The mass of the ball is 278.1 g, the material used to make the ball must be brass which having density of 8.6 g/cm³.
How to find mass of the ball ?To determine the material used to make the ball, we need to first calculate the volume of the ball.
The volume of a sphere with radius r is given by:
V = (4/3) * π * r^3
Plugging in the given values, we get:
V = (4/3) * π * (2 cm)^3
= (4/3) * π * 8 cm^3
= (4/3) * 8π cm^3
= 32π cm^3
We can then use the density of each material (given in g/cm³) to calculate the mass of the ball if it were made of that material:
Copper: 8.3 g/cm³ * 32π cm³ = 266.4 g
Brass: 8.6 g/cm³ * 32π cm³ = 275.2 g
Iron: 7.8 g/cm³ * 32π cm³ = 250.4 g
Since the mass of the ball is 278.1 g, the material used to make the ball must be brass.
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I submitted y=13 I wouldn't work so what can it be?
Answer:
[tex]\huge\boxed{\sf y = \pm 13}[/tex]
Step-by-step explanation:
Given that,
y² = 169
Take sq. root on both sides
√y² = √169
y = ±13So,
y = 13 OR y = -13
[tex]\rule[225]{225}{2}[/tex]
Answer:
b) y = + 13
Step-by-step explanation:
Now we have to,
→ find the required value of y.
The problem is,
→ y² = 169
Let's solve the problem,
→ y² = 169
→ y = √(169)
→ [ y = + 13 ]
Hence, the answer is + 13.
Find the y-intercept of the line y=1/3x–1.
Write your answer as an integer or as a simplified proper or improper fraction, not as an ordered pair.
Answer:
-1
Step-by-step explanation:
This line is already in slope, intercept form of y = mx + b <===='b' is the y-axis intercept = -1
if your school uses Desmos pls respond
50 points
Answer:
I use desmos!
Step-by-step explanation:
What is the quotient? 8^2-81/(x-3)(x-9)
The quotient of the given division is (x + 9).
What is synthetic division?
Synthetic division is a technique for performing manual Euclidean division of polynomials in algebra that requires less writing and calculation than long division. Although it is typically taught for division by monic linear polynomials, the technique can be applied to division by any polynomial.
Given: x^2 - 81 / (x - 9)
We have to find the quotient for the given division.
We can find the quotient using synthetic division.
x + 9
[tex]\sqrt[x-9]{x^2-81}[/tex]
- x^2 - 9x
_______________
9x - 81
- 9x - 81
_____________
0
Hence, the quotient of the given division is (x + 9).
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Karen was trying to factor 6x^2+106x 2 +106, x, squared, plus, 10. She found that the greatest common factor of these terms was 222 and made an area model:.
The width of area model is 2x units
What is area ?Area is the entire amount of space occupied by the shape of an object or a flat (2-D) surface.
According to the given information :
The given expression is [tex]6x^{2}+106x[/tex]
We need to find the width of area model , so The above expression represents the area of rectangle A
By making the factors of the above expression
A = [tex]6x^{2}+106x[/tex]
= [tex]2x( 3x + 53 )[/tex]
Area of rectangle is defined as
A = l × b
where l is length and b is width
In the above expression
b = 2x
l = 3x + 53
So , The width of area model is 2x units
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Please answer this question
The inequality model of given problem is |5x-4|≤80.
What is inequality model?In mathematics, an inequality is a connection between two expressions or values that are not equal to each other. In mathematics, an inequality depicts the connection between two non-equal values in an algebraic expression. Inequality signs can indicate that one of the two variables is larger than, greater than or equal to, less than, or less than or equal to another value. An inequality is a mathematical connection between two expressions that is represented by one of the following symbols:: "less than or equal to": "less than": "not equal to"
Here,
The provided problem's inequality model is |5x-4|≤80.
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Need help with part A
Answer: 0.4
Step-by-step explanation:
The question is asking for the probability to own a dog.
40% own a dog.
If you add all of the percentages you get 100%
40/100
=0.4
The probability is 0.4 times to randomly select a resident that only owns a dog.
The stereo normally priced at $299 is on sale for 15%off. Find the discount and the sale price.
Answer: Sale price: $254.15 , Discount: $44.85
Step-by-step explanation:
15% off indicates that the stereo will now cost 85% of what it did originally:
$299(100% – 15%) = $299(85%)
Decimalizing the percentage results in = $299(0.85) = $254.15
Discount= $299 - $254.15 = 44.85
Graph the line that has a slope of -7/6 and includes the point (0, 1)
Answer: (6,-6),(0,1) plot these 2 points
Step-by-step explanation:
According to the American Veterinary Medicine Association, 72% of households in Wyoming owned a pet in 2018. There were 278,595 households in Wyoming in 2018. How many of those households owned a pet? Round to the nearest whole number.
If according to the American Veterinary Medicine Association, 72% of households in Wyoming owned a pet in 2018. There were 278,595 households in Wyoming in 2018. The number of those households that owned a pet is: 200,588.
How to find the number of household who owned a pet?We would be making use of the given data to find the number of household that owned a pet.
Using this formula
Number of household with pet = Percentage of household × Number of household
Let plug in the formula
Number of household with pet = 72% × 278,595
Number of household with pet = 200,588 household
Therefore the Number of household with pet is 200,588.
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Which of the following will be perpendicular to the line y = -1/4x + 10? Select all that apply. Please explain your answer choices.
a. y = 4x + 2
b. y = 1/4x - 9
c. y = -4x + 10
d. y = 4x - 5
Perpendicular lines have slopes that are opposite signs and reciprocals.
Since the line y = -1/4x + 10 has a slope of -1/4, the slope of the perpendicular line will be + 4/1 or 4. So any line with a slope of 4 will be perpendicular to y = -1/4x + 10.
This means A and D will be your answers.
..
gujhtuvvvfgvbbhtdxccgyujjgttggg
Answer:
do you need help with anything if not hello
Step-by-step explanation:
Question is in picture
The length of line segment LB is equal by definition of bisector to 6 feet.
How to determine the missing length of a geometric system of two right triangles
In this question we find a geometric system with two right triangles generated by bisector AL, that is, a side that divides line segment CL into two segments of equal length. Then, the length of line segment LB is equal to:
CL = LB
Where CL and LB are measured in feet.
If we know that CL = 6 ft, then the length of line segment LB is 6 feet.
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100 POINTS ILL GIVE BRAINLIEST PLEASEE
The required proof is completed by proving that triangle FCA and triangle DBE are congruent hence sides FA ≅ ED
What is congruency of triangle?Triangles are said to be congruent when the sides and angles equal in accordance to to the triangle congruency rules
Some of the rules include
Side - Side - Side = SSSSide - Angle - Side = SASAngle - Side - Angle = ASA Angle - Angle - Side = AAS Hypotenuse and one leg = HLIn the problem, since FG can safely be extended to FC also EG to EB so that
FC ≅ EB this is one side of the triangle
Similarly, AB can be extended to AC and DC to DB such that
AC ≅ DB another side of the triangle
Given that < C ≅ < B the required sides for congruency by the SAS rule is completed and thus FA = ED
The SAS rule have it that when two sides and the included angle of angle of a triangle is equal to that of another triangle then all the sides and the angels are equal therefore they are congruent triangles
since ΔFCA ≅ ΔEBD the corresponding sides are equal to each other
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I need some serious help
Answer: y=7x-23
Step-by-step explanation:
y-y1=m(x-x1)
Plug them in:
-2-12=m(-2-5)
-14=m(-7)
m=7
y=7x+b
Plug in a coordinate:
12=7(5)+b
12=35+b
-23=b
y=7x-23
Charmaine wanted to study how the area of a rectangle changes with the length if its width is fixed. She computed the areas of several rectangles that have the same width and different lengths. She then plotted the results and connected them with a line, as shown below. The graph shows the area (incm^2 ) versus the length (in cm).
Find the range and domain of the functions
The Range of the length of a rectangle having fixed width and area increasing linearly is = {y ∈ R : c ≠ 0 or y ≠ 0}, and Domain = All real numbers,
What is a rectangle?An enclosed 2-D shape called a rectangle has four sides, four corners, and four right angles (90°). A rectangle has equal and parallel, opposite sides. Since a rectangle is a two-dimensional form, it has two dimensions: length and width. The rectangle's longer side is its length, while its shorter side is its breadth.
Given:
The width of the rectangle is fixed, and the length is changing.
The line is formed when connected through the graph.
The area of the rectangle = [tex]length\times width[/tex]
So when the width is fixed, the area would increase linearly and directly proportional to length.
Calculate the range of function y = cx,
y = area as shown in the graph, x is the length, and width is constant c.
Range = {y ∈ R : c ≠ 0 or y ≠ 0}
Calculate the domain,
It can be any real number, as the area can't be negative.
Domain = All real numbers.
Therefore, Range = {y ∈ R : c ≠ 0 or y ≠ 0}, and Domain = All real numbers.
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PLEASE HELP! What can you conclude about the triangles? *Hint: What is congruent and how can you prove it?
The triangle's conclusion is that the two triangles are equal because they are congruent.
What are Congruent triangles?If each of the three corresponding sides and each of the three corresponding angles in two triangles equals one another, then the two triangles are said to be congruent.The two triangles generated in the illustration are triangles GHJ and GKM.To substantiate the triangle GHJ = GKMAngle JGH=Angle KGM ( opposite angles)angle K equals angle H (alternating angles)Angle H = thus Angle JWe can say that the triangles are congruent because the three angles of each triangle are equal.To Learn more About triangle's conclusion refer To:
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Juan had $3. 50. Julian had 2 1/2 time a much a juan how much money did julian have
We know that Julian has $8.75 using mathematical operations.
What are mathematical operations?A mathematical "operation" is the process of calculating a value utilizing operands and a math operator.
The supplied operands or integers must adhere to a set of predefined rules that are connected to the symbol of the math operator.
The five basic operations in mathematics are addition, subtraction, multiplication, division, and modular forms.
So, we know that:
Juan has $3.50.
Julian has 2½ times Juan.
So, the money Julian has is:
First, calculate 2½:
2½
4+1/2
5/2
2.5 times
The money Julian has is:
3.50 * 2.5
$8.75
Therefore, we know that Julian has $8.75 using mathematical operations.
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The half-life of Radium-223 is 11.43 years. What is the annual decay rate? Express the result to four decimal places.
Express the annual decay rate as a percentage to two decimal places.
%
Answer:
Below
Step-by-step explanation:
e^(-kt) = 1/2 when t = 11.43
so k = .060642797
e^ (- .060642797 * 1) = .9411 <==== is left after one year
which means the decay in one year is
1 - .9411 = .05884 = 5.88% per year
2x + 3 (4x - 3) = 8 - 3x
Answer:
the value of x is 1
Step-by-step explanation:
2x+3(4x-3)=8-3x
2x+12x-9=8-3x
2x+12x+3x=8+9
17x=17
17x/17=17/17.......... divide both side by 17 to get the value of x
x=1......so, the value of x is 1
Population The expression n 25 gives the population (in thousands) of an animal after 5 years, where n is the starting population in thousands. Find the populatio
5 years if the starting population is 3,000
The population after 5 years if the starting population is 3000 is 75,000.
What is an expression?An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
Example: 2 + 3x + 4y = 7 is an expression.
We have,
The population after 5 years.
= n x 25
Where n is the starting population in thousands.
The expression can be considered as.
= nx²
Where x is the number of years.
Now,
n = 3000
The population after 5 years.
= 3000 x 25
= 75,000
Thus,
The population is 75,000.
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Two buses leave a station at the same time and travel in opposite directions. One bus travels 18 km/h faster than the other. If the two buses are 1722 kilometers apart after 7 hours, what is the rate of each bus?
Answer:
66mph i belive
Step-by-step explanation:
PLEASE I NEED HELP!!!!
Step-by-step explanation:
as you wrote correctly, proportional relationships are in the form
y = mx
that means the line has to go through the origin (0, 0). otherwise it is in the form
y = mx + b
which is still linear but not proportional.
1a.
the rate of change is between 2 points A and B
(Yb - Ya)/(b - a)
in our case e.g. (4, 5.52) and (8, 11.04)
(11.04 - 5.52)/(8 - 4) = 5.52 / 4 = 1.38
when we use other points we get the same result. we see e.g. that when we double x (pounds), then also y (cost) is doubled.
the rate of change is 1.38.
this is also called the slope of the line.
b.
as mentioned in a., when we multiply x by a factor, then y is multiplied by the same factor. it also means that the function contains (0, 0) : for 0 pounds we pay $0.
c.
y = 1.38x
2a.
the slope is (as it is the same as the rate of change) the ratio of (y coordinate change / x coordinate change) when going from one point on the line to another.
we try to find points with integer coordinates to do that.
I see e.g. (3, 4) and (6, 8).
x changes by +3 (from 3 to 6).
y changes by +4 (from 4 to 8).
so, the slope is +4/+3 = 4/3.
b.
the simplest indicator is that the line goes through the origin (0, 0), which it does.
c.
y = (4/3)x
COMPLETE THE PROOF! MY FINAL IS TMRW AT 8 AM!!!!
Given: segment QP is congruent to segment RS and segment QP is parallel to segment RS.
Prove: segment QR is parallel to segment PS.
A two-column method be that can used to prove that segment QR is parallel to segment PS is presented as follows;
Statement [tex]{}[/tex] Reasons
1. [tex]\overline{QP}[/tex] ≅ [tex]\overline{RS}[/tex] 1. Given
2. [tex]\overline{QP}[/tex] ║ [tex]\overline{RS}[/tex] [tex]{}[/tex] 2. Given
3. ∠PRQ ≅ ∠RPS [tex]{}[/tex] 3. Alt. int. angles theorem
∠QPR ≅ ∠PRS [tex]{}[/tex]
4. ∠PRQ = ∠RPS [tex]{}[/tex] 4. Definition of congruency
∠QPR = ∠PRS
5. ∠QRS = ∠PRQ + ∠PRS [tex]{}[/tex] 5. Angle addition postulate
∠QPS = ∠QPR + ∠RPS
6. ∠PRQ + ∠PRS = ∠QPR + ∠RPS [tex]{}[/tex] 6. Substitution property
7. ∠QRP = ∠QPS [tex]{}[/tex] 7. Transitive property
8. [tex]\overline{PR}[/tex] ≅ [tex]\overline{PR}[/tex] [tex]{}[/tex] [tex]{}[/tex] 8. Reflexive property
9. ΔQRP ≅ ΔSPR [tex]{}[/tex] 9. ASA congruency rule
10. ∠PQR ≅ ∠PSR [tex]{}[/tex] 10. CPCTC
11. ∠PQR = ∠PSR [tex]{}[/tex] 11. Definition of congruency
12. QRSP is a parallelogram [tex]{}[/tex] 12. Parallelogram opp. int. ∠s theorem
13. [tex]\overline{QR}[/tex] ║ [tex]\overline{PS}[/tex] [tex]{}[/tex] 13. Properties of a parallelogram
What is a parallelogram?A parallelogram is a quadrilateral that has opposite parallel sides.
The details of the reasons used to prove that the segment [tex]\overline{QR}[/tex] is parallel to segment [tex]\overline{PS}[/tex] are as follows;
Alt. int. angles theorem
The alternate interior angles theorem states that the alternate interior angles formed between two parallel lines and their common transversal are congruent
Definition of congruency
Two geometric figures are congruent if they have the same measurements.
Angle addition postulate
The angle addition postulate states that the measure of an angle ∠A, which is formed by two adjacent angles ∠B and ∠C, is the same as the sum of the measures of the two angles, ∠A = ∠B + ∠C
Substitution property
The substitution property of equality states that if a variable, a = another variable, b, a = b, then b can be plugged into expressions and equations to substitute for a and the values of the expressions and sides of equations remain the same.
Transitive property
The transitive property of equality states that if a = b, and b = c, then a = c
Reflexive property
The reflexive property of congruency states that a geometric figure is congruent to its self
ASA congruency rule
The Angle-Side-Angle congruency rule states that if two angles and the included side of one triangle are congruent to the two angles and included side of another triangle, then the two triangles are congruent.
CPCTC
CPCTC is an acronym for Corresponding Parts of Congruent Triangles are Congruent
Parallelogram opp. int. ∠s theorem
The parallelogram opposite interior angles theorem states that the opposite interior angles of a parallelogram are congruent.
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Both question A and B please
The coordinates of P and Q are
P (-1/2, 3/2) Q (-4, -3/2)PQ have equal slope with BC so they are parallel
How to find the coordinates of P and QThe coordinates of P and Q is found using the midpoint formula
The formula is of the form
X= (x₂ + x₁)/2
Y = (y₂ + y₁)/2
solving for P (X, Y) Using points A(2, -1), B(-3, 4)
(X, Y) = ((2 + -3)/2, (-1 + 4)/2)
= (-1/2, 3/2)
solving for Q (X, Y) points A(2, -1), C(-5,-7)
(X, Y) = ((2 + -5)/2, (-1 + -7)/2)
= (-3/2, -4)
Parallel lines have equal slopes
Using BC = (4 - -7) / (-3 - -5) = 11/2
Using PQ = (-4 - 3/2) / (-3/2 - -1/2) = (-11/2) / (-1) = 11/2
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Drag each label to the correct location in the equation. sakeem is a landscape architect. when he creates a lawn, his supplier charges $0.43 per square foot for sod. sakeem charges his customers $2.00 per square foot to lay the sod. the profit sakeem makes when creating a lawn varies directly as the number of square feet of sod he lays. create an equation to show sakeem’s profit when laying sod, where y is the profit and x is the number of square feet of sod. recall that profit is the difference of the amount earned and the amount spent.
The formula is Y=kx.
What is profit?the financial gain experienced when the income from a commercial activity is greater than the costs, taxes, and other costs associated with maintaining the activity in question.
When laying sod, the equation to determine sakeem's profit is Y= KX, where y represents profit, x is the number of square feet of sod, and k is a constant.
His supplier bills him $0.43 per square foot for sod when he builds a lawn.
For laying the sod, Sakeem's costs his clients $2.00 per square foot.
The amount of sod used to create a lawn directly affects how much money Sakeem's makes.
The profit will then be
Earnings = 2 - 0.43 ,Earnings = $1.57 per square foot
The formula is Y=KX.
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a basketball player has made 66% of his foul shots during the season. assuming the shots are independent, find the probability that in tonight's game he misses for the first time on his 6th attempt?
The probability that in tonight's game he misses for the first time on his 6th attempt = 0.2244
What is Probability?
A probability is a numerical representation of the likelihood or chance that a specific event will take place. Both proportions ranging from 0 to 1 and percentages ranging from 0% to 100% can be used to describe probabilities.
The Probability that the basketball player made a foul shot = 0.66 or 60%
Then the probability of good shot is = 1-0.66
= 0.34
probability that in tonight's game he misses for the first time on his 6th attempt = (1-p) 5(p)
= ( 1- 0.34)⁵ (0.34)
= 0.2244
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Literal Equations
help asap !!
Answer:
Step-by-step explanation:
2a + 4b = 12c
4b = 12c - 2a
b = 3c - 1/2a
or
b = (6c - a)/2
2. The Linton family has a circular swimming pool. The radius of the pool is 15 feet_
circumference of the pool? Use 3.17 for
The required circumference of the pool is given as 95.1 feet.
What is the perimeter?Perimeter is the measure of the figure on its circumference. where the circumference of the circle is given as 2πr.
Here,
The Linton family has a swimming pool as of the circular profile.
The radius of the circular swimming pool is 15 feet
π = 3.17
Now,
Circumference of the swimming pool is given as,
= 2πr
Substitute the value in the above formula,
Circumference of the swimming pool = 2 × 3.17 × 15
= 95.1 feet.
Thus, the circumference is 95.1 feet.
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A man is running through a train tunnel. When he is 2/5 of the way through, he hears a train that is approaching the tunnel from behind him at a speed of 60 mph. Whether he runs ahead or runs back, he will reach an end of the tunnel at the same time the train reaches that end. At what rate, in mph, is he running?
Answer:
12
Step-by-step explanation:
He is running 12