Answer:
2826 inches^2
Step-by-step explanation:
The general formula for the total surface area of a regular pyramid is
T.S.A.=12pl+B
Where p represents the perimeter of the base, l the slant height and B the area of the base.
The perimeter of the base is.
p=2L+2W
P=2*10+2*9
P=20+18
P= 38 inches
The area of the base is.
B=10*9
B=90in^2
T.S.A.=12(38)(6)+90
T.S.A=2736+90
T.S.A=2826 inches^2
Hence the paper needed is 2826 inches^2
Direct Variation
The distance D that a spring is stretching by a hanging object varies directly as the weight W of the object. If a 9-kg object stretches a spring 54 cm. Find the distance when the weight is 2-kg. Round your answer to the nearest whole centimeter.
a. 65 cm
b. 12 cm
c. 0 cm
d. 6 cm
Please select the best answer from the choices provided
Answer:
B. 12
Step-by-step explanation:
I calculated it logically
A 82-inch candle burns down in 11 hours. How far has it burned after 11 hours?
Use the dropdown menu to state your answer as a decimal, mixed number, or
improper fraction.
Answer type: Whole number/Decimal
in.
Submit Answer
Answer:
Anger.
Step-by-step explanation:
Determine if lines AB and CD are parallel, perpendicular, or neither. A(-3,8), B(3,2), C(7,1), D(5,-1)
Answer:
Step-by-step explanation:
The slope of line AB is
[tex]\frac{2-8}{3-(-3)} = \frac{-6}{6} = -1[/tex]
The slope of line CD is
[tex]\frac{-1-1}{5-7} = \frac{-2}{-2} = 1[/tex]
Since the slopes multiply to [tex]-1[/tex], these lines are perpendicular to one another.
The lines AB and CD are perpendicular to one another.
What is the slope?The slope is the ratio of the vertical changes to the horizontal changes between two points of the line.
m = ( y₂ - y₁ ) / ( x₂ - x₁ )
where (x₁, y₁) and (x₂, y₂) are the two points that you are trying to find the slope between.
let (x₁, y₁ ) = A(-3,8), and (x₂, y₂ ) = B(3,2)
The slope of line AB is;
m = ( y₂ - y₁ ) / ( x₂ - x₁ )
m = ( 2 - 8) / ( 3 +3 )
m = -1
let (x₁, y₁ ) = C(7,1) and (x₂, y₂ ) = D(5,-1)
The the slope of line CD is;
m = ( y₂ - y₁ ) / ( x₂ - x₁ )
m = ( -1 - 1) / ( 5 - 7 )
m = 1
Since slope of AB and CD are not equal the lines are not parallel therefore, these lines are perpendicular to one another.
Learn more about slope here:
https://brainly.com/question/2503591
#SPJ2
Find the 12th term of the geometric sequence 5, 20, 80, ...5,20,80
Answer:
a₁₂ = 20971520
Step-by-step explanation:
The nth term of a geometric sequence is
[tex]a_{n}[/tex] = a₁[tex](r)^{n-1}[/tex]
where a₁ is the first term and r the common ratio
Here a₁ = 5 and r = a₂ ÷ a₁ = 20 ÷ 5 = 4 , then
a₁₂ = 5 × [tex]4^{11}[/tex] = 5 × 4194304 = 20971520
Rewrite the expression using exponents.
7 • 4 • 4 • 4
(Type whole numbers.)
Answer: 7×4³
Step-by-step explanation:
Answer:
7 x 4³
Step-by-step explanation:
using exponents to my understanding,
the answer vis supposed to be;
7 x 4³
Use 3.14 as an approximation of π. Which is the area of a circle with a radius of 6cm?
A. 18.84 cm^2
B. 28.26 cm^2
C. 37.68 cm^2
D. 113.04 cm^2
E. About 355 cm^2
Answer:
D - 113.04cm²
Step-by-step explanation:
πr² (formula for area of a circle)
3.14×6²
= 113.04
In desperate need. for answer 11 and 12.
Question 11 has to have an answer with explanation and
Question 12 has 3 parts. I need answers to all three with explanations for all three.
What clockwise rotation is equivalent to a 90° counterclockwise rotation?
Answer: 270°
Step-by-step explanation:
A full rotation is 360° so to find out the clockwise equivalent of a 90° counterclockwise rotation, deduct the counterclockwise rotation from 360°:
= 360 - 90
= 270°
If you rotated 90° counterclockwise, you would get to the same point as if you rotated 270° clockwise.
Solve for r.
K=4r-7s
r=
Answer:
[tex]r=\frac{k+7s}{4}[/tex]
Step-by-step explanation:
100 POINTS !!!! Let f(x)=√3x and g(x)=x-6 What's the smallest number that is in the domain of fog?
Answer:
6
Step-by-step explanation:
fog(x) = √3(x-6)
Domain => 3(x-6) ≥ 0
<=> x-6≥ 0
=> x ≥ 6
so, the smallest number is 6
As
(fog)(x)=f(g(x))
g(x)=x-6f(g(x))
f(x-6)√3(x-6)So
x-6≥0x≥6Smallest no is 6
Express ( 3/2x-2)^2
as a trinomial in simplest form.
Answer:
9/4x^2 - 6x +4
Step-by-step explanation:
( 3/2x-2)^2
(3/2x-2)(3/2x-2)
9/4x^2 - 3x - 3x +4
9/4x^2 - 6x +4
3/2 x 2 = 6/2 = 3
Step-by-step explanation:
( 3/2x-2)² = 9/4 x²- 6x +4
Sove for X choose one. Pls
how many 1/8 cups are in 4/4
Answer:8
is the answer
Help on this pls ?????????
Answer:
8u =32 this is the equation
Answer and Step-by-step explanation:
8u = 32 is the answer.
This is because there are eight U's, and it is equal to 32.
#teamtrees #PAW (Plant And Water)
The x-intercept is the point on the x-axis where the line crosses it. The
y-coordinate of the line's x-intercept is always zero. The x-coordinate of the
x-intercept is the number where it crosses the x-axis. A line with an x-
intercept of (5,0) crosses the x-axis at the number 5. A line with an x-
intercept of (-5,0) crosses the x-axis at -5.
Which of these coordinates could be a line's x-intercept?
A
(3,1)
B
(0,-12)
С
(-5,4)
(-7,0)
Answer:
D
Step-by-step explanation:
A. G(X) > -6
B. All real numbers
C. G(X) < 0
D. G(X) < 10
Answer:
can't explain how but i'm confident the answer is:
A. G(X) > -6
Write an equation that solves this table.
4
5
6
7
12
0
2
4
6
Answer:
y=2x-8 x=12 y=16
Step-by-step explanation:
the function is y=2x-8
if x=12
y= 2 (12)-8=16
HELP! PLEASEE I’ve been stuck!! I WILL GIVE BRAINLY,,, THANK YOU SM
Answer:
$119
Step-by-step explanation:
08:00 - 12:15 = 4hrs 15mins
13:00 - 17:15 = 4hrs 15mins
Total hours worked = 8hrs 30 mins
$14/hr
14 × 8 = 112
30 mins is half of an hour so 14/2 = 7
$7 for 30 mins
112 + 7 = 119
$119
hope this helps ^^
A sample of experienced typists revealed that their mean typing speed is 87 words per minute and the median typing speed is 73 words per minute. The standard deviation of typing speed is 16.9 words per minute. What is the Pearson coefficient of skewness
Answer:
The Pearson coefficient of skewness is of 0.8284.
Step-by-step explanation:
Pearson skewness:
The skewness of a data set is given by the subtraction of the mean by the median, divided by the standard deviation.
In this question:
The mean is of 87, the median is of 73 and the standard deviation is of 16.9. So
(87-73)/16.9 = 0.8284.
The Pearson coefficient of skewness is of 0.8284.
Factor the polynomial
x^3-3x^2+x
Answer:
Solution given:
x³-3x²+x
taking common
x(x²-3x+1)
is a required answer.
g if we want to calculate a confidence interval of the difference of two proportions what is the standard error (do not pool for this answer)
Answer:
The standard error is [tex]s = \sqrt{\frac{\pi_1(1-\pi_1)}{n_1}+\frac{\pi_2(1-\pi_2)}{n_2}}[/tex], in which [tex]p_1,p_2[/tex] are the proportions and [tex]n_1,n_2[/tex] are the sample sizes.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]1-\alpha[/tex], we have the following confidence interval of proportions.
[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
In which
z is the z-score that has a p-value of [tex]1 - \frac{\alpha}{2}[/tex].
The standard error is:
[tex]s = \sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
For the difference of proportions:
For proportion 1, the standard error is:
[tex]s_1 = \sqrt{\frac{\pi_1(1-\pi_1)}{n_1}}[/tex]
For proportion 2, the standard error is:
[tex]s_2 = \sqrt{\frac{\pi_2(1-\pi_2)}{n_2}}[/tex]
For the difference:
The standard error is the square root of the sum of the squares of each separate standard error. So
[tex]s = \sqrt{(\sqrt{\frac{\pi_1(1-\pi_1)}{n_1}})+(\sqrt{\frac{\pi_2(1-\pi_2)}{n_2}})^2} = \sqrt{\frac{\pi_1(1-\pi_1)}{n_1}+\frac{\pi_2(1-\pi_2)}{n_2}}[/tex]
The standard error is [tex]s = \sqrt{\frac{\pi_1(1-\pi_1)}{n_1}+\frac{\pi_2(1-\pi_2)}{n_2}}[/tex], in which [tex]p_1,p_2[/tex] are the proportions and [tex]n_1,n_2[/tex] are the sample sizes.
The first day of a water polo tournament the total value of tickets sold was $1540. One-day passes sold for $10
and tournament passes sold for $20. The number of tournament passes sold was 23 more than the number of day
passes sold. How many day passes and tournament passes were sold?
Answer:
59 tournament passes and 36 one-day passes were sold.
Step-by-step explanation:
Since the first day of a water polo tournament the total value of tickets sold was $ 1540, and one-day passes sold for $ 10 and tournament passes sold for $ 20, and the number of tournament passes sold was 23 more than the number of day passes. sold, to determine how many day passes and tournament passes were sold, the following calculation must be performed:
20 x 33 + 10 x 10 = 760
20 x 63 + 10 x 40 = 1,660
20 x 58 + 10 x 35 = 1,510
20 x 59 + 10 x 36 = 1,540
Thus, 59 tournament passes and 36 one-day passes were sold.
How do i make a form with a formule
look at the picture bellow
can somebody tell me HOW to do it?
thanks!
You have an equation and a table with the x value given.
Replace x in the formula with the x value in the table and solve for y.
y = x^2 + 1
y = (-3)^2 + 1 = 9+1 = 10
y = (-2)^2 +1 = 4+1 = 5
y = (-1)^2 +1 = 1+1 = 2
y = (0)^2 + 1 = 0+1 = 1
y = (1)^2 +1 = 1+1 = 2
y = (2)^2 +1 = 4+1 = 5
y = (3)^2 +1 = 9+1 = 10
I NEED HELP PLEASEeeee
Answer:
All false jhgffyyhvfftuhvgfy
HELPP!!! ALMOST OUT OF TIME
Answer:
option 2 is correct
Step-by-step explanation:
Another 2 btc please
What is the value of x?
Answer:
Hello! answer: x = 15
Step-by-step explanation:
Here is a visual i created of what the complementary angle would look like!
Resuelve el siguiente ejercicios de porcentaje:
¿32 representa el 64% de qué número?
Answer:
50
Step-by-step explanation:
32/0.64 = 50
Can anyone help me ASAP please
Any set of points in space or on a plane
Answer:
On a plane
Step-by-step explanation:
Answer:
A plane
Step-by-step explanation:
What is 787,452 rounded to the nearest ten thousand?
Answer:
790000
Step-by-step explanation:
Answer:
790,000
Step-by-step explanation: