Pregunta completa:
Calcula el volumen de un prisma cuya base es un hexágono regular con un lado de 3 cm y un área lateral de 18√3 cm ^ 2.
Respuesta:
81/2 cm²
Explicación paso a paso:
El hexágono tiene 6 lados
Longitud de cada lado, L = 3 cm
Por lo tanto, perímetro = 3 * 6 = 18 cm
Área lateral, A = perímetro * altura
A = 18√3; P = 18
18√3 = 18 * h
h = 18√3 / 18
h = √3
Área base = perímetro * apotema / 2
Apotema = raíz cuadrada (3² - (3/2) ²)
Apotema = raíz cuadrada (9 - 9/4)
Apotema = (36 - 9) / 4 = raíz cuadrada (27/4) = √27 / 2
Área base = 18 * √27 / 4 = 9√27 / 2 = 9√9 * 3/2 = 27 / 2√3
Volumen = área de la base * altura
Volumen = 27 / 2√3 * √3
Volumen = 81/2 cm²
PLS DO THIS ASAP!!!!! do the ones that are boxed and the ones with the Xs dont do!
This is due in 5 mins pls do!!! will give brainiest and 5 points
Answer:
10 19/24, 4 9/16, 3 11/15
Step-by-step explanation:
15. 15 4/24 - 4 9/24 = 10 19/24
13. 8 3/16 - 3 10/16 = 4 9/16
17. 6 5/15 - 2 9/15 = 3 11/15
Find the value of x if the measures of the interior angles of a pentagon are 5x®, 10X, 10X°, 10x°, and 10X°.
X=_________
Answer:
is 1 i think
Step-by-step explanation:
what is r if r-24=6 jhhjjhjhhjhj
Answer:
r=30
Step-by-step explanation:
r-24=6
r=6+24
r=60
Help plz I am behind in math I was in the hospital!!!
Answer: The answer is 25
Step-by-step explanation:
A triangle has an area of 72 square feet. The height is 12 feet. What is the length of the base (in feet)?
Answer:
6ft
Step-by-step explanation:
we went over this in class
A basketball player makes 80% of free throws. The random numbers below represent 20 trials for a simulation. Let the numbers 0 to 7 represent a made free throw and let 8 to 9 represent a missed free throw. Use this simulation to estimate the probability that the player makes both free throws.
Answer:
65%
Step-by-step explanation:
its not 75
hope this helps! :>
PLEASE PLEASE PLEASE PLEASE HELP MEEEE PLEASE I BEG
Step-by-step explanation:
(4, 8)
they already give you your Y so if you find the middle between the bank and hospital and then find the number for the X theres your answer. That was confusing but im unsure how else to explain it ;-; sorry
A local school needs to paint the floor of its theater room, where the length of the floor, x, is at least 12 feet. The width of the floor is 4 feet less than the length. It will have a stage and a closet, and the remaining area of the floor will be painted. The dimensions are shown in the diagram:
Let A represent the painted area, in square feet, of the floor. Choose the correct equation to solve for area (A).
A = x(x − 4) − 0.5(8)(x − 4) − 4(8)
A = x(x − 4) − (8)(x − 4) − 4(8)
A = x(x − 4) + (8)(x − 4) + 4(8)
A = x(x − 4) + 0.5(8)(x − 4) + 4(8)
Step-by-step explanation:
here .................
Answer:
A. A = x(x - 4) - 0.5(8)(x - 4) - 4(8)Step-by-step explanation:
Total area:
A(t) = x(x - 4)Area of the stage:
A(s) = 0.5(8)(x - 4)Area of the closet:
A(c) = 4(8)Area to be painted:
A = A(t) - A(s) - A(c)A = x(x - 4) - 0.5(8)(x - 4) - 4(8)Correct choice is A
How does making a frequency table or line plot help you see which value occurs most often in a data set?
Answer:
A frequency table and a line plot show which value occurs most often. this is done by labeling every value. The person can clearly see the organized layedout numbers in a frequency table or line plot.
Step-by-step explanation:
If you have any questions feel free to ask in the comments.
A sociologist randomly selects single adults for different groups of three, and the random variable x is the number in the group who say that the most fun way to flirt is in person. Determine whether a probability distribution is given. If a probability distribution is given, find its mean and standard deviation. If a probability distribution is not given, identify the requirements that are not satisfied.
I have attached the complete question.
Answer:
Mean; μ = 1.648
Standard deviation;σ = 0.8610
Step-by-step explanation:
From the image attached, we can see that the probabilities given under the p(x) column are;
0.091
0.334
0.408
0.166
Let's find out if these values give a probability distribution.
ΣP(x) = 0.091 + 0.334 + 0.408 + 0.166
ΣP(x) ≈ 1
Their sum is approximately 1 and they are all between 0 and 1. Thus, it is a probability distribution.
Mean is found by;
μ = ΣxP(x)
From the table attached, x = 0, 1, 2, 3
Thus;
μ = (0 × 0.091) + (1 × 0.334) + (2 × 0.408) + (3 × 0.166)
μ = 1.648
Standard deviation is given by;
σ = √[Σ(x - μ)²•P(x)]
σ = √[((0 - 1.648)² × 0.091) + ((1 - 1.648)² × 0.334) + (2 - 1.648)² × 0.408) + ((3 - 1.648)² × 0.166)]
σ = 0.8610
Does anyone know how to do this
Answer:
the reason is they are equal to each other because they are both right angle triangle
Share 60 in the ratio 6:4
Answer:
36:24
Step-by-step explanation:
6+4=10
60/10=6
6*6:4*6
=36:24
The mathematical expression 2 ∈ V means:
It could be nonsense without any more context…
But more likely than not, V is understood to be some set of numbers, in which case the statement "2 ∈ V" means "2 belongs to the set V".
Need help! Have a good day
Answer:
Use the website www.bartley.com !!! I has helped me a lot and its actual teachers/tutors who answer your questions in about 30 minutes :)
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
y= 1/2x +8
hope this helps
8 more than twice a number is 18.
Answer:
18 + (18 more than) 2x (twice a number) = (is) 8
18+2x=8
2x=-10 (subtract 18 from both sides)
x=-5 (divide both sides by 2)
not my work
(I BEG YOU HELP ME TUTORS! ITS A MULTIPLE CHOICE ILL GIVE U BRAINLY)
Answer:
ans= (2)
Step-by-step explanation:
y=x²-1 is the only quadratic function there
1 is a linear function
3 is a cubic function
4 is a a constant function
Find area 6ft 8ft 4ft 5ft 5ft 4ft
Answer:
We need more then just the numbers. May you please provide a screenshot?
ignore the ones that are chosen i didn't mean to press it, someone help
Whats:
1+1
I need help immediately, please.
I'm struggling and freaking out.
Answer as soon as possible.
Answer:
2
Step-by-step explanation:
hdjxjdbdjdnekzneisbd
Answer:
1+1=2
Step-by-step explanation:
lol, i hope this helped.
brainliest please? :)
PLEASE I WILL GIVE EXTRA POINTS AND BRAINLIEST I PROMIS!!!!!!! I AM DESPERATE PLEASE I AM BEGGING YOU!!!!!!!!!!!!!!!!!!!!!!!
Answer:
If you comment fractions I will do them!
Step-by-step explanation:
Across:
A = 46
E = can't see the fraction
H = 2111
I = 64
J = 29
L = can't see the fraction
P = 55005
R = can't see the fraction
S = 21
T = 49
U = 308
V =129
X = can't see the fraction
Y = 4008
Z = 15
BB = 375
EE = 65
FF = 16
GG = 64
Down:
B = 600
C = can't see the fraction
D = 316
G = can't see the fraction
H = can't see the fraction
K = 9520
L = 15010
N = 299
O = 59
Q = 518
T = 4116
U = 333
V = 1006
W = 189
AA = 55
CC = 71
DD = 56
Question 7: Find the value of x. The numbers below are in degrees.
140
S
50
20
Given:
A figure.
To find:
The value of x.
Solution:
Draw two parallel lines as shown in the below figure.
If a transversal line intersect two parallel lines, then alternate interior angles are same.
[tex]a=20[/tex] (Alternate interior angle)
[tex]d=b[/tex] (Alternate interior angle) ...(i)
The value of angle d is
[tex]d=50-a[/tex]
[tex]d=50-20[/tex]
[tex]d=30[/tex]
Using (i), we get
[tex]b=30[/tex]
If a transversal line intersect two parallel lines, then same sides interior angles are supplementary angles.
[tex]c+140=180[/tex]
[tex]c=180-140[/tex]
[tex]c=40[/tex]
Now,
[tex]x=b+c[/tex]
[tex]x=30+40[/tex]
[tex]x=70[/tex]
Therefore, the value of x is 70.
The diameter of a circle is 12 cm. Find its circumference in terms of pi
Answer:
37.68
Step-by-step explanation:
to get radius divide diameter by 2.
formula for circumference is 2×r×pi.
since we already have the diameter we don't need to ÷ by 2 to get the radius because then we would have to multiply it back again.
pi=3.14.
12×3.14=37.68.
Can I please have Brainliest?
Find the volume of the rectangular prism.
45 cm
15 cm
25 cm
Answer:
16875cm³
Step-by-step explanation:
45x15x25= 16875cm³
plz mark me as brainliest.
Answer:
15 cm trust me its right because I've don't this question in school
I NEED HELP PLS!! it shouldnt be too hard bc im in 6th grade
Answer:
2x + 1
Step-by-step explanation:
That person added everything together that was shown which is incorrect. You shouldn't add the 12x + 3 as that should be the end result. You add 3x + 3x + 4x + 2 to get 10x + 2. You then subtract that by 12x +3 which is 2x + 1
Resuelve: 6 (3n + 6) - 6 = -3 (n + 4)
Answer:
n = -2
Step-by-step explanation:
Dame lo más inteligente
( give me brainllest)
Compare the function ƒ(x) = 3x − 1 2 to the function shown in the graph. Which statements are correct?
Answer: 3(x−4)
Step-by-step explanation: Hope this help :D
Answer:
On usatestprep the answer for f(x)=3x-(1/2) is...B,D, and E.
Step-by-step explanation:
PLSS HELP THE TEACHER IS ASKING FOR MY ANSWERS CUZ I WAS SUPPOSED TO DO IT AND I NEVER WAS PREPARED PLSSS HELP IM NEXT AND CAN SOMEONE PLS TELL ME WHAT TO DRAW LIKE SHADE? A PIC OF EVERYTHING SHADED AND DRAWN WOULD BE RLLY NICE TYSM HAVE A GOOD DAY! BUT PLS HELPP
Answer:
shading,
Step-by-step explanation:
do shading to the fraction supposed to be, eg: 1\4 here we have four parts divided and 1 is to be shaded as it gives 1 out of 4 okay? or 2\8 here in 8 divided parts only shade 2 as it's given. I hope it's right!!
Factor the following :
Answer:
(6x - 7y)(6x + 7y)
Step-by-step explanation:
36x² - 49y² ← is a difference of squares and factors in general as
a² - b² = (a - b)(a + b) , then
36x² - 49y²
= (6x)² - (7y)²
= (6x - 7y)(6x + 7y)
Answer:
(6x + 7y)(6x - 7y)
Step-by-step explanation:
36x² - 49y²
= (6x)² - (7y)²
= (6x + 7y)(6x - 7y)
In this question we used the identity-
a² - b² = (a + b)(a - b)
If the standard deviation of a data set were originally 8, and if each value in
the data set were multiplied by 1.75, what would be the standard deviation of
the resulting data?
A. 6
B. 8
C. 14
D. 2
Can someone please help me
Answer:
C/7 = 20
Step-by-step explanation:
The sports shop has 12 part-time employees and 68 full-time employees. What percentage of the employees at the sports shop work part-time?
Answer:
15% of the employees at the sports shop work part-time.
Step-by-step explanation:
In order to find the percentage of the employees at the sports shop that work part-time, first you need to find the total amount of employees:
12+68=80
Now, you have to divide the amount of employees that work part-time by the total amount of employees and multiply that for 100:
%of employees working part-time=(12/80)*100=0.15*100=15%
According to this, the answer is that 15% of the employees at the sports shop work part-time.