Answer:
The First person who answered it was wrong! Its 32,760 I took the test lol!
Step-by-step explanation:
nPr = n!/(n-r)! <-- The equation used for this.
Four girls and three boys volunteer to represent their class at a school assembly.the teacher selects one name and then another from a bag containing the seven students names.what is the probability that both representatives will be girls
A 10-foot piece of string is cut into two pieces so that the longer piece is 1 footfoot longer than twice the shorter piece. If the shorter piece is x feet long, find the lengths of both pieces.
shorter piece = x
longer piece = 2x+1
3x+1 =10
3x=9
x = 9/3=3
short piece = 3 feet
long piece = 2*3+1 = 7 feet
solve the equation using any method: -2x^2-4x=6
4m - 4 = 4m
Please solve and show work
One-on-one mapping from one plane to the same plane is called:
congruency.
transformation.
isometry.
None of the choices are correct.
Final answer:
Isometry is the term used for a one-on-one mapping from one plane to the same plane. It is key in transformations and geometry studies.
Explanation:
Isometry is the term for a one-on-one mapping from one plane to the same plane. In mathematics, this concept is crucial in the study of transformations and geometry. An isometry preserves distances, angles, and areas in a mapping, making it a significant concept in mathematical modeling.
A carpenter is building a rectangular bookcase with diagonal braces across the back, as shown. The carpenter knows that angle ADC is a right angle and that angle BDC is 32° greater than mangle ADB. Solve an equation to find angle BDC and angle ADB.
Answer:
m∠ADB = 29° and m∠BDC = 61°
Step-by-step explanation:
It is given that m∠ADC = 90°
Since m∠ADB + m∠BDC = 90° [∠ADB and ∠BDC are complimentary]
Since ∠BDC = ∠ADB + 32°
So, m∠ADB + m∠ADB + 32° = 90°
2(m∠ADB) + 32° = 90°
2(m∠ADB) = 90 - 32
2(m∠ADB) = 58°
m∠ADB = 29°
Since m∠ADB + m∠BDC = 90°
So, m∠BDC + 29° = 90°
m∠BDC = 90 - 29
= 61°
Therefore, m∠ADB = 29° and m∠BDC = 61°
m∠ADB = 29° and m∠BDC = 61°
Solving this will just be based on some basic angle theorems in a triangle.
We are given; m∠ADB = 29° and m∠BDC = 61° We are told that m∠ADC is a right angle. This means that; m∠ADC = 90°Now, since m∠ADC = 90°, it means that;m∠ADB + m∠BDC = 90° (because m∠ADB and m∠BDC are complimentary angles due to the fact that angle at point D is 90°)
We are also told that;m∠BDC is 32° greater than angle m∠ADB
This means that we can write as;
m∠BDC = m∠ADB + 32°
From earlier, we saw that;m∠ADB + m∠BDC = 90°
Thus, putting m∠ADB + 32° for m∠BDC, we will have;m∠ADB + m∠ADB + 32° = 90°
2(m∠ADB) + 32° = 90°
Subtract 32° from both sides to get;
2(m∠ADB) = 90° - 32°
2(m∠ADB) = 58°
m∠ADB = 58°/2
m∠ADB = 29°
Puttting 29° for m∠ADB into; m∠ADB + m∠BDC = 90° gives us;29° + m∠BDC= 90°
Subtract 29° from both sides to get;
m∠BDC = 90° - 29°
m∠BDC = 61°
In conclusion, m∠ADB = 29° and m∠BDC = 61°Read more at; brainly.com/question/4687866
A certain triangle has two 45 angles. What type of triangle is it?
A. Acute scalene
B. Right scalene
c. Right isosceles
D. Acute isosceles
Answer:
C. Right isosceles
Step-by-step explanation:
In Acute scalene triangle, all angles are acute ( less than 90 degrees ) and different,
In Right scalene triangle, two angles are acute and different, while, the third angle is of 90°.
In Right isosceles triangle, two angles are acute and equal, while, the third angle is of 90°.
In Acute isosceles, all angles are acute in which any two angles are equal.
Now, given,
The two angle of the triangles are 45° and 45°,
Let x be the third angle,
⇒ x + 45° + 45° = 180°
⇒ x + 90° = 180°
⇒ x = 90°
Hence, the angles of given triangle are 45°, 45° and 90°,
By the above definitions,
It is clear that, given triangle is right isosceles.
Option C is correct.
a mail distribution center processes as many as 150,000 pieces of mail each day. the mail is sent via ground and air. each land carrier takes 1800 pieces per load and each air carrier 1500 pieces per load. the loading equipment is able to handle as many as 150 loads per day. let X be the number of loads by air carriers and y the number of loads by air carriers. write a system of inequalities that represents this situation
Final answer:
The system of inequalities representing this situation is:
1500X + 1800Y ≤ 150,000.
X + Y ≤ 150.
X ≥ 0 and Y ≥ 0.
Explanation:
Let's define X as the number of air carrier loads and Y as the number of land carrier loads. Given that the mail distribution center processes up to 150,000 pieces of mail each day and the loading equipment can handle a maximum of 150 loads per day, we can write the following system of inequalities:
The total mail processed by both air and land carriers cannot exceed 150,000 pieces:
1500X + 1800Y ≤ 150,000.
The total number of loads carried by both air and land carriers cannot exceed 150 loads:
X + Y ≤ 150.
Furthermore, since there cannot be a negative number of loads, both X and Y have to be non-negative:
X ≥ 0 and Y ≥ 0.
These inequalities model the constraints for the mail distribution center's operations.
Enter the slope-intercept equation of the line shown below.
Which number is greatest?
a. 3.4 × 10-2
b. 4.3 × 10-3
c. 5.2 × 10-4
d. 6.1 × 10-4
Answer:
the answer is d 6.1x 10-4
Step-by-step explanation:
I need to know how to find angle "H"
Find the volume of the square pyramid with length 14.7 inches and height 18 inches.
Rewrite the equation 8x+6x^2-7=x^2
in standard form and identify a, b, and c.
To rewrite the equation 8x + 6x^2 - 7 = x^2 in standard form, subtract x^2 from both sides and combine like terms. The standard form of the equation is 5x^2 + 8x - 7 = 0. The values of a, b, and c are 5, 8, and -7 respectively.
Explanation:The given equation is 8x + 6x^2 - 7 = x^2.
To rewrite it in standard form, we need to collect like terms. Subtracting x^2 from both sides, we get: 6x^2 + 8x - x^2 - 7 = 0.
Combining like terms, the standard form of the equation is 5x^2 + 8x - 7 = 0.
Here, a = 5, b = 8, and c = -7.
Sarah decides to take her six-year-old son to the circus the price for the child ticket is $4.75 dollars Less in the price for the adult ticket if we represent the price for the child ticket using the variable X how would you write the algebraic expression for the adult ticket price
Meghan works at an ice cream shop and makes $8.25 per hour Lucas works at a landscaper and makes $6.50 per hour how much more does Meghan makes each hour ?
2x^3+2x^2-19x+20=0 find the roots of the polynomial equation
Answer:
[tex]\frac{3+i}{2} , \frac{3-i}{2} , -4[/tex]
Step-by-step explanation:
Given f(x) = x + 2 and g(x) = x2 – 4, find the function (g/f)(x).
You want to buy a new bike, and your parents will contribute $32.50 toward the cost of the bike. If the most expensive bike is $50.00, how much will you have to spend on the bike? Solve the following inequality 50.00 > 32.50 + x and graph its solution.
(50 Points Please help)
Drag the expression that is the most reasonable measurement for each object.
Answer:
A. Length of a Tour Bus ↔ #2. 1.1 × 10¹ meters
B. Width of an apple ↔ #3. 4 × 10⁰ centimeters
C. Distance from Earth to a Satellite ↔ #6. 8 × 10² kilometers
D. Thickness of a human hair ↔ #5. 9 × 10¹ micrometers
Step-by-step explanation:
The length of a tour bus should be measured in meters. It sure is way less than 1 kilometer and way more than a few centimeters. It could be about some meters, more than 5 meters, may be between 10 meters and 15 meters.
The measurement in the box # 2. is 1.1 × 10¹ meters, which is equivalent to 1.1 × 10 meters = 11 meters. Thus, this is a reasonable length.
B. Width of an apple.
The most appropriate unit to measure the width of an apple should be centimeter. It certainly is shorter than 1 meter and bigger than 1 mm.
The width of an apple could be, more or less, around 8 centimeters. The only measurement in the boxes that is in that order is that in the box #3., 4 × 10⁰ centimeters, because 10⁰ = 1, so 4 × 10⁰ = 4 × 1 = 4 centimeters.
C. Distance from Earth to a Satellite
The distance from Earth to a satellite should be measured in kilometers.
You can find in the internet that the distances of the satellites are between 700 kilometers and 36,000 kilometers.
The number in the box #1 is too big, in the order of ten trillions of kilometers, because one trillion is 10¹²; thus that is nonseasonal (too big).
The number in the box #6 is 8 × 10² kilometers, which is equal to 8 × 100 = 800 kilometers.
Thus, 8 × 10² kilometers (box #6) is the most reasonable measurement for the distance from Earth to a Satellite
D. Thickness of a human hair
Of course, kilometers, meters, centimeters and even millimeters are units too big to measure the thickness of a human hair.
One micrometer is 10⁻⁶ meters or 10⁻³ millimeters.
In the internet you can find that diameter of the human hair is in the range from 17 micrometers to 181 micrometers.
The measurement in the box #5. is 9 × 10¹ micrometers, which is equivalent to 9 × 10 = 90 micrometers.
Thus, 9 × 10¹ micrometers is the most reasonable measurement for the thickness of a human hair.
A. Length of a Tour Bus ↔ 2. 1.1 × 10¹ meters
B. Width of an apple ↔ 3. 4 × 10⁰ centimeters
C. Distance from Earth to a Satellite ↔ 6. 8 × 10² kilometers
D. Thickness of a human hair ↔ 5. 9 × 10¹ micrometers
What is Satellite?
A satellite is a moon, planet or machine that orbits a planet or star. For example, Earth is a satellite because it orbits the sun. Likewise, the moon is a satellite because it orbits Earth.
What is expression?
An act, process, or instance of representing in a medium (such as words) : utterance freedom of expression. Something that manifests, embodies, or symbolizes something else this gift is an expression of my admiration for you.
According to question, we have to drag the expression that is the most reasonable measurement for each object.
Length of Tour Bus is generally between 1 meter to 2 meters.
So, Reasonable measurement for Length of a Tour Bus is [tex]1.1[/tex]× [tex]10^{1}[/tex] meters
Width of an apple is generally between [tex]2[/tex] centimeters to [tex]6[/tex] centimeters
So, Reasonable measurement for Width of an apple is [tex]4[/tex]×[tex]10^{0}[/tex] centimeters .
Distance from Earth to a Satellite is generally between [tex]700[/tex] kilometers to [tex]3600[/tex] kilometers.
So, Reasonable measurement for Distance from Earth to a Satellite is
[tex]8[/tex]×[tex]10^{2}[/tex] kilometers.
Thickness of a human hair is generally between 17 micrometers to 181 micrometers.
So, Reasonable measurement for Thickness of a human hair is [tex]9[/tex]×[tex]10^{1}[/tex] micrometers.
Hence, we can conclude that the following expression is the most reasonable measurement for each object.
A. Length of a Tour Bus ↔ 2. 1.1 × 10¹ meters
B. Width of an apple ↔ 3. 4 × 10⁰ centimeters
C. Distance from Earth to a Satellite ↔ 6. 8 × 10² kilometers
D. Thickness of a human hair ↔ 5. 9 × 10¹ micrometers
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The number of lines that can be drawn perpendicular to a given line at a given point on that line in a plane is
Answer:
I JUST HAD THIS QUESTION 1
Step-by-step explanation:
The depreciating value of a semi-truck can be modeled by y = Ao(0.87)x, where y is the remaining value of the semi, x is the time in years, and it depreciates at 13% per year. What is the value of the truck initially, Ao, and how would the graph change if the initial value was only $67,000?
Answer: 1) The value of truck initially would be $87000.
2) at t = 0 , y-axis would be cut at $67000.
Step-by-step explanation:
Since we have given that
[tex]y=A_0(0.87)^x[/tex]
Here, A₀ is the initial value.
Rate of depreciation = 13%
Number of years = x
So, The value of truck initially would be $87000.
As shown in the given figure.
If the the initial value of truck = $67000
Rate will be same but the y-intercept will change.
As change in initial value does not affect the rate but the y - intercept.
Then at t = 0 , y-axis would be cut at $67000.
If ABCDE is translated 2 units to the right and 4 units up, what will happen to the polygon?
Answer:
A polygon will move but won't change shape or size
Step-by-step explanation:
Given the figure
If ABCDE is translated 2 units to the right and 4 units up, then we have to choose the correct option.
A translation is a geometric transformation that moves every coordinate point of a figure by the same distance.
The result of translation transformation implies
The size, the shape and the orientation of the image after translation are same as that of the original object.
Hence, a polygon will move but won't change shape or size
Option A is correct
Which of the following statements is true?
The number 2 /3 is an irrational number.
The number -4 is a whole number.
The number 9 is a rational number.
The number 5/8 is a natural number.
50 POINTS FOR ANSWER!!!!!!!!!!!!!!!!!!!!!!
A mover uses a ramp to pull a 1000-Newton cart up to the floor of his truck, which is .8 meters high. If it takes 125 newtons to pull the cart, what is the length of the ramp?
. In the algebraic expression mc034-1.jpg 7, 17, and –10 are _____ terms. operations. coefficients. variables.
Answer:
Coefficient
Step-by-step explanation:
The correct option is A.
In the algebraic expression 7a+17b-10c, 7, 17 , and −10 are coefficients.
A. Coefficients. The numbers 7, 17, and -10 are coefficients in the expression 7a + 17b - 10c because they are the constants that multiply the variables a, b, and c respectively.
B. Incorrect. Operations are mathematical actions like addition, subtraction, multiplication, or division, not the constants themselves.
C. Incorrect. Variables, denoted by a, b, and c, are letters or symbols representing unknown or changing quantities, not the constants.
D. Incorrect. Terms are the individual parts of an expression separated by addition or subtraction, consisting of a coefficient and possibly a variable or variables multiplied together. The numbers 7, 17, and -10 are coefficients within the terms of the expression but are not terms themselves.
So, the correct option is A. Coefficients.
The complete question is here:
In the algebraic expression 7a+17b-10c, 7, 17 , and −10 are ______
A. coefficients.
B. operations.
C. variables.
D. terms.
WILL PICK BEST ANSWER IF ITS CORRECT TO ANSWER THESE FEW PROBLEMS
YOU MUST EXPLAIN WHY YOU KNOW
1)Which system of linear inequalities is represented by the graph?
(goes with pic 1)
y > 2/3x + 3 and y < -1/3x + 2
y > 2/3x + 3 and y < -1/3x + 2
y > 2/3x + 3 and y > -1/3x + 2
y > 2/3x + 3 and y >-1/3 x + 2
2)
Which system of linear inequalities is represented by the graph?
(goes with pic 2)
y > 2x – 1 and y < 2x + 2
y > 2x + 2 and y < 2x – 1
y < 2x + 2 and y > 2x – 1
y < 2x + 1 and y > 2x – 2
3)Which linear inequality is represented by the graph?
(goes with pic 3)
y > 2x + 2
y ≥ 1/2x + 1
y > 2x + 1
y ≥ 1/2x + 2
4)
What is the solution to the system of linear equations?
(goes with pic 4)
(–3, 0)
(–3, 3)
(0, 2)
(3, 1)
Part 1)
In this problem we have two lines
The equation of the fist line is
[tex]y=\frac{2}{3}x+3[/tex]
The solution is the shaded area above the dashed line
so
the inequality is
[tex]y>\frac{2}{3}x+3[/tex]
The equation of the second line is
[tex]y=-\frac{1}{3}x+2[/tex]
The solution is the shaded area below the full line
so
the inequality is
[tex]y\leq -\frac{1}{3}x+2[/tex]
therefore
the answer Part 1) is
[tex]y>\frac{2}{3}x+3[/tex] and [tex]y\leq -\frac{1}{3}x+2[/tex]
Part 2)
In this problem we have two lines
The equation of the fist line is
[tex]y=2x+2[/tex]
The solution is the shaded area above the full line
so
the inequality is
[tex]y\geq 2x+2[/tex]
The equation of the second line is
[tex]y=2x-1[/tex]
The solution is the shaded area below the full line
so
the inequality is
[tex]y\leq 2x-1[/tex]
therefore
the answer Part 2) is
[tex]y\geq 2x+2[/tex] and [tex]y\leq 2x-1[/tex]
Part 3)
In this problem we have only one line
The equation of the line is
[tex]y=2x+1[/tex]
The solution is the shaded area above the dashed line
so
the inequality is
[tex]y>2x+1[/tex]
therefore
the answer Part 3) is
[tex]y>2x+1[/tex]
Part 4)
we know that
the solution of the system of linear equations is the intersection both graphs
so
see the graph
the solution point is [tex](0,2)[/tex]
therefore
the answer part 4) is the option
[tex](0,2)[/tex]
What is the reason for the third step in this proof? Corresponding sides of congruent triangles are equal in length. The diagonals of a rectangle bisect each other. SSS criterion for congruence Opposite sides of a parallelogram are congruent.
Answer: D Opposite sides of a parallelogram are congruent.
Step-by-step explanation:
The correct answer is the Opposite sides of a parallelogram are congruent.
What is a parallelogram?A parallelogram is a quadrilateral having four sides and the two opposite sides are equal and parallel to each other.
Consider a parallelogram with diagonals that are congruent and perpendicular.
In triangles Δ AOB and Δ AOD,
OA = OA (common)
OB = OD (Since the diagonals of a parallelogram bisect each other)
∠ AOB = ∠ AOD = 90° (diagonals are perpendicular)
Therefore, Δ AOB ≅ Δ AOD (By SAS postulate)
Since, corresponding parts of congruent triangles are equal,
AB = AD
Similarly, we can prove
BC = CD and CD = DA
So, AB = BC = CD = DA.
Also, it is given that AC = BD.
Therefore the correct answer is the Opposite sides of a parallelogram are congruent.
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Find the critical value tc for the confidence level cequals 0.95 and sample size nequals 19.
The critical values are fixed values which can be obtained from the standard t crit tables. We can find the critical value tc when the degrees of freedom and confidence level are given. The degrees of freedom is simply:
Degrees of Freedom = Number of samples – 1
Degrees of Freedom = 19 – 1
Degrees of Freedom = 18
From the t critical tables, the tc corresponding to Degrees of Freedom equal to 18 and Confidence level equal to 95% is as follows:
tc = 2.101
Therefore this means that any t value beyond 2.101, we already reject the null hypothesis.
Sarah is y years old now. How could you represent her age 5 years ago?
y + 5
5 y
y - 5
y ÷ 5
y-5..................................................
How do I find the perimeter and area?