3 yards of fabric for $13.47
At what point on the curve y=sqrt(1+2x) is the tangent line perpendicular to the line 6x+2y=1
The required point of tangency if the curve y=sqrt(1+2x) is the tangent line perpendicular to the line 6x+2y=1 is (4, 3)
Given the curve expressed as y = √1+2x
Also, given the equation 6x + 2y = 1
Get the slope of the line
6x + 2y = 1
2y = -6x + 1
y = -3x + 1
The slope of the line is -3
The slope of the line perpendicular will be 1/3
The equation of the tangent line perpendicular to the line 6x+2y=1, hence;
y = 1/3 x + b
Equate the equation with the equation of the curve;
√1+2x = 1/3 x + b
Square both sides
(√1+2x)² = (1/3 x + b)²
1 + 2x = 1/9x² + 2/3bx + b²
Multiply through by 9
9 + 18x = x² + 6bx + 9b²
x²+ 6bx-18x-9+9b² = 0
x²+(6b-18)x-(9-9b²) = 0
x²+(6b-18)x+9b²-9 = 0
If the discriminant b²-4ac = 0, hence;
(6b-18)² - 4(9b²-9) = 0
36b² - 216b + 324 - 36b²+36 = 0
- 216b + 360 = 0
216b = 360
b = 360/216
b = 5/3
Get the value of x by substituting b = 5/3 into x²+(6b-18)x+9b²-9 = 0
x² + [6(5/3) - 18]x + [9(5/3)² - 9] = 0
x² - [10 - 18]x + [9(25/9)- 9] = 0
x² + 8x + [25- 9] = 0
x² + 8x + 16 = 0
x² + 4x + 4x + 16 = 0
(x - 4)² = 0
x = 4
Substitute x = 4 into the y value
y = √(1 + 2(4))
y = √9
y = 3
Hence the required coordinate is (4, 3)
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You drive 8 miles from your house to your friend's house. Your house is at an elevation of 240 feet. Your friend's house is at an elevation of 680 feet. What is the mean change in elevation per mile?
Todd is attempting to predict how much money his furniture company will make based on the amount raw materials the company currently has at its disposal. The average profit from the sale of 1 piece of furniture can be expressed as 3x + 1 and the average number of pieces of furniture that can be made using the current supply of raw materials can be expressed as 3x - 1. What polynomial function can Todd use to calculate the average profit?
Todd can use the polynomial function [tex]9x^2 - 1[/tex] to calculate his average profit based on the amount of raw materials his furniture company currently has.
Explanation:The question is asking for a polynomial function that Todd can use to calculate the average profit based on the amount of raw materials the company currently has. To find this, Todd will need to multiply the profit from each piece of furniture (3x + 1) with the amount of furniture he can produce (3x - 1). Thus, the polynomial function will be [tex](3x + 1)(3x - 1)[/tex]. After simplifying we get [tex]9x^2 - 1.[/tex] So this is the polynomial function that Todd can use to predict his average profit.
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Alex originally paid $5200 for her car 1 year ago. The value of her car now is $4,420. What is the percent of decrease in the value of her car?
Answer: 15%
Step-by-step explanation:
Given: The original value of car : [tex]\$5,200[/tex]
The value of car after one year : [tex]\$4,420[/tex]
Now, the percent of decrease in the value of her car is given by :-
[tex]\dfrac{\text{Change in price}}{\text{Original price}}\times100\\\\\\=\dfrac{5200-4420}{5200}\times100=15\%[/tex]
Hence, the percent of decrease in the value of her car = 15%
Which description matches the graph of the inequality y ≥ |x + 2| – 3? a shaded region above a solid boundary line a shaded region below a solid boundary line a shaded region below a dashed boundary line a shaded region above a dashed boundary line
Final answer:
The graph of the inequality y ≥ |x + 2| − 3 is represented by a shaded region above a solid V-shaped boundary line that has its vertex at the point (-2, -3).
Explanation:
To determine which description matches the graph of the inequality y ≥ |x + 2| − 3, it is essential to understand the properties of the inequality and the properties of absolute value functions. The absolute value function |x + 2| creates a V-shaped graph with a vertex at the point (-2, 0). When this is adjusted by subtracting 3, the vertex of the V shape is moved down to (-2, -3).
The inequality sign ≥ indicates that we are looking for the region that includes all y-values that are greater than or equal to the function |x + 2| − 3. Therefore, the region of the graph that we are interested in is above this V-shaped graph. The equal part of the inequality ≥ allows us to use a solid boundary line rather than a dashed line, because the points on the graph of y = |x + 2| − 3 are included in the solutions for the inequality.
So, the correct description is a shaded region above a solid boundary line, which represents all the points (x, y) where y is greater than or equal to the value of |x + 2| minus 3.
The measure of two vertical angles are 45 percent and (4x + 1 ). Find the value of x
The formula for the circumference of a circle is C =2 pi r.
Find the circumference of a
circle with a radius of 2 cm.
A. 12.56 cm
B. 12.56 cm^2
C. 6.28 cm
D. 6.28 cm^2
E. 12.00 cm
determine wether the ratios are proportional: 6/36 and 1/6
In the diagram, TRV ≅ VRW. What is the measure of SRT? mSRT = degrees
Great Mountain Park: All day pass: 20.25 Mountain coaster: 4.50 Tilt a Loop: 4.75 Water coaster: 4.00 Fast drop: 3.50 Swing a Ling: 2.75 Merry go Around: 2.50. Prices at the Great Mountain Park are shown in the table Above. You and three friends are going to the park on the weekend. Three of you decide to get the all day pass. The other is just going to ride the Mountain coaster twice, the water coaster once and the fast drop once. IF you pay for everyone, what change will you get back from a 100 bill
Answer:
the answer is
22.75
Please help me please
The sum of two numbers is 15. three times one of the numbers is 11 less than five times the other. find the numbers. write your solution in a complete sentence.
The numbers are -19 and 34.
What is Algebra?A branch of mathematics known as algebra deals with symbols and the mathematical operations performed on them.
Variables are the name given to these symbols because they lack set values. We frequently observe constant change in specific values in our day-to-day situations. But the need to depict these shifting values is ongoing.
Given:
Sum of two number= 15.
let the number be x and y.
So, three times one of the numbers is 11 less than five times the other
3x = 5y- 11
and, x+ y= 15
On solving above two equations
3(15- y) = 5y - 11
45 - 3y = 11-5y
38 = -2y
y= -19
and, x= 34.
Hence, the numbers are -19 and 34.
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Rosa can paint a room in 12 hours. hanna can paint the same room in 9 hours. how long does it take for both rosa and hanna to paint the room if they are working together?
Compare the surface area-to-volume ratios of the moon and mars. express your answer using two significant figures.
The ratio of surface area to volume of the moon is [tex]\boxed{\bf 1.9\text{\bf\ times}}[/tex] of the ratio of surface area to volume of the mars.
Further explanation:
The volume of the spherical shape can be calculated as,
[tex]\boxed{\text{Volume of sphere}=\dfrac{4}{3}\pi r^{3}}[/tex]
The surface area of the spherical shape can be calculated as,
[tex]\boxed{\text{Surface atrea of sphere}=4\pi r^{2}}[/tex]
Here, [tex]r[/tex] is the radius of the sphere.
Calculation:
Step 1:
First we will calculate the ratio of surface area of the sphere to the volume of the sphere.
The ratio of these quantities can be calculated as,
[tex]\begin{aligned}\dfrac{\text{Surface area}}{\text{Volume}}&=\dfrac{4\pi r^{2}}{\dfrac{4}{3}\pi r^{3}}\\&=\dfrac{3}{r}\end{aligned}[/tex]
Therefore, the ratio of the surface area to the volume of the sphere is [tex]\frac{3}{r}[/tex].
Step 2:
Second we will calculate the ratio of surface area of the moon to the volume of the moon.
The radius of the moon is [tex]1738\text{ km}[/tex].
Substitute [tex]r=1738[/tex] in the ratio of the surface area to the volume of the sphere.
[tex]\begin{aligned}\dfrac{\text{Surface area of the moon}}{\text{Volume of the moon}}&=\dfrac{3}{r}\\&=\dfrac{3}{1738}\end{aligned}[/tex]
Step 3:
Third we will calculate the ratio of surface area of the mars to the volume of the mars.
The radius of the mars is [tex]3397\text{ km}[/tex].
Substitute [tex]r=3397[/tex] in the ratio of the surface area to the volume of the sphere.
[tex]\begin{aligned}\dfrac{\text{Surface area of the mars}}{\text{Volume of the mars}}&=\dfrac{3}{r}\\&=\dfrac{3}{3397}\end{aligned}[/tex]
Step 4:
Now compare the ratios of the surface area to volume of moon with ratios of the surface area to volume of mars.
Divide the ratios of the moon by the ratio of the mars to compare.
[tex]\begin{aligned}\dfrac{\text{ratio for moon}}{\text{ratio for mars}}&=\dfrac{1738}{3}\times\dfrac{3}{3397}\\&=\dfrac{1738}{3397}\\&=1.9\end{aligned}[/tex]
Clearly we can see that the ratio surface area to volume of the moon is [tex]\boxed{\bf 1.9\text{\bf\ times}}[/tex] of the ratio surface area to volume of the mars.
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Answer details:
Grade: Middle school
Subject: Mathematics
Chapter: Mensuration
Keywords: Mensuration, volume, surface area, sphere, ratio, moon, mars, comparision, spherical shape, curved surface area, radius of the sphere.
The surface area-to-volume ratio of the Moon is larger than that of Mars.
Explanation:The surface area-to-volume ratio of an object is a measure of how much surface area it has compared to its volume. It is calculated by dividing the surface area of the object by its volume.
To compare the surface area-to-volume ratios of the Moon and Mars, we need to first calculate the surface area and volume of both objects. The Moon has a diameter of approximately 3,474 km and Mars has a diameter of approximately 6,779 km. Using the formula for the surface area and volume of a sphere, we can find the surface area and volume of each planet.
For the Moon:
R = radius = diameter/2 = 1,737 kmSurface area = 4πR² = 4 × π × (1,737 km)^2 = 37,894,902 km²Volume = (4/3)πR³ = (4/3) × π × (1,737 km)^3 = 22,624,974 km³For Mars:
R = radius = diameter/2 = 3,390.5 kmSurface area = 4πR² = 4 × π × (3,390.5 km)² = 144,804,509 km²Volume = (4/3)πR³ = (4/3) × π × (3,390.5 km)³ = 163,155,791 km³Now we can calculate the surface area-to-volume ratios:
Surface area-to-volume ratio for the Moon = Surface area/Volume = 37,894,902 km²/22,624,974 km³ ≈ 1.67 km⁻¹Surface area-to-volume ratio for Mars = Surface area/Volume = 144,804,509 km²/163,155,791 km³ ≈ 0.89 km⁻¹Therefore, the surface area-to-volume ratio of the Moon is larger than that of Mars.
A number to the 11th power divided by the same number to the 8th power equals 216. what is the number?
The number will be 6.
What is Division method?
Division method is used to distributing a group of things into equal parts. Division is just opposite of multiplications.
For example, dividing 20 by 2 means splitting 20 into 2 equal groups of 10.
Given that;
The algebraic expression is,
''A number to the 11th power divided by the same number to the 8th power equals 216.''
Now,
Let a number = x
So, we can formulate;
⇒ x¹¹ / x⁸ = 216
⇒ x ¹¹ ⁻ ⁸ = 216
⇒ x³ = 216
Take cube root both side, we get;
⇒ x = ∛216
⇒ x = 6
Thus, The number will be 6.
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A spinner has 6 parts numbered 1–6. If the result is 1 or 6, a player wins the number times $10.00. On the other hand, if the result is 2–5, then the player loses the number times $5. What can you say about this game?
The probability of winning is higher than that of losing.
The probabilities of winning and losing are equal.
The probability of losing is higher than that of winning.
There is not sufficient information about the game.
2 numbers win
4 numbers lose
so answer would be The probability of losing is higher than that of winning.
Answer:
Option C
Step-by-step explanation:
We are given that a spinner has 6 parts numbered 1-6.
If the result is 1 or 6 then a player wins the number times $10.00.If the result is 2-5 then the player loses the number times $5.
Number of cases when the player wins number times $10.00=1 or 6=2
Number of cases when the player loses the number times $5=2,3,4,5=4
Total number of cases =6
Formula for finding probability
P(E)=[tex]\frac{Number \;of\; favourable\; cases}{Total \; number\; of \; cases}[/tex]
Applying this formula
The probability of wining=[tex]\frac{2}{6}[/tex]
The probability of wining=[tex]\frac{1}{3}[/tex]
The probability of wining=0.33
The probability of losing=[tex]\frac{4}{6}[/tex]
The probability of losing=[tex]\frac{2}{3}[/tex]
The probability of losing=0.66
Hence, the probability of losing is higher than that of winning.
Therefore, option C is true.
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The Smiths want to buy a 9 ft. by 12 ft. carpet and center it in a 15 ft. by 20 ft. room.
If the Smith's want to use square tiles, which are 6 inch on each side, in the area not covered by the carpet, how many tiles will they need?
Answer:
Correct answer is 768 tiles.
The Smiths would need 768 tiles to cover the area not occupied by the carpet in their 15 ft by 20 ft room.
Explanation:To solve this problem, let's first understand the dimensions. The room is 15 ft by 20 ft which gives a total space of 300 ft2. The carpet is 9 ft by 12 ft, so it will cover an area of 108 ft2.
We subtract the area of the carpet from the total area of the room to find the area that needs to be covered with tiles: 300 ft2 - 108 ft2 = 192 ft2.
Each square tile measures 6 inches by 6 inches. We must convert this to feet, as our other measurements are in feet. So, each tile is 0.5 ft by 0.5 ft, giving an area of 0.25 ft2 per tile.
Finally, we divide the total tile area needed (192 ft2) by the area of each tile (0.25 ft2). This gives us: 192 ÷ 0.25 = 768 tiles.
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a triangular piece of stained glass has an area of 6 square inches and a height of 3 inches. what is the length of the base
The length of the base is 4 inch.
It is required to find the length of the base.
What is the triangle?Triangle is a polygon that has three sides and three angles. The sum of the angle of the triangle is 180 degrees.
Given:
Let b be the length of the base.
h=3 inch.
Area = 6 square inches
a=1/2bh
6=1/2b*3
b=4 inch.
Therefore, the length of the base is 4 inch.
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The graph of the function f(x)=|x+3| is translated 5 units down.
What is the equation of the transformed function?
Write an equation in standard form using only integers for a line that passes through the point (5,-6) and is parallel to the line: x=-9 enter a, b, and c where your answer is ax+by=c
Members of a school club are buying matching shirts. They know at least 25 members will get a shirt. Long-sleeved shirts are $10 each and short-sleeved shirts are $5 each. The club can spend no more than $165. What are the minimum and maximum numbers of long-sleeved shirts that can be purchased?
what is the relationship between angle 8 and angle 4?
Answer:
∠8 , ∠4 are Corresponding angle.
Step-by-step explanation:
Given : Two parallel line l ,m and transveral line .
To find : what is the relationship between angle 8 and angle 4.
Solution : We have given two parallel line l ,m and transveral line .
Corresponding angle : The angles in matching corners are called Corresponding Angles.
Corresponding angle are equal.
Therefore, ∠8 , ∠4 are Corresponding angle.
The relation between the angles 8 and 4 is that, they are corresponding angles.
Hence, the correct option is a.
Given that are two lines l and m, intersected by a transversal line,
We need to determine the relationship between angle 8 and angle 4.
According to the definition of corresponding angles we get, that 8 and 4 are a set of corresponding angles,
Corresponding angles :-
Corresponding angles are formed when a transversal intersects two lines. The angles that are in the same position on the intersected lines are called corresponding angles.
Hence angles are corresponding angles.
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Decide which of the two points lies on the graph something line
X+3y=-2
A. -6,6
B. 4,-2
Write the converse, inverse, and contrapositive of the given conditional. then determine the truth value of the statement:
If you play the tuba, then you play an instrument.
Help please! Thank you!
Answer:
Step-by-step explanation:
Given is a statement as
[tex]If you play the tuba, then you play an instrument.[/tex]
We have to write the converse, inverse and contrapositive of the above statement.
If x, then y has converse as if y, then x, inverse as if no y then no x, contrapositive as if no x, then no y.
Using the above we find
Converse: If you play an instrument, then you play the tuba
Inverse: if you do not play the tuba, then you do not play an instrument
Contra positive: If you do not play an instrument, you do not play the tuba.
Nathan is going to a water park today. He knows that the cost of admission is at least $12 per person. If c stands for the cost of admission, which of the following inequalities represents the cost of admission for the water park?
c > 12
c < 12
c ≥ 12
c ≤ 12
Answer:
c $12
If the cost c is at least $12 then it could be equal to 12, or could also be a cost greater than $12. So, c is greater than or equal to 12, expressed as c $12
Step-by-step explanation:
PLS HELP!
which ordered pair represents point C
Evaluate the expession.
9i/3i
A. 3
B. 6
C. 60,480
D 362,874
0.3x + 5.14 = 2.1x - 4.4
The value of x = 5.3.
What is an Equation?An equation is a mathematical statement formed when two algebraic expressions are equated using an equal sign.
The equations are useful in determination of unknown parameters.
The equation is,
0.3x +5.14 = 2.1x -4.4
The equation here formed is made of two expressions,
Expression 1: 0.3x +5.14 and,
Expression 2 : 2.1x -4.4
In the expressions, the variable is x, and the constants are 0.3, 5.14, 2.1, -4.4
Solving for x,
0.3x +5.14 = 2.1x -4.4
Taking variable on the left side, and the constants on the right side.
Taking the like terms on one side,
0.3x - 2.1x = -4.4 -5.14
The negative sign gets cancelled,
-1.8x = -9.54
Dividing 1.8 on both sides.
x = (-9.54 / -1.8)
x = 5.3
The value of x is 5.3.
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In quadrilateral ABCD, diagonals AC and BD bisect one another:
What statement is used to prove that quadrilateral ABCD is a parallelogram?
Angles BAD and ADC are congruent.
Corresponding angles BCD and CDA are supplementary.
Sides CD and DA are congruent.
Triangles BPA and DPC are congruent.