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Archive
/
Math
Solve
Problem 22601
A car drives at 70 km/h. How far in meters does it travel in 2 seconds? Round to the nearest meter.
See Solution
Problem 22602
Solve for
x
x
x
in the equation
e
3
x
=
e
2
x
+
4
e^{3 x}=e^{2 x+4}
e
3
x
=
e
2
x
+
4
.
See Solution
Problem 22603
How much do lemons cost to make four 9-inch pies needing half a cup of juice each, if they are \$0.55 each?
See Solution
Problem 22604
Find the midpoint
M
M
M
of the segment with endpoints
R
(
2
,
4
)
R(2,4)
R
(
2
,
4
)
and
S
(
−
1
,
7
)
S(-1,7)
S
(
−
1
,
7
)
.
See Solution
Problem 22605
Solve for
x
x
x
in the equation:
−
3
x
+
4
=
−
8
x
−
26
-3 x + 4 = -8 x - 26
−
3
x
+
4
=
−
8
x
−
26
.
See Solution
Problem 22606
Solve for
x
x
x
in the equation
(
3
)
x
=
243
(\sqrt{3})^{x}=243
(
3
)
x
=
243
.
See Solution
Problem 22607
Solve the equation:
−
7
x
+
6
=
−
9
x
−
2
-7 x + 6 = -9 x - 2
−
7
x
+
6
=
−
9
x
−
2
.
See Solution
Problem 22608
Calculate the usual dose of Ibuprofen in mg for an 18-month-old child weighing 26 pounds, using 5 mg/kg. Round to the nearest mg.
See Solution
Problem 22609
A 129-page report needs 16 copies. Calculate the paper cost for printing using reams (500 pages) at \$3.72 each. Round to the nearest cent.
See Solution
Problem 22610
Find the value of
x
x
x
in the equation
x
10
=
1
0
60
x^{10}=10^{60}
x
10
=
1
0
60
.
See Solution
Problem 22611
Find
x
x
x
for
f
(
x
)
=
17
x
−
18
f(x)=17x-18
f
(
x
)
=
17
x
−
18
when
f
(
x
)
=
33
f(x)=33
f
(
x
)
=
33
. Options: (A) 7, (B) 3, (C) 4.
See Solution
Problem 22612
Rafael wants to save for his daughter's college by depositing yearly in an annuity with
7.2
%
7.2\%
7.2%
interest. How much must he deposit each year to reach a total of \$72,000 in 14 years? Round the final answer to the nearest cent.
See Solution
Problem 22613
Convert the wavelength of light,
8
×
1
0
−
2
8 \times 10^{-2}
8
×
1
0
−
2
meter, into decimal form:
8
×
1
0
−
2
meter
=
□
meter
8 \times 10^{-2} \text{ meter }=\square \text{ meter }
8
×
1
0
−
2
meter
=
□
meter
See Solution
Problem 22614
Convert
3.262
×
1
0
3
3.262 \times 10^{3}
3.262
×
1
0
3
into standard form. What is
3.262
×
1
0
3
=
3.262 \times 10^{3}=
3.262
×
1
0
3
=
? (Enter as an integer or decimal.)
See Solution
Problem 22615
Find the value of
5
2
log
36
(
6
)
5^{2 \log_{36}(6)}
5
2
l
o
g
36
(
6
)
without a calculator.
See Solution
Problem 22616
Solve the inequality:
2
+
2
x
<
−
4
2 + 2x < -4
2
+
2
x
<
−
4
.
See Solution
Problem 22617
Find the class width for 7 classes with a frequency range of 19 to 285 and data range of 266.
See Solution
Problem 22618
Find the percent change in CPI from 1995 (160) to 2000 (171). Use the formula:
Percent Change
=
(
171
−
160
)
160
×
100
\text{Percent Change} = \frac{(171 - 160)}{160} \times 100
Percent Change
=
160
(
171
−
160
)
×
100
. Round to the nearest tenth.
See Solution
Problem 22619
Find the line equation through
(
−
4
,
−
32
)
(-4,-32)
(
−
4
,
−
32
)
with slope
m
=
9
m=9
m
=
9
in standard form
A
x
+
B
y
=
C
Ax + By = C
A
x
+
B
y
=
C
.
See Solution
Problem 22620
Calculate
2.
4
3
5
+
π
−
1
\frac{2.4^{3}}{\sqrt{5+\pi}-1}
5
+
π
−
1
2.
4
3
and round to the nearest thousandth.
See Solution
Problem 22621
Calculate
2.
4
3
5
+
π
−
1
\frac{2.4^{3}}{\sqrt{5+\pi}-1}
5
+
π
−
1
2.
4
3
and round to the nearest thousandth.
See Solution
Problem 22622
Solve for
x
x
x
:
12
e
−
5
x
=
2
12 e^{-5 x}=2
12
e
−
5
x
=
2
. Provide the exact answer using symbolic notation and fractions.
See Solution
Problem 22623
The plumber charges a flat rate of \$50 plus \$28 per hour. If the bill was \$134, how long did he work?
See Solution
Problem 22624
Solve
7
a
x
+
8
a
x
=
9
a
x
+
6
7ax + 8ax = 9ax + 6
7
a
x
+
8
a
x
=
9
a
x
+
6
for
x
x
x
, given that
a
≠
0
a \neq 0
a
=
0
.
See Solution
Problem 22625
Dimos bikes 144 miles a day for 5 days. Calculate total miles:
144
×
5
144 \times 5
144
×
5
.
See Solution
Problem 22626
Resuelve las siguientes operaciones:
1.
2
7
−
1
=
\frac{2}{7}-1=
7
2
−
1
=
2.
1
2
−
2
3
+
3
4
=
\frac{1}{2}-\frac{2}{3}+\frac{3}{4}=
2
1
−
3
2
+
4
3
=
3.
(
2
7
)
(
−
4
)
=
\left(\frac{2}{7}\right)(-4)=
(
7
2
)
(
−
4
)
=
4.
(
−
3
5
)
(
2
7
)
(
−
1
2
)
=
\left(-\frac{3}{5}\right)\left(\frac{2}{7}\right)\left(-\frac{1}{2}\right)=
(
−
5
3
)
(
7
2
)
(
−
2
1
)
=
5.
−
1
4
−
1
5
=
\frac{-\frac{1}{4}}{-\frac{1}{5}}=
−
5
1
−
4
1
=
6.
−
3
7
8
=
\frac{-\frac{3}{7}}{8}=
8
−
7
3
=
See Solution
Problem 22627
Solve
e
6
t
+
3
=
5
e
3
−
t
e^{6t+3}=5e^{3-t}
e
6
t
+
3
=
5
e
3
−
t
for
t
t
t
using exact answers and fractions.
See Solution
Problem 22628
Find the percent change from
A
A
A
to
B
B
B
and from
B
B
B
to
A
A
A
for
A
=
$
1.23
A=\$ 1.23
A
=
$1.23
and
B
=
$
1.50
B=\$ 1.50
B
=
$1.50
.
See Solution
Problem 22629
Desiree swims for 25 minutes daily. How many total minutes does she swim in 14 days? Calculate:
25
×
14
25 \times 14
25
×
14
.
See Solution
Problem 22630
Solve for
x
x
x
:
log
3
(
x
)
+
5
log
3
(
x
7
)
=
17
\log _{3}(x) + 5 \log _{3}(x^{7}) = 17
lo
g
3
(
x
)
+
5
lo
g
3
(
x
7
)
=
17
.
See Solution
Problem 22631
Solve the inequality:
−
8
x
−
6
>
−
62
-8x - 6 > -62
−
8
x
−
6
>
−
62
See Solution
Problem 22632
Calculate
1.
8
3
4
+
π
−
2
\frac{1.8^{3}}{\sqrt{4+\pi}-2}
4
+
π
−
2
1.
8
3
and round your answer to the nearest thousandth.
See Solution
Problem 22633
Find the molar concentration in mol/L using mass density 2.40 g/mL and molar mass 116.86 g/mol:
(
2.40
g/mL
)
⋅
(
1
mL
/
1
0
−
3
L
)
(
116.86
g/mol
)
\frac{(2.40 \, \text{g/mL}) \cdot (1 \, \text{mL}/10^{-3} \, \text{L})}{(116.86 \, \text{g/mol})}
(
116.86
g/mol
)
(
2.40
g/mL
)
⋅
(
1
mL
/1
0
−
3
L
)
See Solution
Problem 22634
Find the inverse of the function
y
=
e
14
x
−
3
y=e^{14 x-3}
y
=
e
14
x
−
3
.
See Solution
Problem 22635
Solve for
c
c
c
in the equation
3
(
2
c
+
3
c
)
=
60
3(2 c + 3 c) = 60
3
(
2
c
+
3
c
)
=
60
.
See Solution
Problem 22636
Find the volume of a rectangular prism using
V
=
ℓ
×
w
×
h
V=\ell \times w \times h
V
=
ℓ
×
w
×
h
with
ℓ
=
6
\ell=6
ℓ
=
6
,
w
=
4
w=4
w
=
4
,
h
=
9
h=9
h
=
9
. What is
V
V
V
?
See Solution
Problem 22637
How many cabins are full with 148 campers if each cabin holds 28 campers? Use
n
=
148
28
n = \frac{148}{28}
n
=
28
148
.
See Solution
Problem 22638
Find the volume of a rectangular prism using
V
=
ℓ
×
w
×
h
V=\ell \times w \times h
V
=
ℓ
×
w
×
h
, where
ℓ
=
6
\ell=6
ℓ
=
6
,
w
=
4
w=4
w
=
4
,
h
=
9
h=9
h
=
9
. What is
V
V
V
?
See Solution
Problem 22639
Jack's fishing gear cost \$6.79. What is the total cost including 7% sales tax?
See Solution
Problem 22640
Find the inverse of
y
=
ln
(
x
8
−
2
)
y=\ln \left(x^{8}-2\right)
y
=
ln
(
x
8
−
2
)
for
x
>
2
1
/
8
x>2^{1/8}
x
>
2
1/8
.
See Solution
Problem 22641
Calculate the volume of a rectangular prism with dimensions
4
×
4
×
4
4 \times 4 \times 4
4
×
4
×
4
.
See Solution
Problem 22642
A 4x6 inch map (24 sq in) needs to fit in a brochure with an area of 6 sq in. What scale is needed? Show your work.
See Solution
Problem 22643
Find the volume of a rectangular prism toy chest that is 4 ft long, 2 ft wide, and 2 ft tall. Use
V
=
l
×
w
×
h
V = l \times w \times h
V
=
l
×
w
×
h
.
See Solution
Problem 22644
Find
x
x
x
such that
a
x
=
b
a^x = b
a
x
=
b
given
4
a
=
9
b
3
4\sqrt{a} = 9\sqrt[3]{b}
4
a
=
9
3
b
and
a
=
2
3
a=\frac{2}{3}
a
=
3
2
.
See Solution
Problem 22645
Find the volume of a solid with a circular base radius 4 and square cross-sections perpendicular to the
x
x
x
-axis.
See Solution
Problem 22646
Solve for
θ
\theta
θ
and
t
t
t
in the equation
ω
=
θ
t
\omega=\frac{\theta}{t}
ω
=
t
θ
.
See Solution
Problem 22647
Calculate the quotients and verify your results: 10.
3.38
÷
2.6
=
3.38 \div 2.6=
3.38
÷
2.6
=
, 11.
6.12
÷
1.53
=
6.12 \div 1.53=
6.12
÷
1.53
=
.
See Solution
Problem 22648
Calculate
0.63
÷
0.9
0.63 \div 0.9
0.63
÷
0.9
.
See Solution
Problem 22649
Calculate the total number of license plates with 2 letters and 5 digits. Use the formula:
2
6
2
×
1
0
5
26^2 \times 10^5
2
6
2
×
1
0
5
.
See Solution
Problem 22650
Convert
6
7
8
6 \frac{7}{8}
6
8
7
to an improper fraction in three different methods.
See Solution
Problem 22651
How many ways can you choose 2 characters from 8 volunteers for a play? Answer:
C
(
8
,
2
)
C(8, 2)
C
(
8
,
2
)
.
See Solution
Problem 22652
Find the ratio (
a
:
b
a: b
a
:
b
) of the Perimeter to the Area of a rectangle with sides 2.5 in and 4.25 in.
See Solution
Problem 22653
How many ways can 5 players be selected from 25 for a basketball game? Use the formula for combinations:
(
25
5
)
\binom{25}{5}
(
5
25
)
.
See Solution
Problem 22654
What is the probability that Izaiah pulls a Starburst that is not green from a bag of 25 candies with 6 green ones?
See Solution
Problem 22655
Solve for
x
x
x
:
1
6
−
x
=
4
x
+
2
16^{-x}=4^{x+2}
1
6
−
x
=
4
x
+
2
See Solution
Problem 22656
How many different car choices are there with 3 body styles, 2 colors, and 3 models? Calculate:
3
×
2
×
3
3 \times 2 \times 3
3
×
2
×
3
.
See Solution
Problem 22657
Find the volume of a clubhouse made of
n
n
n
cubes, each with side length
a
a
a
. Use the formula for volume.
See Solution
Problem 22658
Find the largest angle in a triangle with angles in the ratio
1
:
2
:
9
1:2:9
1
:
2
:
9
.
See Solution
Problem 22659
Solve for
x
x
x
in the equation
x
9
=
1
0
54
x^{9}=10^{54}
x
9
=
1
0
54
.
See Solution
Problem 22660
Find
a
a
a
from the equation
c
=
8
π
a
b
c=8 \pi a b
c
=
8
πab
.
See Solution
Problem 22661
Solve for
c
c
c
in the equation
a
(
b
−
c
)
=
d
a(b-c)=d
a
(
b
−
c
)
=
d
.
See Solution
Problem 22662
Find the value of
□
\square
□
in the equation
(
38
c
m
3
)
⋅
□
=
?
m
3
(38 \mathrm{cm}^3) \cdot \square = ? \mathrm{m}^3
(
38
cm
3
)
⋅
□
=
?
m
3
.
See Solution
Problem 22663
Find the value of
x
x
x
in the equation
x
3
/
2
=
8
x^{3 / 2} = 8
x
3/2
=
8
.
See Solution
Problem 22664
Find the volume-to-surface area ratio for volume
30
cm
3
30 \, \text{cm}^3
30
cm
3
and surface area
62
cm
2
62 \, \text{cm}^2
62
cm
2
as a reduced fraction.
See Solution
Problem 22665
Solve for
q
q
q
in the equation
s
=
4
p
+
4
q
s=4p+4q
s
=
4
p
+
4
q
.
See Solution
Problem 22666
How many ways can you choose 5 toppings from 11 options at a deli? Use the formula for combinations:
C
(
n
,
r
)
=
n
!
r
!
(
n
−
r
)
!
C(n, r) = \frac{n!}{r!(n-r)!}
C
(
n
,
r
)
=
r
!
(
n
−
r
)!
n
!
.
See Solution
Problem 22667
Solve for height
h
h
h
in the trapezoid area formula
A
=
1
2
h
(
a
+
b
)
A=\frac{1}{2} h(a+b)
A
=
2
1
h
(
a
+
b
)
.
See Solution
Problem 22668
Kasi has 136 bricks for a patio with 8 equal rows. How many bricks per row? Solve:
x
=
136
8
x = \frac{136}{8}
x
=
8
136
.
See Solution
Problem 22669
Calculate the number of ways to award gold, silver, and bronze medals to 8 sprinters in a 100-meter race.
See Solution
Problem 22670
Find
w
w
w
in the perimeter formula
P
=
2
(
l
+
w
)
P=2(l+w)
P
=
2
(
l
+
w
)
. Options:
w
=
P
2
+
l
w=\frac{P}{2}+l
w
=
2
P
+
l
,
w
=
P
2
−
l
w=\frac{P}{2}-l
w
=
2
P
−
l
,
w
=
2
P
−
l
w=2P-l
w
=
2
P
−
l
,
w
=
P
−
l
2
w=\frac{P-l}{2}
w
=
2
P
−
l
.
See Solution
Problem 22671
Guadalupe bought a 6-pack of Mt. Dew for \$7.14. What is the unit price per can?
See Solution
Problem 22672
A pianist has 8 pieces for a recital. How many ways can she arrange them? Your answer is:
8
!
8!
8
!
See Solution
Problem 22673
In how many ways can 8 runners finish in 1st, 2nd, and 3rd places in an 800 meter race?
See Solution
Problem 22674
How many ways can a student choose 3 classes from 8 needed classes to graduate? Use combinations:
(
8
3
)
{8 \choose 3}
(
3
8
)
.
See Solution
Problem 22675
Find the value of
log
3
(
1
9
)
\log _{3}\left(\frac{1}{9}\right)
lo
g
3
(
9
1
)
without a calculator.
See Solution
Problem 22676
How many ways can 5 runners finish a race without ties? Your answer is:
5
!
5!
5
!
See Solution
Problem 22677
Round 4,827 to the nearest ten.
See Solution
Problem 22678
Javier has 9 Judy Moody books. How many ways can he arrange them on his shelf? Answer:
9
!
9!
9
!
See Solution
Problem 22679
How many ways can you choose 3 students from a class of 22? Use the formula for combinations:
(
22
3
)
\binom{22}{3}
(
3
22
)
.
See Solution
Problem 22680
Round 4,827 to the nearest ten, hundred, and thousand.
See Solution
Problem 22681
How many different pizzas can you create with 4 crusts, 3 cheeses, 6 meats, and 4 veggies if you choose 1 of each?
See Solution
Problem 22682
Choose 4 toppings from 12. How many combinations are there? Answer:
(
12
4
)
\binom{12}{4}
(
4
12
)
See Solution
Problem 22683
Evaluate the integral using substitution and partial fractions:
∫
1
x
x
+
1
d
x
\int \frac{1}{x \sqrt{x+1}} d x
∫
x
x
+
1
1
d
x
.
See Solution
Problem 22684
A designer has 7 colors for a flag with 2 vertical stripes of different colors. How many flags can be made?
See Solution
Problem 22685
Find the expression value for
x
=
−
6
x=-6
x
=
−
6
and
y
=
−
1
2
y=-\frac{1}{2}
y
=
−
2
1
:
4
(
x
2
+
3
)
−
2
y
4(x^{2}+3)-2y
4
(
x
2
+
3
)
−
2
y
. A. -131 B. -35 C.
57
%
57\%
57%
D. 157
See Solution
Problem 22686
How many ways can you choose 3 books from 9? Your answer is:
(
9
3
)
\binom{9}{3}
(
3
9
)
See Solution
Problem 22687
What is 2,653 rounded to the nearest hundred?
See Solution
Problem 22688
Nico spends \$5.76 on tomatoes at \$3.20 per pound. How many pounds did he buy?
See Solution
Problem 22689
How many ways can you award first, second, and third prizes among 605 contestants? Your answer is:
605
×
604
×
603
605 \times 604 \times 603
605
×
604
×
603
See Solution
Problem 22690
What is the value of the 7 in 738,499? A. 700 B. 7,000 C. 70,000 D. 700,000
See Solution
Problem 22691
How many ways can a person choose 4 different bags of chips from 12 varieties? Use the combination formula:
(
12
4
)
\binom{12}{4}
(
4
12
)
.
See Solution
Problem 22692
Which number completes this?
300
,
000
+
…
+
4
,
000
+
800
+
90
+
2
=
364
,
890
300,000 + \ldots + 4,000 + 800 + 90 + 2 = 364,890
300
,
000
+
…
+
4
,
000
+
800
+
90
+
2
=
364
,
890
. A. 60,000 B. 6,000 C. 600
See Solution
Problem 22693
How many different outcomes are possible when rolling three different colored four-sided dice?
See Solution
Problem 22694
Find the value of
a
+
2
b
c
3
a
\frac{a+2bc}{3a}
3
a
a
+
2
b
c
for
a
=
4
a=4
a
=
4
,
b
=
−
5
b=-5
b
=
−
5
, and
c
=
−
7
c=-7
c
=
−
7
. Choices: A.
−
5
1
2
-5 \frac{1}{2}
−
5
2
1
B.
−
1
2
3
-1 \frac{2}{3}
−
1
3
2
C.
6
1
6
6 \frac{1}{6}
6
6
1
D. 171
See Solution
Problem 22695
Find the missing probability
P
(
3
)
P(3)
P
(
3
)
in the distribution where
P
(
0
)
=
0.2
P(0) = 0.2
P
(
0
)
=
0.2
,
P
(
1
)
=
0.45
P(1) = 0.45
P
(
1
)
=
0.45
,
P
(
2
)
=
0.3
P(2) = 0.3
P
(
2
)
=
0.3
.
See Solution
Problem 22696
What is the standard form of the number
30
,
000
+
5
,
000
+
700
+
9
30,000 + 5,000 + 700 + 9
30
,
000
+
5
,
000
+
700
+
9
?
See Solution
Problem 22697
How many hours must you work at \$6.15/hour to earn at least \$100?
See Solution
Problem 22698
How many hours at \$6.15/hour do you need to work to earn at least \$100?
See Solution
Problem 22699
Find the value of
ln
(
e
4
)
+
ln
(
e
5
)
+
ln
(
e
6
)
\ln(e^{4}) + \ln(e^{5}) + \ln(e^{6})
ln
(
e
4
)
+
ln
(
e
5
)
+
ln
(
e
6
)
as a whole number.
See Solution
Problem 22700
Graph the system of equations:
y
=
−
1
2
x
+
5
y=-\frac{1}{2} x+5
y
=
−
2
1
x
+
5
and
y
=
1
2
x
+
6
y=\frac{1}{2} x+6
y
=
2
1
x
+
6
. Determine the solution type.
See Solution
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