Answer:
A
Step-by-step explanation:
that is
[tex]2x + 2x[/tex]
Answer:
2x + 2x = 4x
Step-by-step explanation:
3
message
A farmer has two water tanks that drain at a rate of 2.5 gallons per minute. He is considering replacing the existing tanks with new ones, either Model S or Model T. Information about the new tanks is shown below. All tanks, old and new, hold 100 gallons of water and drain at a constant rate.
Select all options that correctly represent the situation.
The equation, y = 4x + 86, represents the Model T tank.
The existing tanks drain the slowest at 2.5 gallons per minute.
The equation, y = -3x + 100, represents the Model S tank.
The equation, y = 2.5x + 100, represents the existing tanks.
The Model S tank drains the fastest at 3 gallons per minute.
The Model T tank drains the fastest at 3.5 gallons per minute.
Answer:
(c) The equation, y = -3x + 100, represents the Model S tank.
(f) The Model T tank drains the fastest at 3.5 gallons per minute.
Step-by-step explanation:
Given
See attachment for models S and T
First, we calculate the equation of both models
Model S
[tex](x_1,y_1) = (0,100)\\\\(x_2,y_2) = (6,82)[/tex]
Calculate drainage rate (m)
[tex]m = \frac{y_2 - y_1}{x_2 -x_1}[/tex]
[tex]m = \frac{82-100}{6-0}[/tex]
[tex]m = \frac{-18}{6}[/tex]
[tex]m = -3[/tex] -- This implies that model S drains at 3 gallons per minutes
The equation is:
[tex]y = m(x - x_1) + y_1[/tex]
[tex]y = -3(x - 0)+100[/tex]
[tex]y = -3(x)+100[/tex]
[tex]y = -3x+100[/tex]
Model T
[tex](x_1,y_1) = (0,100)\\\\(x_2,y_2) = (4,86)[/tex]
Calculate drainage rate (m)
[tex]m = \frac{y_2 - y_1}{x_2 -x_1}[/tex]
[tex]m = \frac{86-100}{4-0}[/tex]
[tex]m = \frac{-14}{4}[/tex]
[tex]m = -3.5[/tex] -- This implies that model T drains at 3.5 gallons per minutes
The equation is:
[tex]y = m(x - x_1) + y_1[/tex]
[tex]y = -3.5(x - 0)+100[/tex]
[tex]y = -3.5(x)+100[/tex]
[tex]y = -3.5x+100[/tex]
From the calculations above, the following options are true:
(c) and (f)
It is required to find which statements are true.
The statements that are true are
The equation, y = -3x + 100, represents the Model S tank.
The Model T tank drains the fastest at 3.5 gallons per minute.
Equation of a line is
[tex]y=mx+c[/tex]
where,
[tex]y=\text{Gallons of water left}[/tex]
[tex]x=\text{Minutes passed}[/tex]
[tex]m=\text{Slope}=\dfrac{\Delta y}{\Delta x}[/tex]
[tex]c=\text{Y intercept}[/tex]
The equation of the line for model S is
[tex]y-100=\dfrac{82-100}{6-0}(x-0)\\\Rightarrow y-100=-3x\\\Rightarrow y=-3x+100[/tex]
The option C is true.
The equation of the line for model T is
[tex]y-100=\dfrac{86-100}{4-0}(x-0)\\\Rightarrow y-100=-3.5x\\\Rightarrow y=-3.5x+100[/tex]
The slope or rate of drain is 3.5 gallons per minute.
So, option F is true.
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Simon has a certain length of fencing to enclose a rectangular area. The function AAA models the rectangle's area (in square meters) as a function of its width (in meters).
Which of these statements are true?
Choose all answers that apply:
Choose all answers that apply:
(Choice A)
A
Greater width always relates to smaller area.
(Choice B)
B
Greater width relates to smaller area as long as the width is less than 10\text{ m}10 m10, start text, space, m, end text.
(Choice C)
C
When there is no width, the area is 20\text{ m}^220 m
2
20, start text, space, m, end text, squared.
(Choice D)
D
When there is no width, the area is 0\text{ m}^20 m
2
0, start text, space, m, end text, squared.
Answer:
When there is no width, the area is 0m²
Step-by-step explanation:
Expressing the area of a rectangle as a function of its width:
Area of a rectangle = Length * width
Since the area of rectangle is related to the width by the multiplication operatkr. We can conclude from the options given that ; if the value of width = 0 ; the the area of rectangular plot = 0
When x :
Area = Length * width
Area = Length * 0
Area = 0
Area = Length * 0
Aea = 0
find the missing term for me plz nd thx
Answer:
6x
Step-by-step explanation:
3*2x=6x
What is the area of this trapezoid?
Answer:
B : 18M²
Step-by-step explanation:
2 Triangles ½base times height then 5 times 3
Answer:
18
Step-by-step explanation:
A = 1/2 (a+b) × h
A= 1/2 (7+5) × 3
A = 18
sorry if I got it wrong
How to simplify 30/72
Choose the equation of the line passed through (-9,1) and is perpendicular to a line that has a slope of 3/2
Answer:
A
Step-by-step explanation:
I think its A if its the muli question I just answered
sorry if I'm wrong!
have a nice day!
Mark is installing a mosaic tile backsplash and the shape of the tiles are shaped like regular octagons. Each tile has a length from side to side of 6 in. Once Mark gets a few pieces on the wall, he realized that there is a gap that the tiles do not cover. What size tile must he get to fill the gaps?
Answer:
square with sides of 6 in
Step-by-step explanation:
Tessellation is the arrangement of shapes in repeated patterns without gaps or overlapping.
Tessellation is usually done with regular polygons. Only three regular shapes can tessellate, these are equilateral triangle, regular square and regular hexagon. For other polygon to tessellate, more than one shape must be used. A octagon can be used to make tessellations if it is used together with a square.
Mark uses tiles with shape of octagon of sides 6 in. To fill the gaps, Mark have to uses a square with sides of 6 in
what is the product of 4x2y and 2xy3
Answer:
8y and 6xy i think
can some one PLS help me with this problem it will be great x+5<-4
Answer:
The answer is x<-9
Step-by-step explanation:
x+5<-4
You move it to the right and you change the sign
This is what I mean: x<-4-5
Then you Calculate the Difference
So it will be: x<-9 which is your answer
In each of the following cases detemin the slop and the y intercept of the line whose equation is given y=2x+5
2y=4x_5
3x+6y=8
x+y=(x_y)
Answer:
Step-by-step explanation:
y = mx +b
m- Slope ; b - y-intercept
1) y = 2x + 5
Slope = 2
y-intercept = 5
2) 2y = 4x - 5
Divide the equation by 2
[tex]\frac{2y}{2}=\frac{4x}{2}-\frac{5}{2}\\\\y = 2x - \frac{5}{2}[/tex]
Slope = 2
y-intercept = [tex]\frac{-5}{2}[/tex]
3) 3x + 6y = 8
6y = -3x + 8
[tex]\frac{6y}{6}=\frac{-3x}{6}+\frac{8}{6}\\\\ y = \frac{-1}{2}x+\frac{4}{3}\\\[/tex]
Slope = -1/2
y-intercept = 4/3
GIVING BRAINLIEST
What should I do if I'm tryna find out the length of a rectangle with a perimeter.
Answer:
Hello, The answer is LxW Dived by 2 sorry for being second
Step-by-step explanation:
I'm in sixth grade so i should know this.
What is the solution to the equation 21 X – 3 = 14? (1 point)
Answer:
17/21
Step-by-step explanation:
[tex]21x - 3 = 14 \\ 21x = 14 + 3 \\ 21x = 17 \\ x = \frac{17}{21} [/tex]
Answer:
x=log,21(14)+3 or x=*3.86682
Step-by-step explanation:
please help!! i'll give brainliest and 5 stars
Answer:
I believe its G. 2x<8
Step-by-step explanation:
An open circle means that it is only less than OR more than, and since the arrow is pointing towards the left, it means that it is less than 8. I really hope this helps!
GIVING BRAINLIEST TO WHO ANSWERS THIS EASY MATH QUESTION FIRST...
A trapezoid has an area of 50 in2. If the bases are 12 and 8 inches, what is the height?
Answer:
height = 5 in
Step-by-step explanation:
Area =h x (b1+ b2)/2
50 = h x (12 + 8)/2
50 = h x 10
h = 5
How much money will be in your bank account after 3 years if you deposit $12,000 and earn 2% interest compounded monthly?
Answer:
$12,741.4
Step-by-step explanation:
If there are no additional deposits, the final balance is $12,741.4, and the the total compound interest is $741.4.
A 2.7 meter ladder leans against a house forming
a 30° angle with the house. Exactly how far is
the base of the ladder from the house?
A.
1.25 m
full
BAN
B.
1.35 m
C. 1.50 m
1.75 m
Answer:
1.35m
Step-by-step explanation:
A 2.7 meter ladder leans against a house forming a 30° angle with the house. Exactly how far is the base of the ladder from the house?
We solve the above question using the Trigonometric function of Sine
cos theta = Opposite/Hypotenuse
From the question
Opposite = Distance of base of the ladder from the house = x
Hypotenuse = Length of the ladder = 2.7m
Theta = 30°
Hence,
sin 30 = x/2.7 m
Cross Multiply
x = sin 30 × 2.7m
x = 1.35m
Option b is correct.
The base of the ladder from the house is 1,35 meters, the correct option is B.
Given
A 2.7-meter ladder leans against a house forming a 30° angle with the house.
Sin angleThe sine of an angle is a function that relates to the sides of a right triangle.
Let the base of the ladder from the house be x.
The height of the base of the ladder from the house is given by;
[tex]\rm Sin\theta =\dfrac{Opposite \ side}{Hypotenuse}[/tex]
Substitute all the values in the formula
[tex]\rm Sin\theta =\dfrac{Opposite \ side}{Hypotenuse}\\\\\rm Sin30=\dfrac{h}{2.7}\\\\h = 2.7 \times sin30\\\\h=2.7 \times 0.5\\\\h=1.35 \ meter[/tex]
Hence, the base of the ladder from the house is 1,35 meters.
To know about trigonometric identities click the link is given below.
https://brainly.com/question/583439
please help!!! dont get it wrong please ;-;
D, because both are mirroring angles
Answer:
D
Step-by-step explanation:
60 and 4x - 20 are vertically opposite angles and are congruent, then
60 = 4x - 20 ← is the equation to solve for x
What is the domain for the set of ordered pairs? (1,5) (3,7) (5,9) (10, 9) *
Answer: i think the domains are
1
,
3
,
5
,
10
yeah i kinda drug my way through this whole lesson because i was lazy and now im kinda in deep water so help pls
Answer:
127.5
Step-by-step explanation:
First, we need to find the value of x
since the two angles are connected to a straight line, their sum will be 180 (degrees)
[tex](2x+7)+(6x-9)=180^{o}[/tex]
add the angles together
[tex]\therefore 8x-2=180[/tex]
add 2 to both sides
[tex]\therefore 8x=182[/tex]
divide out by 8
[tex]\therefore x = 22.75[/tex]
now we must determine which angle has the greater value (not visually)
[tex]angle A = 2x+7[/tex]
[tex]\therefore \angle{A} = 2(22.75)+7[/tex]
[tex]\therefore \angle{A} = 45.5+7[/tex]
[tex]\therefore \angle{A} = 52.5[/tex]
[tex]angle B = 6x-9[/tex]
[tex]\therefore \angle{B} = 6(22.75)-9[/tex]
[tex]\therefore \angle{B} = 136.5-9[/tex]
[tex]\therefore \angle{B} = 127.5[/tex]
[tex]\angle{B}>\angle{A}\ \because\ 127.5>52.5[/tex]
so the answer would be 127.5
A worker wants to save enough money to buy new
headphones, which cost $119. He makes $7 per hour at his
job. He wants to figure out the least number of hours he can
work to have enough money to buy the headphones. Write
an inequality and solve.
Answer:
The least amount of numbers that he can work at his job to have enough for the headphones he wants is 17 hours.
Step-by-step explanation:
To find the number of hours you could divide the cost of the headphones by the amount he earns each hour so you would do $119/ 7 to get 17 and then you could check your answer with multiplication by multiplying 7 * 17 to get 119 which shows that he has to work at least 17 hours to get the headphones he wants.
$119 / 7 = 17
17 * 7 = 119
i need help with number 6 please
Answer:
I think D but im bad at 5hat stuff
Step-by-step explanation:
Which figure can not be mapped onto itself by a rotation of less than 360 degrees?
-square
-trapezoid
-regular hexagon
-regular pentagon
The answer is Trapezoid
What is a Trapezoid?
A trapezoid, also known as a trapezium, is a flat closed shape having 4 straight sides, with one pair of parallel sides. The parallel sides of a trapezium are known as the bases, and its non-parallel sides are called legs. A trapezium can also have parallel legs.
Given data ,
The trapezoid cannot be mapped onto itself
The isosceles trapezoid has no rotational symmetry. There is no way to rotate it such that it can be mapped onto itself.
Square , Regular Hexagon and Regular Pentagon all have rotational symmetry
Hence , Trapezoid cannot be mapped onto itself
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help plz- these were given to me and i was told i could only get help on two-
please help fast like rn if u can
Answer:
x = 125
Step-by-step explanation:
x<125
Step-by-step explanation:
Multiply to remove the fraction, then set equal to 00 and solve.
Mathematics Question!
Mika estimated the sum of 189.27, 15.8, and 11.2 by rounding each number to the nearest whole.
What was Mika’s estimate and what is the actual sum of the numbers?
Enter your answers in the boxes
Mika estimated the sum to be blank. The actual sum is blank
PLEASE DON’T ANSWER IF YOU DON’T NO THE ANSWER!
Answer:
Mika's estimated the sum to be 216. The actual sum is 216.27
Step-by-step explanation:
Mika:
189.27 = 189
15.8 = 16
11.2 = 11
189 + 16 + 11 = 216
Actual:
189.27 + 15.8 + 11.2 = 216.27
help!! help!! help!! help!! help!! help!! help!! help!! help!! USING THE ELIMINATION METHOD SOLVE THESE PLEASEE HELPPPO!!!!!
Answer:
a = 15, b = -14
Step-by-step explanation:
From the question,
a/5 - b/2 = 10
Multiply all through by 10
(a/5)10 - (b/2)10 = 10×10
2a - 5b = 100...................... Equation 1
a - b = 29 ........................ Equation 2
Solving equation(1 ) and equation (2) simultaneously
using elimination method,
multiply equation (2) by 2.
2a - 2b = 58.................... Equation 3
Substract equation 3 from equation 1
2a - 2a -5b-(-2b) = 100-58
0 - 5b+2b = 42
-3b = 42
b = 42/-3
b = -14.
Substitute the value of b into equation 2
a - (-14) = 29
a +14 = 29
collect like terms
a = 29-14
a = 15.
Hence, a = 15, b =-14
PLEASE HELP ME ASAP AND I WILL MARK YOU BRAINLEIST!!!
Answer:
m=25
Step-by-step explanation:
A. m=25
B.15
helppppp! please show your work!
Answer:
90 - 37 will give a solid 53
Step-by-step explanation:
the two sums of A to C to C to B so 22.9(C, B) and 14.1 (A, C)
and know that this angle is 90 degrees, my guess would be to subtract the to given numbers with degrees to earn the sum so 22.9 + 14.1 equals 37
now we add angle degrees and sum and subtract one another,
90 - 37
Please help!
A person invests 10000 dollars in a bank. The bank pays 4.5% interest compounded
daily. To the nearest tenth of a year, how long must the person leave the money in
the bank until it reaches 17600 dollars?
Answer: 12.6 years
Step-by-step explanation: