
y
=
0
6x-5y=0
6
x
−
5
y
=
0
Get tutor help
An isosceles triangle has congruent sides of
20
cm
20\text{cm}
20
cm
. The base is
10
cm
10\text{cm}
10
cm
. What is the area of the triangle?
\newline
A
=
81
cm
2
A=81\text{cm}^2
A
=
81
cm
2
\newline
a
=
9
a=9
a
=
9
Get tutor help
Uso the graph to answer the question.
\newline
What is the equation of the circle?
\newline
A.
\newline
(
x
+
3
)
2
+
(
y
−
2
)
2
=
8
(x+3)^{2}+(y-2)^{2}=8
(
x
+
3
)
2
+
(
y
−
2
)
2
=
8
\newline
C.
\newline
(
x
+
3
)
2
+
(
y
−
2
)
2
=
16
(x+3)^{2}+(y-2)^{2}=16
(
x
+
3
)
2
+
(
y
−
2
)
2
=
16
\newline
8
8
8
.
\newline
(
x
−
3
)
2
+
(
y
+
2
)
2
=
8
(x-3)^{2}+(y+2)^{2}=8
(
x
−
3
)
2
+
(
y
+
2
)
2
=
8
\newline
D.
\newline
(
x
−
3
)
2
+
(
y
+
2
)
2
=
16
(x-3)^{2}+(y+2)^{2}=16
(
x
−
3
)
2
+
(
y
+
2
)
2
=
16
Get tutor help
The amount of simple interest is calculated by which of the following formulas?
\newline
a
.
Interest
=
P
⋅
r
⋅
t
a. \quad \text{Interest} = P \cdot r \cdot t
a
.
Interest
=
P
⋅
r
⋅
t
\newline
b
.
Interest
=
(
r
n
+
1
)
t
b. \quad \text{Interest} = (\frac{r}{n}+1)^{t}
b
.
Interest
=
(
n
r
+
1
)
t
\newline
c
.
Interest
=
(
1
+
r
n
)
n
t
c. \quad \text{Interest} = (1+\frac{r}{n})^{nt}
c
.
Interest
=
(
1
+
n
r
)
n
t
\newline
d
.
Interest
=
(
1
+
r
n
)
n
t
d. \text{Interest} = (1+\frac{r}{n})^{nt}
d
.
Interest
=
(
1
+
n
r
)
n
t
\newline
e
.
Interest
=
P
⋅
r
⋅
t
e. \text{Interest} = P \cdot r \cdot t
e
.
Interest
=
P
⋅
r
⋅
t
\newline
Get tutor help
acid and salt as well as the equilibrium constant
(
K
a
)
\left(\mathrm{K}_{\mathrm{a}}\right)
(
K
a
)
of the acid.
\newline
Pre-Lab Questions:
\newline
A
0.65
M
0.65 \mathrm{M}
0.65
M
solution of ammonium chloride has a
p
H
\mathrm{pH}
pH
of
4
4
4
.
72
72
72
\newline
A) Write a net ionic equation which will account for this result
\newline
B) Using an I.C.E. diagram calculate the value of the
K
a
\mathrm{K}_{\mathrm{a}}
K
a
for ammonium
\newline
C) Calculate the percent hydrolyzed
\newline
Experiment
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What is the discriminant of the quadratic equation
4
x
2
+
3
x
−
6
=
0
4 x^{2}+3 x-6=0
4
x
2
+
3
x
−
6
=
0
?
\newline
−
105
-105
−
105
\newline
87
87
87
\newline
105
105
105
\newline
−
87
-87
−
87
Get tutor help
What is the discriminant of the quadratic equation
4
x
2
+
4
x
+
9
=
0
4 x^{2}+4 x+9=0
4
x
2
+
4
x
+
9
=
0
?
\newline
128
128
128
\newline
−
128
-128
−
128
\newline
−
160
-160
−
160
\newline
160
160
160
Get tutor help
21
21
21
point
\newline
Workbook Question \#
2
2
2
\newline
An oblique cylinder with a base of radius
2
2
2
units is shown. The top of the cylinder can be obtained by translating the base by the directed line segment
A
B
A B
A
B
which has length
6
2
6 \sqrt{2}
6
2
units. The segment
A
B
A B
A
B
forms a
4
5
∘
45^{\circ}
4
5
∘
angle with the plane of the base. What is the volume of the cylinder? Round to the nearest
10
10
10
th
\newline
V
=
type your answer...
c
m
3
V=\text { type your answer... } \mathrm{cm}^{3}
V
=
type your answer...
cm
3
\newline
3
3
3
\newline
1
1
1
point
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In the standard
(
x
,
y
)
(x,y)
(
x
,
y
)
coordinate plane, a circle with its center at
(
8
,
5
)
(8,5)
(
8
,
5
)
and a radius of
9
9
9
coordinate units has which of the following equations?
\newline
F.
(
x
−
8
)
2
+
(
y
−
5
)
2
=
81
(x-8)^{2}+(y-5)^{2}=81
(
x
−
8
)
2
+
(
y
−
5
)
2
=
81
\newline
G.
(
x
−
8
)
2
+
(
y
−
5
)
2
=
9
(x-8)^{2}+(y-5)^{2}=9
(
x
−
8
)
2
+
(
y
−
5
)
2
=
9
\newline
H.
(
x
+
8
)
2
+
(
y
+
5
)
2
=
81
(x+8)^{2}+(y+5)^{2}=81
(
x
+
8
)
2
+
(
y
+
5
)
2
=
81
\newline
J.
(
x
+
8
)
2
+
(
y
+
5
)
2
=
9
(x+8)^{2}+(y+5)^{2}=9
(
x
+
8
)
2
+
(
y
+
5
)
2
=
9
\newline
K.
(
x
+
5
)
2
+
(
y
+
8
)
2
=
81
(x+5)^{2}+(y+8)^{2}=81
(
x
+
5
)
2
+
(
y
+
8
)
2
=
81
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