Answer:
a = 2[tex]w^{2}[/tex] + 3w
Step-by-step explanation:
Area = length time width
A= (2w + 3) w
a = 2[tex]w^{2}[/tex] + 3w
Your uncle wants to create a dog small enough to fit into a purse. Of the hundreds of dogs on his farm, he breeds only the smallest 10% of them. He then breeds only the smallest 10% of their offspring, and continues to breed only the smallest 10% of each generation. Over 20 years, he observes that his group of dogs did become smaller (though not small enough to fit into a purse). Which line of support does he have that his dogs have evolved?.
A kind of evolution through artificial selection is the practice of choosing creatures with desired features over several generations.
The mix of alleles found in an organism is known as its genotype. A phenotype is also the culmination of all the organism's discernible traits. In artificial selection, people choose animals or plants with favored phenotypic features for reproduction.
Since the phenotype is impacted by the genotype, the process of artificial selection alters allele frequencies throughout generations, resulting in the evolution of desirable features in offspring.
In conclusion, a kind of evolution through artificial selection is the practice of selecting creatures with desired qualities over several generations.
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How do I find the slope between (8,12) (10,20)
Answer: m = 4
hope thats right .
Step-by-step explanation:
Answer:
Let
Step-by-step explanation:
Let, (8,12) be (x1 and y1)
(10,20) be (x2 and y2)
We know that,
Slope = y2-y1
-----------.
x2-x1
= 20-12
-----------
10-8
= 8
-------
2
= 4 ans
so, the slope between twoo points is 4
Find the measure of angle 1
Answer: 58 degrees
Step-by-step explanation: add the 2 angles that you know together, then subtract that number from 180. This is using the triangle sum theorem.
Answer:
b is the correct answer
Step-by-step explanation:
92 degree +30 degree +angle 1 = 180 (Since, Sum of angles of triangle is 180 degree)
Therefore, angle 1 is 58 degree .
When trevor and brian play ping pong, the probability that trevor will win is 0. 6. If trevor and brian play two games of ping pong, what is the probability that they each win one of the games? assume games are independent.
The probability that they will each win a game = 0.24
Given,
The probability that Trevor will win the game p = is 0.6
The formula we will use for calculating Trevor losing the game
⇒ q = 1 - p
Now the probability of Trevor losing the game ⇒ q = 1 - 0.6
= 0.4
Now the probability that Brian wins = 0.4 when Trevor loses and the probability that Trevor wins = 0.6 when Brian loses the game.
Now the four possibilities that will decide the outcome for 2 ping pong games-
Trevor wins both games = 0.6 x 0.6 ⇒ 0.36Trevor wins the first and Brian wins the second ⇒ 0.6 x 0.4 = 0.24Brian wins the first and Trevor wins the second ⇒ 0.4 x 0.6 = 0.24Brian wins both games ⇒ 0.4 x 0.4 = 0.16Total probability = 0.36 + 0.24 + 0.24 + 0.16
= 1
Therefore, the probability that they each win one of the games = is 0.24
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Use elimination to solve the system of equations. −3x−8y=−24 3x−5y=4.5
We can eliminate a variable by adding the two equations, doing that we will find the solution (4, 1.5)
How to solve a system of equations by elimination?Here we have the following system of equations:
-3x - 8y = -24
3x - 5y = 4.5
To eliminate a variable, we can simply add the two equations and the variable x will be eliminated, let's do that:
(-3x - 8y) + (3x - 5y) = -24 + 4.5
Grouping like terms we get:
(-3x + 3x) + (-8y - 5y) = -19.5
0 - 13y = -19.5
Now we can solve this for y:
y = -19.5/-13 = 19.5/13 = 1.5
To get the value of x, we need to replace the value of y in one of the equations:
-3x - 8*(1.5) = -24
-3x = -24 + 8*1.5
-3x = -12
x = -12/-3 = 4
The solution is (4, 1.5)
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The length of a rectangle is 3 inches longer than half of its width. The area of the rectangle is 416 square inches. How many inches in width is the rectangle?
A. 16 inches
B. 19 inches
C. 26 inches
D. 32 inches
Answer:
C
Step-by-step explanation:
The area of the base of the oblique pentagonal pyramid is 50 cm2 and the distance from the apex to the center of the pentagon is 6startroot 2 endroot cm. the measure of ∠acb is 45°. the height, ab, is cm. the volume of the pyramid is cm3.
The height, ab, is 6 cm
The volume of the pyramid is 100 cm3.
we know that
ABC is a right triangle and we know that
∠ACB=45°
AC=hypotenuse------ 6√2 cm
sin 45=AB/AC----- AB=AC*sin 45----> AB=6√2*√2/2----> AB=6 cm
AB=6 cm
we already know that the formula for getting the volume of a pyramid
volume of the pyramid=(1/3)*Area of the base*height
We will now Substitute all the values in the formula;
area of the base=50 cm²
height=6 cm
so
volume of the pyramid=(1/3)*50*6---->
1/3*300
300/3
1=00 cm³
volume=100 cm³
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Answer:
6, 100
Step-by-step explanation:
right on edge
the family fine arts center charges $24 per adult and $12 per senior citizen for its performances. on a recent weekend evening when 483 people paid admission, the total receipts were $7548. how many who paid were senior citizens?
337 were senior citizens.
What is the system of equations?
A system of equations, also known as an equation system or a set of simultaneous equations, is a finite set of equations for which common solutions are sought.
Here, we
Let
x = the number of adult tickets sold
y = the number of senior tickets sold
483 people paid admission => a total of 483 tickets were sold and
x + y = 483
the total receipts were $7548
24x + 12y = 7548
by solving the system of equations
x + y = 483....(1)
24x + 12y = 7548....(2)
From equation (1), we get
x = 483-y....(3)
Now, we put the value of x in equation (2) and we get
24(483 - y) +12y = 7548
11592 - 24y + 12y = 7548
12y = 4044
y = 337
Now, we put the value of y in equation (1) and we get
x = 483 - 337
x = 146
Hence, 337 were senior citizens.
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what is 464 divided by 60 with a remainder?
(trying to figure out how many hours is 464 minutes)
The remainder when the number 464 is divided by 60 is 44.
What is an expression?The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given that the number 464 is divided by 60. The remainder will be calculated as,
Divide the number 464 by the basic operation of long division.
60 ) 464 ( 7
-420
_______
44
When 464 is divided by 60, the remainder is 44.
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here is another
(2x2^2)+1
Answer:
4*2=8
8+1=9
Step-by-step explanation:
the expected frequencies in a chi-square test . a. are always whole numbers b. can contain fractions or decimal values c. can contain both positive and negative values d. can contain fractions and negative numbers
The expected frequencies in a chi-square test is can contain fractions or decimal values
What is Chi-Square Test?
When the sample sizes are large, a chi-squared test is a statistical hypothesis test used in the study of contingency tables. To put it another way, the main purpose of this test is to determine if two categorical factors have independent effects on the test statistic.
What is Expected Frequencies?
A theoretical frequency that we anticipate to show up in an experiment is known as an expected frequency.
Expected frequency = Expected percentage * Total count
The expected frequencies in a chi-square test is can contain fractions or decimal values
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Which reason justifies step 6 below?
Use the diagram.
The congruence theorem that justifies the similar triangles of triangles EFH and GFH is given as follows:
D. AAS.
Why the two triangles are similar?For the triangles EFH and GFH in this problem, we have that:
The angles E and G have the same measure.The right angles have the same measure.The side lengths HF is the same, by the reflective property of congruence.These three features are used to identify the congruence theorem as follows.
Then the congruence theorem that justifies the similar triangles of triangles EFH and GFH is the Angle-Angle-Side theorem, given by option D, as:
Two angles, the bottom angles and the right angle have the same measure.The non-included side HF has the same measure.More can be learned about congruence theorems at https://brainly.com/question/29994750
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Please help!!!! 2
Josh is inviting his friends to a party. He has 42 granola bars and 56 fruit drinks, and he wants to give the same number of each item to each friend. He also wants to give all of them to his friends, having nothing left over.
Fill in the blanks to describe how many friends Josh can invite.
At most, Josh can invite
friends to the party. If he invites that many friends, each will receive
granola bars and
fruit drinks.
At most Josh can invite 14 friends to the party. If he invited that many friends, each will receive 3 granola bars and 4 fruit drinks.
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,
Number of granola = 42
Number of fruit drinks = 56
The highest common multiples of 42 and 56.
14 x 3 = 42
14 x 4 = 56
Now,
The number of friends that can be invited is 14.
Where each friend gets an equal number of each item.
Thus,
At most Josh can invite 14 friends to the party.
The number of items each friend received is 3 granola bars and 4 fruit drinks.
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A farmer wants to make a rectangular field with a total area of. It is surrounded by a fence. It is divided into equal areas by fences. What is the shortest total length of fence with which this can be done?.
The shortest total length of the fence is 808 m.
What is a rectangle?
A rectangle is a quadrilateral with all four interior angles 90°.
Given that the area of the rectangular field is 800 m².
Let the length and the width of the rectangle be x and y.
Then, the area of the rectangle is:
A= xy
Or, xy = 800
x = 800/y (1)
The perimeter of the triangle is:
2x +2y
Since the triangle is divided into three equal parts by fence, the total length of the fence is equal to the sum of the perimeter of the triangle and two times the length or width of the triangle.
Therefore, the total length of the fence is:
L = 2x + 2y + 2x
L = 4x +2y
Substitute x = 800/y into the above equation:
L = 4(800/y) + 2y
L = 3200/y +2y (2)
Differentiate the equation with respect to y:
L' = -3200/y² +2
Substitute L'= 0 into the above equation:
0 = -3200/y² + 2
y² = 3200/2
y² = 1600
y = 400
Substitute y = 400 into equation (2):
L = 3200/400 + 2(400)
L = 8 + 800
L = 808
Hence, the shortest total length of the fence is 808 m.
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A hula hoop ha a radiu of 18 inche. Madion i going to roll it down her 15 foot driveway. How many rotation will it take to get to the end?
Working on the perimeter of the hoop, The rotation by the hoop to reach the end of 15 foot is about 1.59.
What do you perimeter?The perimeter of a form is the space surrounding its edge. Find the perimeter of various forms by summing the lengths of their sides.
What is the formula for the perimeter of circle?The required formula is:
[tex]P = 2\pi r[/tex]
radius = 18 inches = 1.5 foot
Perimeter = 2 * 3.14 * 1.5
=9.42
Number of rotations = 15 / 9.42
=1.59
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Write the equation of the line that passes through the points (−1,−9) and (−9,−9). pls
Answer:
y= -9
Step-by-step explanation:
slope intercept form is y=mx+b
m is slope
b is y intercept
slope formula is y2-y1/x2-x1
-9-(-9)/-9-(1)
0/-10
0 is the slope
y=0x+b
-9=0(-9)+b
-9=b
hopes this helps
Sophia uses 334 cups of flour for each cake she makes. She has a 10-pound bag of flour that costs $8.79 and contains 152 quarter-cup servings.
Question 1
Part A
How many cakes can Sophia make with this flour?
Answer:
The number of cakes Sophia can make is 10.
Step-by-step explanation:
The bag of flour contains 152 quarter-cup servings. So, the quantity in t he bag has to be divided by four.
Number of cups = 152 / 4 = 38 cups
In order to determine the number of cakes she can make, divide the number of cups in the bag by the cups needed to make one cake.
38 ÷ 3 3/4
38 ÷ 15/4
38 × 4/15 = 10.1 cakes
Following the route shown, what is the total distance traveled by the architectural tour if it ends where it started? What properties and theorems did you use to find the distance?
Using, -------------------- it can be shown that the two triangles formed are congruent. Then using ,---------------------------- the length of the road from the intersection to the first turn can be found to be ---------------------- feet. Thus, the total length of the tour is --------------- feet.
Answer's first blank:
Side-Angle Side
CPCTC
Side- Side - Side
Answer's second blank:
Side- Side - Side
CPCTC
Side-Angle Side
The theorems used are:
First blank: side-angle-side theorem
Second blank: CPCTC
Third blank: 200 feet
Fourth blank: 1,700 feet.
What is the Side-angle-side Congruence Theorem (SAS):Wen two triangles have a pair of included congruent angles and two pairs of corresponding congruent sides, then both triangles are congruent to each other by the side-angle-side theorem.
Furthermore, if two triangles are known to be congruent to each other, the CPCTC states that "corresponding parts of corresponding triangles are congruent". This means all angles and all sides that corresponds to each other are congruent.
Therefore:
Using the side-angle-side theorem it can be shown that the two triangles are congruent to each other.
Then using CPCTC , the length of the road from the intersection to the first turn would be 200 feet.
The total length of the tour would be = 2(200 + 300 + 350)
= 1,700 feet.
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Using, SAS it can be shown that the two triangles formed are congruent. Then using ,-CPCTC the length of the road from the intersection to the first turn can be found to be 200 feet. Thus, the total length of the tour is 1,700 feet.
What is SAS?The SAS Triangle Theorem indicates that if two sides and the included angle of one triangle are equal to two sides and the included angle of another triangle, the triangles are congruent.
By the use of the corresponding parts of congruent triangles are congruent (CPCTC) rule, we can state that the missing side is 200 feet. If that is the case, then the total distance traveled can be obtained by adding all the lengths of triangles:
=200 + 200 + 300 + 350 + 350 + 300
= 1,700 feet.
Hence, te total length of the tour is 1,700 feet.
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I need somebody to help me on this. 20 points. Please
Answer:
I have no idea sorry
Step-by-step explanation:
i'm in middle school
please anyone help me with this question i need it ASAP!! all it’s asking if the following lines parallel or perpendicular or neither. please anyone help meee
Answer: Neither.
Step-by-step explanation: I believe it's neither because I plotted the given points below and it gave me this for the result:
Hope this helps! :)
48 ÷ ((2 + 6) × 2) − 1
Answer:
Step-by-step explanation:
pemdas - parenthesis , exponet, multiply, divide, add, subtract. your answer is 3.5
Approximate the area under the curve y = x 3 from x = 3 to x = 5 using a right endpoint approximation with 4 subdivisions.
The approximation of the area of the region R is 182.8125
Given:
y = x^3
from [2,5] using 6 subdivisions
deltax = (5 - 2)/6 = 3/6 = 0.5
hence the subdivisions are:
[2, 2.5]; [2.5, 3]; [3, 3.5]; [3.5, 4]; [4, 3.5]; [4.5, 5]
hence the right endpoints are:
x1 = 2.5; x2 = 3; x3 = 3.5; x4 =4; x5 = 4.5; x6 = 5
now the area is given by:
A = deltax*[2.5^3 + 3^3 + 3.5^3 + 4^3+ 4.5^3 + 5^3]
A = 0.5*365.625
A = 182.8125
The area using the Right Endpoint approximation is 182.8125.
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Two friends are sharing one half of a pizza that is divided into three pieces, as shown in the figure.
Circle O has diameter A D and radii B O and C O. Angle A O B is adjacent to angle B O C. Angle B O C is adjacent to angle C O D.
If m∠AOB = (3x − 6)° and m∠BOD = (5x + 14)°, what is the value of x?
10.0
21.5
58.5
121.5
If m∠AOB = (3x − 6)° and m∠BOD = (5x + 14)° in this pizza, the value of x is equal to: B. 21.5.
What is a supplementary angle?In Mathematics, a supplementary angle can be defined as two (2) angles or arc whose sum is equal to 180 degrees.
Mathematically, a supplementary angle can be calculated by using this formula:
X + Y = 180
Where:
X and Y are measure of the angles subtended.
Generally speaking, we know that an entire pizza is circular in shape with an angular measure of 360°. This ultimately implies that, one-half of an entire pizza is equal to 180°, which means m∠AOB and m∠BOD are supplementary angles.
Substituting the given parameters into the formula, we have;
m∠AOB + m∠BOD = 180
3x − 6 + 5x + 14 = 180
8x + 8 = 180
8x = 180 - 8
8x = 172
x = 172/8
x = 21.5.
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Answer:
Step-by-step explanation:
B) 21.5
Which town has a greater population density?
Town A: 397,546 people within 387 square miles
Town B: 264,108 people within 261 square miles
A. Town A, by about 15 people per square mile.
B. Town B, by about 126 people per square mile.
C. Town A, by about 1,027 people per square mile.
D. Town B, by about 1,012 people per square mile.
Answer:
A
Step-by-step explanation:
we find how many people are every square mile by dividing
397,546/387
1027 people per square mile
Town B: 264,108/261
1012 people per square mile
1027-1012
15
Town A is bigger by 15 people so A is correct
hopes this helps
The population density of Town A is 15 more than the of Town B so, option A is correct.
What is division?It is the basic arithmetic operation, in which you are separating the number into some parts. One of the fundamental mathematical operations is division, which involves breaking a bigger number into smaller groups with the same number of components.
Given:
Town A: 397,546 people within 387 square miles,
Town B: 264,108 people within 261 square miles,
Calculate the density in Town A as shown below,
The density in Town A = Total number of people/total area
The density in Town A = 397546 / 387
The density in Town A = 1027.25
Calculate the density in Town B as shown below,
The density in Town B = Total number of people/total area
The density in Town B = 264108 / 261
The density in Town B = 1011.9
Thus, find the difference as shown below,
The density in Town A - The density in Town B
1027.25 - 1011.9
15.3 or 15
Therefore, the greater population density, is of Town A, by about 15 people per square mile.
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45/27 = x/3 pls help
Answer:
x = 5
Step-by-step explanation:
[tex]\frac{45}{27}[/tex] = [tex]\frac{x}{3}[/tex] ( cross- multiply )
27x = 3 × 45 = 135 ( divide both sides by 27 )
x = 5
Answer:X=5
Step-by-step explanation:
1st. divide the numbers
2nd. Multiply all terms by the same value to eliminate fraction denominators
3rd.Cancel multiplied terms that are in the denominator
4thMove the variable to the left
which gets: x=5
solve the problem and you get 30 coins
x3+y3+z3=k
Answer: 42
Step-by-step explanation:
Solve the following linear equation for x.
5\{x}-2+\{x}=9+3\{x}+105x−2+x=9+3x+10
Answer:
x=21.
Step-by-step explanation:
x=21.
answers only help pls
Answer:
[tex]f(x) = 32(3x-1)[/tex]
Step-by-step explanation:
I just plugged in values of x into the different functions provided this function check out. Also charge your computer
The collection of ordered pairs below represents a function: {(4, 19), (-2, 77), (0, 10), (), (1, 10). (-3,0), (100, 100)} a. State the domain of the function. b. State the range of the function.
Answer:
Domain: [-3,100] if continuous. {x|x=-3,-2,0,1,4,100} if discrete.
Range: [0,100] if continuous. {y|y=0,10,19,77,100} if discrete.
Step-by-step explanation:
what does a z-score tell us? question 14 options: 1) how many standard deviations an observation is from the mean. 2) the middle value if the data is in ascending order. 3) the average of a data set. 4) how many standard deviations an observation is from the median.
If X is a normally distributed random variable and X ~ N(μ, σ), then the z-score is: z = x−μ/ σ
The z-score indicates the number of standard deviations that the value x is above (right) or below (left) the mean μ. Values of x greater than the mean have positive z values, and values of x less than the mean have negative z values. The z-score of x is zero if x is equal to the mean.
The standard normal distribution is the normal distribution of standardized values called z-scores. Z-scores are measured in units of standard deviation. For example, if the normal distribution has a mean of 5 and a standard deviation of 2, then the value 11 is 3 standard deviations above (or to the right of) the mean. Here's the calculation:
x = μ + (z)(σ)
= 5 + (3)(2)
= 11
The standard normal distribution has zero mean and one standard deviation. The transformation
z= x − μ/σ
gives the distribution Z ~ N(0, 1). The value x comes from a normal distribution with mean μ and standard deviation σ.
The next two videos explain what it means to have a "normal" distributed data set.
If X is a random variable and follows a normal distribution with mean µ and standard deviation σ, the rule of thumb states within 1 standard deviation of the mean.
About 95% of the x-values lie between –2σ and +2σ of the mean µ (within two standard deviations of the mean).
About 99.7% of the x-values lie between –3σ and +3σ of the mean μ (within 3 standard deviations of the mean) .
Almost all x-values are within 3 standard deviations of the mean.
1) +1σ and -1σ have z-scores of +1 and -1 respectively.
2) +2σ and -2σ have Z-scores of +2 and -2 respectively.
3) +3σ and -3σ have Z-scores of +3 and -3 respectively.
The rule of thumb is also known as the 68-95-99.7 rule.
The exact value used to calculate the median; further decreasing the minimum value or increasing the maximum value will not change the median value. Therefore, the median does not use all the information in the data and is therefore shown to be less efficient than the mean or average, which uses all the values in the data. To calculate the average, add the observations and divide by that number.
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