Find the area of four walls of a room (Assume that there are no doors or windows) if its length 12 m., breadth 10 m. and height 7.5 m. ?
Answer:
Refer to the attached file
Hope it helps..
Have a great day : )
What is -6x+4(-2x+8y)-2y+4
Answer:
-14x + 30y + 4
Step-by-step explanation:
-6x + 4(-2x + 8y) - 2y + 4
take out the parentheses
4(-2x + 8y) = -8x + 32y
-6x - 8x + 32y - 2y + 4
solve for the x's then y's
-6x - 8x = -14x
32y - 2y = 30y
you are done
-14x + 30y + 4
Match these items.
1 .
friction
a force causing rotation
2 .
efficiency of lever
highly efficient 1st class lever
3 .
torque
output divided by input
4 .
streamlined shaped
reduces friction on airplane
5 .
equal-arm balance
loss of energy
Answer:
4 streamlined shapes reduces friction on airplane
A streamlined shape reduces friction on an airplane. The correct statement is 4.
What is decision-making?The process of making choice is by identifying the correct decision, gathering information, and assessing alternative solutions.
To determine the correct statement will be
1. Friction is a force causing rotation.
The statement is incorrect because the cause of rotation is force.
2. Efficiency of the lever is a highly efficient 1st class lever.
The statement is incorrect.
3. Torque is output divided by input.
The statement is incorrect because the output divided by input is known as productivity.
4. Streamlined shape reduces friction on an airplane.
The statement is correct.
5. Equal-arm balance loss of energy.
The statement is incorrect.
More about the decision-making link is given below.
https://brainly.com/question/3369578
#SPJ2
11. Solve for 8.k = 36.1.8
Answer:
k= 8.1
Step-by-step explanation:
hello :
8.k = 36.1.8
k= 36.1.8/8
k= 8.1
What is the distance between the points (-4,5) and (8,9)
5) Choose the graph which represents the solution to the inequality:
5<-5+2x
Where is the Graph.
Step-by-step explanation:
LOL
besties i need help again btw it's not -48 hdhd
Step-by-step explanation:
-6 / 24/3
= -6 x 3/24
= -18/24
= -6/8
= -3/4
Cole wants to buy carpet to cover his whole living room, except for the tiled floor. The tiled floor is 4 5 6 ft by 2 1 3 ft. Find the area the carpet needs to cover. Solve on paper. Then check your work on Zearn. 711 1 3 tiled floor The carpet needs to cover ft2.
Answer:
[tex]Area = 49\frac{25}{36}[/tex]
Step-by-step explanation:
Given
Tile
[tex]Length = 4\frac{5}{6}[/tex]
[tex]Width = 2\frac{1}{3}[/tex]
See attachment for dimension of the floor
Required
Determine the area covered by the carpet
From the attachment, the dimension of the floor is:
[tex]Length = 12\frac{1}{4}[/tex]
[tex]Width = 5[/tex]
Calculate Area
[tex]Area = Length * Width[/tex]
[tex]Area = 12\frac{1}{4} * 5[/tex]
[tex]Area = 61\frac{1}{4}[/tex]
The area of the tiles is:
[tex]Area = 4\frac{5}{6} * 2\frac{1}{3}[/tex]
[tex]Area = \frac{29}{6} * \frac{7}{3}[/tex]
[tex]Area = \frac{203}{18}[/tex]
[tex]Area = 11\frac{5}{18}[/tex]
So, the carpet area is:
[tex]Area = Floor\ Area - Tile\ Area[/tex]
[tex]Area = 61\frac{1}{4} - 11\frac{5}{18}[/tex]
To improper number
[tex]Area = \frac{245}{4} - \frac{208}{18}[/tex]
Take LCM
[tex]Area = \frac{2205 - 416}{36}[/tex]
[tex]Area = \frac{1789}{36}[/tex]
[tex]Area = 49\frac{25}{36}[/tex]
1,5,9,13. what's the 8th 13th 17th and 23rd term
Answer:
8th 29
13th 53
17th 69
23rd 91
Which unit rate is equivalent to 13 miles per gallon? Pls help!!!
Answer:
twenty-six miles over two gallons because the proportion for the original 13 miles to one gallon would be written 13/1 and, doing the same thing to the top and bottom, i multiplied by 2 and got 26/2
Find the equation of the line.
Answer:
Step-by-step explanation:
Which answer choice correctly represents an algebraic expression for the quotient of a number and 9?
A. 9j
B. j ÷ 9
C. j – 9
D. 9 + j
HELP ME!!!!!!!!!! ANSWER 2-5
[tex]\huge\underline\mathbb\purple{ANSWER\::}\\\\[/tex]
2. (4,0)
3. (6,1)
4. (-1,-3)
5. (2,0)
6. (-3,0)
[tex]\\\\\\[/tex]
HOPE IT HELPS
PLEASE MARK ME BRAINLIEST ☺️
A line with a slope of 1 passes through the point (8,6). What is its equation in slope-intercept form?
Write your answer using integers, proper fractions, and improper fractions in simplest form.
Answer:
y=x-2
Step-by-step explanation:
y-y1=m(x-x1)
y-6=1(x-8)
y-6=1x-8
y=1x-8+6
y=1x-2
The quotient of 50 and 5 subtracted from 20 (move numbers and symbols to the line to show the phrase as a numerical expression)
The value of the quotient of 50 and 5 subtracted from 20 that can be given as 10.
What is subtraction?It simply means to deduct something from the object or number of group, place, etc. Subtraction means to take away from the group or a number of objects.
Firstly, we have the quotient of 50 and 5. This can be written as
[tex]\dfrac{50}{5}[/tex]
And we know that this can be written as 10.
Now we subtract it from 20. Then we have the number 20 and we subtract 10 from it. Then it can be written as
20 - 10
On subtracting, we have
20 - 10 = 10.
More about the subtraction link is given below.
https://brainly.com/question/4319655
(3+7i)+(-5+2i)-(-7+6i)
HEP PLSSS
Given f(x)=3x2+4x and g(x)=2x2−x+1.
What is (f+g)(x)?
5x2+3x+1
−x2−5x−1
6x2−4x+1
x2+5x−1
6а + 9 = 33
Need to solve
Answer: a=4
Step-by-step explanation:
6a+9=33
Subtract
6a=24
Divide
a=4
Answer:
a=4
Step-by-step explanation:
[tex]6a+9=33\\33-9=24\\24\div6=4\\a=4[/tex]
work out 11. 28- 2.843
Answer:
25.157
Step-by-step explanation:
28-2.843=25.157
what is the diameter of the circle: (x-4)^2+(y-2)^2=9 ?
Answer:
The diameter is 6
Step-by-step explanation:
ASAP!: can anyone solve three times the difference of Federico age and 4 increased by 7 is greater than 37 what are possible values of Federico age?
Answer:
Federcio's age possible values are those that are greater than 14 i.e 15, 16, 17 and so on
Step-by-step explanation:
Let Federico's age = x
Three times the difference of Federico’s age, and 4 means:
3(x - 4)
Increased by 7:
3(x - 4) + 7
Is greater than 37:
3(x - 4) + 7 > 37
Solving the inequality:
3x - 12 + 7 > 37
3x - 5 > 37
3x > 37 + 5
3x > 42
x >42/3
x > 14
Federcio's age possible values are those that are greater than 14
What is the missing side (x)?
Answer:
5ft
Step-by-step explanation:
A point is chosen at random on AK. What is the probability that the point will be on overline CD ? Don't forget to reduce.
Answer:
[tex]P(CD) = \frac{1}{10}[/tex]
Step-by-step explanation:
Given
[tex]AK = 10[/tex]
See attachment for line AK
Required
Probability of choosing CD
From the attachment:
[tex]CD=D-C[/tex]
[tex]CD=3 - 2[/tex]
[tex]CD = 1[/tex]
So:
[tex]P(CD) = \frac{CD}{AK}[/tex]
[tex]P(CD) = \frac{1}{10}[/tex]
Given the 2 similar triangles, what is the length of LK?
Answer:
7.5
Step-by-step explanation:
the term similar triangles means they have the same angles and the same scale factor so if we look at rs and jl you see they are 12 and 6. thats is a scale factor of .5 so you take 15 and multiply it by .5 or you can divide it by 2.
Which equation represents an inverse variation?
Answer:
C. y=3/x
Step-by-step explanation:
hope this helps, sorry if I am wrong
The roof of a clock tower is a square pyramid. Each side of the base is 16ft long. The slant height is 22ft. What is the lateral area of the roof?
Answer:
The area of the pyramid is 703.97 ft²
Step-by-step explanation:
The lateral area of a right square pyramid is given as;
[tex]A_l =a \sqrt{a^2 + 4h^2}[/tex]
where;
a is base length
h is the vertical height of the pyramid
The vertical height of the pyramid is calculated as follows;
the vertical height passes through the center of the base.
half of the base = 8 ft
the slant height = hypotenuse side of the right triangle = 22 ft
Thus; h² = 22² - 8²
h² = 420
h = √420
h = 20.493 ft
The area of the pyramid is calculated as;
[tex]A_l =a \sqrt{a^2 + 4h^2}\\\\A_l =16\sqrt{16^2 + 4(20.493)^2} \\\\A_l = 703.97 \ ft^2[/tex]
Therefore, the area of the pyramid is 703.97 ft²
The use of the internet is constantly growing. How many randomly selected adults must be surveyed to estimate the percentage of adults in the United States who now use the internet? Assume we want to be 99% confident that the sample percentage is within 2 percentage points of the true population percentage.
a) Assume that nothing is known about the percentage of adults using the internet.
b) Assume it was estimated that 72% of adults in the United States use the internet.
Please help I need to get this done and I am confused
Answer:
Step-by-step explanati
7,5
6,8
2,4
1,3
Three cities form a triangle. Tom measures the distances between the three cities on a map. The distances between the three cities are 45 miles, 56 miles, and 72 miles. Is the triangle formed by the three cities a right triangle?
Answer:
Nope. Does not satisfy pythagoras theorem
Step-by-step explanation:
72 squared does nit equal 45 squared plus 56 squared
Which of these linear equations best describes the given model? Choose 1 answer: Choose 1 answer: (Choice A) A \hat y=10x+20 y ^ =10x+20y, with, hat, on top, equals, 10, x, plus, 20 (Choice B, Checked) B \hat y=20x+20 y ^ =20x+20y, with, hat, on top, equals, 20, x, plus, 20 (Choice C) C \hat y=-20x+20 y ^ =−20x+20y, with, hat, on top, equals, minus, 20, x, plus, 20 Based on this equation, estimate the score for a student that spent 3.83.83, point, 8 hours studying.
Question:
Which of these linear equations best describes the given model? Choose 1 answer:
Choose 1 answer:
A [tex]\hat y=10x+20[/tex]
B [tex]\hat y=20x+20[/tex]
C [tex]\hat y=-20x+20[/tex]
Based on this equation, estimate the score for a student that spent 3.8 hours studying.
Answer:
[tex]\hat y = 20x +20[/tex]
Score of 96 for studying 3.8 hours
Step-by-step explanation:
Given
See attachment for graph
From the straight line of trend, we have:
[tex](x_1,y_1) = (0,20)[/tex]
[tex](x_2,y_2) = (2,60)[/tex]
The slope (m) is:
[tex]m = \frac{y_2 - y_1}{x_2 - x_1}[/tex]
[tex]m = \frac{60 - 20}{2 - 0}[/tex]
[tex]m = \frac{40}{2}[/tex]
[tex]m = 20[/tex]
The equation is calculated using:
[tex]\hat y = m(x - x_1) + y_1[/tex]
This gives:
[tex]\hat y = 20(x - 0) +20[/tex]
[tex]\hat y = 20(x ) +20[/tex]
[tex]\hat y = 20x +20[/tex]
Solving (b): When study hours is 3.8
This means that [tex]x= 3.8[/tex]
So:
[tex]\hat y = 20x +20[/tex]
[tex]\hat y = 20 * 3.8 + 20[/tex]
[tex]\hat y = 96[/tex]