Answer:
The sound of hammering becomes fainter as Nancy goes into her room because some of the sound waves are absorbed by the walls. Only part of the sound waves coming from the other room comes into her room, so the hammering sounds quieter.
I hope this helps. Good luck ^^
In a class of 25 students, 20 have a brother and 8 have a sister. There are 3 students
who do not have any siblings. What is the probability that a student who has a sister
also has a brother?
Answer: 6/8 or 3/4 or 0.75
Step-by-step explanation:
please help me thanks
Answer:
5[tex]\frac{7}{8}[/tex]
Step-by-step explanation:
You subtract all those distances from 22 to calculate the remaining distance.
22-4[tex]\frac{3}{4}[/tex]= 17[tex]\frac{1}{4}[/tex]
17[tex]\frac{1}{4}[/tex]-5[tex]\frac{1}{8}[/tex]=12[tex]\frac{1}{8}[/tex]
12[tex]\frac{1}{8}[/tex]-0=12[tex]\frac{1}{8}[/tex]
12[tex]\frac{1}{8}[/tex]-6[tex]\frac{1}{4}[/tex]=5[tex]\frac{7}{8}[/tex]
So the answer is 5[tex]\frac{7}{8}[/tex]
(Yes I did these in my head)
whats the answer to this?
Answer:
6cm
Step-by-step explanation:
I will apply equivalent fractions here or enlargement is also allowed
let find the factor,k
3/0.25=k
12=k
to get x
x/0.5=12
x=12*0.5
x=6cm
100 Points Please Help
Compare and contrast a triangular prism and a triangular pyramid. In your response, include the shape and number of bases, and the shape and number of lateral faces.
Answer:
The Sample Response: Both figures have triangle-shaped bases. The prism has 2 bases, but the pyramid has only 1 base. Both figures have 3 lateral faces, but the lateral faces of the prism are rectangles, whereas the lateral faces of the pyramid are triangles. The sides of the pyramid meet at a point.
or
Or Other Response: The bases of both statues are triangle-shaped. The pyramid has only one base, but the prism has two. Both forms have three lateral faces, but the prism's lateral faces are rectangles, whilst the pyramid's lateral faces are triangles.
Step-by-step explanation:
I did this on edge
How many cubic feet are in one cubic yard?
3
9
27
Answer:
c
Step-by-step explanation:
27
From a distance of 1217 feet from a spotlight,the angle of elevation to a cloud base is 43 degrees. Find the height of the cloud base to the cloud base to the nearest foot
Answer:
1134.9 ft
Step-by-step explanation:
CHECK THE ATTACHMENT FOR THE FIQURE
From, trigonometry,
Tan(X) = opposite/ adjacent
Distance from the spotlight = 1217 ft, which is the adjacent sides
Let the height of the cloud= X
, Which is the opposite sides
Then substitute, we have
Tan(43°)= X/1217
(0.9325)= X/1217
X= 0.9325×1217
= 1134.9 ft
Hence, the height of the cloud base to the cloud base to the nearest foot is 1134.9 ft
A silo is a composite of a cylindrical tower with a cone for a roof. What is the volume of the silo if the radius of the base is 30 feet, the height of the roof is 12 feet, and the height of the entire silo is 60 feet?
147,026.5 ft
135,716.8 ft
180,955.7 ft
169,646.0 ft
Answer:
The volume of the silo is approximately 147,026.6 ft.³.
The most correct option is 147,026.5 ft.³
Step-by-step explanation:
The given dimensions of the silo are;
The shape of the silo = Composite figure of tower and roof
The shape of the tower = Cylindrical
The shape of the roof = Cone
The radius of the base of the silo, 'r' = 30 feet
The height of the cone roof of the silo, h₁ = 12 feet
The height of the entire silo = 60 feet
For the cone roof, we have;
The volume of a cone, V = 1/3 × Base area × Height
The volume of the cone roof, V₁ = 1/3×π·r² × h₁
∴ V₁ = 1/3 × π × (30 ft.)² × 12 ft. ≈ 11,309.7336 ft.³
For the cylindrical tower, we have;
The height of the entire silo = The height of the tower + The height of the roof
∴ The height of the tower = The height of the entire silo - The height of the roof
The height of the tower, h₂ = 60 ft. - 12 ft. = 48 ft.
The volume of a cylinder = Area of base × Height
The volume of the cylindrical tower, V₂ = π·r² × h₂
∴ V₂ = π × (30 ft.)² × 48 ft. ≈ 135,716.803 ft.³
The volume of the cylindrical tower, V₂ ≈ 135,716.803 ft.³
The volume of the (entire) silo, Vₙ = V₁ + V₂
∴ Vₙ = 11,309.7336 ft.³ + 135,716.803 ft.³ = 147,026.573 ft.³
The volume of the (entire) silo, Vₙ ≈ 147,026.6 ft.³.
Answer:
147,026.5 ft.³
Step-by-step explanation:
16. Which graph represents the solution to the following system of inequalities?
Answer:
D
Step-by-step explanation:
Convert the following fractions into mixed numbers: 43/4
Answer:
10 3/4
Step-by-step explanation:
Use a calculator
Hope this helps! :)
Answer:
Step-by-step explanation:
mixed fraction 43 - (4 x 10) = 3
i NEED HELP PLS HELP ME
help no links or i will report and i will give the brainliest to the person who answers first
Answer:
45
Step-by-step explanation:
2.5 x 12= 30
1/2 (6) (3)= 9
1/2( 2) (6)=6
30 +9 +6 = 45
What is the mean? If the answer is a decimal, round it to the nearest tenth.
-4 ,4 ,6 ,-7 ,7, 10, 7,9
Answer:
The mean is 4 if im correct.
Answer:
4
Step-by-step explanation:
-4+4+6+-7+7+10+7+9=32
32/8=4
A.45
B.30
C.90
D.180
E.40
F.55
G.130
H.50
Help me with this easy math question, please. I don't understand it, but it's said to be simple. Please and thank you in advance.
Answer:
$850.50
Step-by-step explanation:
Once you find the square footage of the triangle, that being 486 sq ft, you multiply by 1.75, the cost of the deck per sq ft, you get $850.50
Someone, please help me quickly! The question is about probability and I don't remember how to do it since it's been a year... The question is in the picture.
Answer:
im pretty sure 50%
Step-by-step explanation:
(i'm so so so so sooo sorry if it's wrong)
Answer:
im positive its 75%
GIVING BRAINLIEST!!!!!!
Which shape has two pairs of parallel sides?
Answer:
the rectangle
Step-by-step explanation:
9.
Identify the mapping diagram that represents the relation and determine whether the relation is a function.
{(–3, –6), (–1, –6), (5, –6), (8, –6)}
Which of the following is true?
A. choice d.
B. choice a.
C. choice b.
D. choice c.
Answer: B. The Relation Is A Function
C. choice b.
Step-by-step explanation: I got these steps from 2 different sites
For all values of x, y = - 6
Your function:
y = - 6
...............................................................................................................................................
REDUCE MATRIX TO ROW ECHELON FORM: \begin{pmatrix}a&\cdots &b\\ 0&\ddots &\vdots \\ 0&0&c\end{pmatrix}:\quad \begin{pmatrix}8&-6\end{pmatrix}
STEPS: (8, -6)
MATRIX ALREADY IN ROW ECHELON FORM:
(8, -6)
Miranda sold movie DVD’s for $12 and television DVD’s for $9 and has collected $1167 from the sales of both. The number of movies sold is 4 less than 3 times the number of television shows. How many movie DVD’s were sold, and how many television DVD’s were sold?
Answer:
number of be television be 27 and the number of movies would be 50
Step-by-step explanation:
The computation of the number of DVD sold and the number of television sold is shown below:
Let us assume the number of television be x
So, the number of movies would be (3x - 4)
Now according to the question the following equation is made
12(3x - 4) + 9x = $1167
36x - 48 + 9x = $1,167
45x = $1,215
x = 27
So, the number of be television be 27
And, the number of movies would be
= (3x - 4)
= 3(27) - 4
= 50
Can anyone help me on this ixl ?
Answer:
imagine still doing IXL'S in 2021 but the answer should be 250
Step-by-step explanation:
Sydney bought 3 cookies for 1.80 at this price how much would a dozen cookies cost
Answer:
$7.20
Step-by-step explanation:
A dozen = 12, Sydney bought 3 cookies for $1.80, 12 divided by 3 = 4, so 4 times $1.80 = $7.20
hope this helps :D
Answer:
7.20
Step-by-step explanation:
-4x + 7y = 20 y= 3x + 15
Answer:
What’s the question
Step-by-step explanation:
Which of the following expressions is equivalent to −56−13?Select all that apply.
Aubree recorded the grade-level and instrument of everyone in the middle school School of Rock below.
Seventh Grade Students
Instrument # of Students
Guitar 9
Bass 12
Drums 4
Keyboard 7
Eighth Grade Students
Instrument # of Students
Guitar 12
Bass 14
Drums 5
Keyboard 8
Based on these results, express the probability that a seventh grader chosen at random will play an instrument other than drums as a percent to the nearest whole number.
Answer:
88%
Step-by-step explanation:
probability of 7th grader playing other instruments apart from drum = total number of students not playing drum / population of the 7th grade class
total number of students not playing drum = 9 + 12 + 7 = 28
population of the 7th grade class = 28 + 4 = 32
28/32 = 0.875
to express in percentage multiply by 1000 = 87.5%
To round off to the nearest whole number, look at the first number after the decimal, if it is less than 5, add zero to the units term, If it is equal or greater than 5, add 1 to the units term.
88%
What is the square root of 6 - the square root of 20.
Please answer fast!
If S is the midpoint of RT, RS=5x+17, and ST=8x-31, find RS
Triangle DEF is translated five units up. If point D has coordinates (-3, -5) what are the coordinates of D'?
A.
(-3, 0)
B.
(2, -5)
C.
(-3, -10)
D.
(2, -10)
Answer:
A
Step-by-step explanation:
A translation of 5 units up means adding 5 to the y- coordinate
Then
D (- 3, - 5 ) → D' (- 3, - 5 + 5 ) → D' (- 3, 0 ) → A
A water spout is filling a large container with water. After 5 hours the container held 24L of water. After 8 hours the container held 30L of water. At this rate, how much water was in the container at 2 hours?
Answer:
Step-by-step explanation:
This is a direct proportionality. If a water spout is filling a large container with water, hence the time taken to fill the container is directly proportional to the volume v of water. MAthematically;
t = kV
If after 5 hours the container held 24L of water, then;
5 = 24k
k = 5/24
Also if after 8 hours the container held 30L of water
8 = 30k
k = 8/30
To get the rate of the container at 2 hrs
A faraway planet is populated by creatures called Mizjigs. All Mizjigs are
either black-footed or red-footed and either one-headed or two-headed.
Ragon, who lives on this planet, does a survey and finds that her colony of
650 contains 120 black-footed, one-headed Mizjigs; 200 red-footed, two-
headed Mizjigs, and 300 one-headed Mizjigs.
Answer:98
Step-by-step explanation:
Ap3x
Answer:
its 270, just for clarification.
Step-by-step explanation:
y-intercept y=1/4x-2
Answer:
(0,-2)
Step-by-step explanation:
y intercept is when x=0
y=1/4(0)-2
y=-2
(0,-2)
solve for x ?
3(x - 2) = 18
Answer:
X=8
Step-by-step explanation:
3x-6=18
3x=18+6
3x=24
X=24÷3
X=8
Answer:
x=2
Step-by-step explanation:
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