Answer: 13n + 20
Step-by-step explanation:
The cost of each book is $13. That means that if you end up buying "n" books, cost would be:
= Cost of each book * number of books
= 13 * n
= 13n
You would also get charged a flat rate for shipping of $20 which would be added to the above cost to bring a total of:
= 13n + 20
Question 8 of 10
In a normal distribution, what percentage of the data falls within 3 standard
deviations of the mean?
O A. 34%
O B. 68%
O c. 99.7%
O D. 95%
Using the Empirical Rule, it is found that the percentage within 3 standard deviations of the mean in the Normal distribution is given by:
c. 99.7%.
What does the Empirical Rule state?It states that, for a normally distributed random variable:
Approximately 68% of the measures are within 1 standard deviation of the mean.Approximately 95% of the measures are within 2 standard deviations of the mean.Approximately 99.7% of the measures are within 3 standard deviations of the mean.Hence, option C is correct.
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Line AC is tangent to circle O at point C what is the length of line segment AC
Answer:
tangent is a line passing a circle and tuching it at just 1 point
Step-by-step explanation:
43. Ricardo just received a shipment of 50 tool sheds for his garden supply store. Each shed costs him $40. Which of the following could Ricardo use to find the total amount he will pay for the tool sheds? A (5 X 4) X 10' = 200 B (5 X 4) X 102 = 2,000 C (5 X 4) X 10% = 20,000 D (5 x 4) X 10' = 200.000
Answer:
its the one with 2000$ in it
Step-by-step explanation:
what the answer for this equation 2+(3-2x2)x1
Answer:
I got 1 (but i was using math.way so im so sorry if its wrong)
Step-by-step explanation:
also i love your pf.p
Answer:
2+(3-2*2)*1
2+(3-4)*1
2+(-1)*1
2-1
1 answer
Pls what’s the answer
Answer:
D is correct option.
Step-by-step explanation:
g(x) =-3 root x-1.
Which line segment is a radius of K?
Answer:
KD
JK
Step-by-step explanation:
Hope it helps you in your learning process
Find the measures of an exterior angle and an interior angle given the number of sides of each regular polygon.
Round to the nearest tenth, if necessary.
Answer:
[tex]\theta = 25.7^\circ[/tex] --- Measure of each exterior angle
[tex]\theta = 154.3^\circ[/tex] --- Measure of each interior angle
Step-by-step explanation:
Given [Missing from the question]
[tex]n = 14[/tex] --- number of sides
Required
- The measure of an exterior angle
- The measure of an interior angle
For an n-sided polygon, the measure of each exterior angle is:
[tex]\theta = \frac{360}{n}[/tex]
Substitute 14 for n
[tex]\theta = \frac{360}{14}[/tex]
[tex]\theta = 25.7^\circ[/tex]
For an n-sided polygon, the measure of each interior angle is:
[tex]\theta = \frac{(n - 2) * 180}{n}[/tex]
Substitute 14 for n
[tex]\theta = \frac{(14 - 2) * 180}{14}[/tex]
[tex]\theta = \frac{12 * 180}{14}[/tex]
[tex]\theta = \frac{2160}{14}[/tex]
[tex]\theta = 154.3^\circ[/tex]
I need help with this one! Please
Answer:
Less than or equal to 0
Step-by-step explanation:
You selected the correct answer.
Hope this helps
The graph represents the piecewise function:
Answer:
x if -3is less than x is less than -1
5 is -1 is less than x is less than 1
Step-by-step explanation:
You find the slope of the line for the first piece when the x-values range from -3 to -1.
For the second piece, the line is y=5 because the line is horizontal.
Answer:
x+3; 5
Step-by-step explanation:
The first piece, shows the diagonal part in Quadrant II.
The line segment is colinear with the line y=x+3, because the slope is 1, and the y-intercept is 3. So the piece would be defined as x+3.
The second line segment is the flat one, which has a slope of 0 and its y-intercept is 5. So the piece would be defined as 0x+5 or 5
how do you use change of base formula
Answer:
According to the change-of-base formula, we can rewrite the log base 2 as a logarithm of any other base. Since our calculators can evaluate the natural log, we might choose to use the natural logarithm, which is the log base e.
Step-by-step explanation:
What is the volume of a sphere with a radius of 6.6 cm, rounded to the nearest tenth of a cubic centimeter?
Volume is a three-dimensional scalar quantity. The volume of a sphere with a radius of 6.6 cm, rounded to the nearest tenth of a cubic centimeter is 1204.3.
What is volume?A volume is a scalar number that expresses the amount of three-dimensional space enclosed by a closed surface.
The volume of a sphere is given by the formula (4/3)πR³, where R is the radius of the circle. Since the radius of the sphere is 6.6 cm, the volume of the sphere will be,
Volume of Sphere = (4/3) × π × (6.6cm)³ = 1204.26 cm³ ≈ 1204.3³
Hence, the volume of a sphere with a radius of 6.6 cm, rounded to the nearest tenth of a cubic centimeter is 1204.3.
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PLEASE HELP!
What is the equation of the directrix
for the following parabola:
(x - 1)^2 = 12(y + 2)
A. Y = -5
B. X = -5
C. y = -3
D. y = -12
Answer:
y=-5
Step-by-step explanation:
Identify the following as a radius or diameter and its length. segment EB
Given:
The diagram of a circle.
To find:
The radius or diameter and its length, segment EB.
Solution:
If a line segment connects the center of a circle and a point on the circumference of the circle, then the line segment is known as radius.
In the given figure A is the center of the circle and points B, C, E, D are on the circumference of the circle.
So, AB, AC, AE, AD are radii of the given circle.
[tex]AB=AC=AE=AD=4\text{ cm}[/tex]
If a line segment connects two points on the circumference and passes through the center of the circle, then the line segment is known as diameter of the circle.
In the given figure B and E are two points on the circumference of the circle and the segment BE passes through the center A. So, BE is the diameter of the circle.
Length of the diameter is:
[tex]EB=AE+AB[/tex]
[tex]BE=4+4[/tex]
[tex]BE=8[/tex]
Therefore, the segment EB is a diameter and length of the segment EB is 8 cm.
The three lines represent the amount of water, over time, in three tanks that are the same size. Which tank is filling most quickly? Choose 1 answer
Tank A
Tank B
Tank C
Answer:
Tank A
Step-by-step explanation:
If the lines goes accross each tank the first tank would fill up first then the next one and it keeps going.
Hope this helps!
Answer:
Tank A
Step-by-step explanation:
The tank that fills fastest will have the steepest line graphed. The steepest line is the graph for Tank A. Tank A fills the most in the least amount of time, so this is the answer.
I hope this helps :) Good luck ^^
Can someone please help me with math.
Which angles are supplementary angles?
Answer:
Supplementary angles are two angles with a sum of 18 0 ∘ 180 ^\circ 180∘ . A common case is when they lie on the same side of a straight line.
Answer - KJM and KJH
If i'm wrong please tell me
WILL GIVE BRAINLIST Please help
Sample Answer:
Both prisms are equal in volume, with it being 30 in^3. Although the triangle prism has a length of twice as much, this is countered by the formula for a triangular prism which requires for it to be divided by 2, where this is not present within the formula for a rectangular prism.
Step-by-step explanation:
For this, just pretend that h=1 to make the math easier. So the rectangular prism has a cross section that is 6 by 5 inches, so that will be its L & W.
The triangular prism has a cross section that is a 12 inch base times a 5 inch interior height, this will give the triangle's length and height respectively In this case, h will be its width, making the Base of the triangle which is Length * Width. Think of it like flipping over this prism, making the side facing you and make it the bottom of the prism.
Now, with the formulas for volume of the prisms:
Rectangular: L * W * H
Triangle: (L*W * H) / 2
Then just plug in the numbers:
Rectangular Prism:
L * H * H
6 * 5 * 1
30 * 1
30
Triangle Prism:
(12 * 5 * 1) / 2
60 / 2
30
They are equal to each other.
An electrician needs 3/4 roll of electrical wire to wire each room in a house . How many rooms can he wire with 6 rolls
Answer:
8 rooms
Step-by-step explanation:
6 ÷ 3/4 which equals 6 x 4/3 = 8
Answer:
8 rooms
Step-by-step explanation:
6 / (3/4) = 8
66 oz = __lb in a mixed number
Answer:
[tex]4\frac{1}{8}[/tex] pounds
Step-by-step explanation:
1 pound = 16 ounces
[tex]\frac{66}{16} =\frac{y}{1}[/tex]
16 × y = 66 × 1
16y = 66
16y ÷ 16 = 66 ÷ 16
[tex]y=4\frac{1}{8}[/tex]
Answer: 4 1/8
Step-by-step explanation:
16 oz in 1 lb
64 -> 4 lb
2/16 = 1/8
4 1/8 lb
Which is greater, the circumference of a circle with radius 3 ft, or the distance around a semicircle with diameter 16 A? By how much? circle, by 40 ft circle, by 2n ft semicircle, by 40 ft Od semicircle, by 21 ft
Answer:
Option C
Step-by-step explanation:
Circumference of a circle = [tex]2\pi r[/tex]
Circumference of a circle with radius 3 ft= [tex]2\pi *3 = 6\pi[/tex]
Circumference of a circle with radius 8 ft or 16 ft= [tex]2\pi *8/2 = 16\pi/2 = 8\pi[/tex]
The difference between the two circle
[tex]8 \pi - 6\pi = 2\pi \\= 2 * 3.14\\= 6.28\\[/tex]
Hence, option C is correct
have you ever looked more to look further to even think to do more?
Answer:
wait what does that mean I don't get it
have a good day :)
Step-by-step explanation:
HELP is 3.31227766... a rational OR irrational number?
Answer:
irrational
hope this helps
have a good day :)
Step-by-step explanation:
Answer:
irrational.
Step-by-step explanation:
A group of students stood in a circle to play a
game. The circle had a diameter of 22 meters.
Which measurement is closest to the area of the
circle in meters ?
Answer: Choice C) 379.94 square meters
=========================================================
Work Shown:
Diameter = 22 meters
Radius = 11 meters (half the diameter)
We'll plug r = 11 into the formula below
A = pi*r^2
A = 3.14*11^2
A = 379.94
This value is approximate since pi = 3.14 is approximate. Use more decimal digits of pi to get a more accurate area value.
can someone please help me?? as soon as possible! would really appreciate it
x = ___ units
Answer:
[tex] RT = \frac{ \sin(60 \degree) }{ \sqrt{3} } \\ RT = 0.5 \\ x = RT \tan(45 \degree) \\ x = 0.5 \times \tan(45 \degree) \\ x = 0.5 \: units[/tex]
Answer:
the first angle is 180 - (90 + 60) = 30
second angle is 180 - (45 + 90) = 45
30 + 45 = 75
3\/- 75 = 4.217163327 units
Inverse Functions, graphs
Answer:
a.
inverse
of
(0,1)=(1,0)
(1,0)=(0,1)
(2,-1)=(-1,2)
(3,0)=(0,3)
(4,1)=(1,4)
Step-by-step explanation:
b.
yes the function are inverse
as
(-1,2)=(2,-1)
(0,1)=(1,0)
Take any one point .
(-2,-1)For inverse
(x,y) should be (y,-x)
Apply
(-(-2),-1)(-1,2)Yes the functions are inverses of each other
Marcus is choosing 4 books to read from a list of 15 books. If order matters, how many ways can he choose to read the books?
4
32,760
23,760
60
Answer:
32,760
Step-by-step explanation:
Given :
Since the order matters, we use the permutation relation :
Recall :
nPr = n! ÷ (n - r)!
n = 15 ; r = 4
15P4 = 15! ÷ (15 - 4)!
15P4 = 15! ÷ 11!
15P4 = (15 * 14 * 13 * 12)
15P4 = 32,760
Billy worked for 38 hours last week. His boss gave him $361 for his work
last week. Write AND solve a multiplication equation to find how much
money Billy makes per hour of work.
Hows the weather today..?
Answer:
good
Step-by-step explanation:
In the first football game, the quarterback completed 18 out of 24 passes he attempted.
a) What percent of the passes did the quarterback complete?
b) In the next game, the quarterback completed 19 of the 26 passes he attempted. What is the OVERALL percentage of completion for the two games?
Answer:
A) 75%
B) 74%
Step-by-step explanation:
A) 18/24=0.75
B) 37/50= 0.74
Daud bought a plot of land with an area of 6 2/5 km. He divided the land equally into 8 small plots. What was the total area of 3 of the small plots of land?
Answer: [tex]\dfrac{12}{5}\ km^2[/tex]
Step-by-step explanation:
Given
The area of land is [tex]6\frac{2}{5}\ km^2[/tex]
Daud divide the land into 8 equal plots
So, the area of a single small plot is
[tex]\Rightarrow \dfrac{\dfrac{30+2}{5}}{8}\\\\\Rightarrow \dfrac{32}{5\times 8}\\\\\Rightarrow \dfrac{4}{5}\ km^2[/tex]
The area of three such plots
[tex]\Rightarrow 3\times \dfrac{4}{5}\\\\\Rightarrow \dfrac{12}{5}\ km^2[/tex]