Answer: -3/2
yeah use rise over run
Answer:
-2/3
Step-by-step explanation:
slope = rise/run
First find the y-intercept (point of crossing on the y-axis (the vertical one)), then find the next point that intercepts a box PERFECTLY, this next point is (4, -2)
Looking at the y-intercept's coordinates (0,1), count how many blocks down it takes to get to to 4 (2 blocks which is the RISE) and now count how many blocks to the right it takes to get to -2 (3 blocks)
Therefore it is 2/3 but it is also negative because it is going DOWN from left to right which is a negative decine
Part C
Find the average and margin of error for each of the following: the entire sample, 1950s records, 1960s records, 1970s records, Company A records, Company B records, and Company C records.
Part D
An oil embargo in the 1970s made vinyl more expensive, which some collectors say caused a decrease in average vinyl weight from 1970 onward. Do the data support this claim? Why or why not? Be sure to discuss averages, margins of error, and anything else that is relevant in your answer.
The average is 40 and the margin of error is 10.95.
What is margin of error?
The margin of error is a statistic expressing the amount of random sampling in the result of a survey.
Average (A) = sum of all the value/ given set.
A = (51+ 41 + 28)/3 = 40
margin of error = 100/square root of 120 = 10.95.
Therefore, the average is 40 and the margin of error is 10.95.
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A square pyramid has a base edge of 1 meter. The height of each triangular face is 1 meter. What is the pyramid's surface area?
Answer:
A square pyramid has 5 faces: 1 square base and 4 triangular faces.
The area of the base is:
A = s^2
where s is the length of the base edge.
In this case, s = 1 m, so:
A = 1^2 = 1 m^2
The area of each triangular face is:
A = 1/2 * b * h
where b is the base of the triangle (which is equal to the length of one side of the square base) and h is the height of the triangle (which is given as 1 m).
In this case, b = 1 m and h = 1 m, so:
A = 1/2 * 1 * 1 = 0.5 m^2
The total surface area of the pyramid is the sum of the area of the base and the area of the four triangular faces:
SA = A_base + 4 * A_triangles
SA = 1 + 4(0.5)
SA = 1 + 2
SA = 3 m^2
Therefore, the surface area of the pyramid is 3 square meters.
At a sale this week, a desk is being sold for $536. This is 67% of the original price.
What is the original price?
Answer:
884.4
Step-by-step explanation:
Answer:
The original price is 895.12$
I haven't done percent in ages, lmk if you get it right
kudos to any other answer besides this
Step-by-step explanation:
What is the value of x?
Enter your answer in the box.
9514 1404 393
Answer:
x = 50
Step-by-step explanation:
Vertical angles have equal measures.
2(x +10)° = (3x -30)°
2x +20 = 3x -30 . . . . . . divide by ° and eliminate parentheses
50 = x . . . . . . . . . . . . . add 30-2x to both sides
_____
Check
The top angle is 2(50 +10)° = 120°.
The bottom angle is (3(50) -30)° = 120°. The angles are congruent, as they should be.
Which figure correctly demonstrates using a straight line to determine that the graphed equation is not a function of x?
Mark this and return
3
2
4
Save and Exit
Next
Submit
Answer:
2 is really answer it is this question bro than ka for good point
Step-by-step explanation:
hello shreekant thanks 886A bubs 2 is answr
What is the answer to the question please ?
Answer:
Step-by-step explanation:
easy its A tell me if u got it correct good job (:
A three-way intersection is sometimes called a
T-intersection
Y-intersection
Both a and b
Neither a nor b
Answer:
Both A and B
Step-by-step explanation:
Both a and b. A three-way intersection can be referred to as a T-intersection or a Y-intersection, depending on the shape of the intersection. In a T-intersection, one road intersects another road perpendicularly, forming a T-shape. In a Y-intersection, one road splits into two branches, forming a Y-shape.
Cakculate the Length of line x
The length of line x in the figure of the cube given is 19.
Calculate the length of the base of the cube, which is the diagonal of the lower sides :
base length = √10² + 6²
base length = √136
The length of x is the diagonal of the cube
x = √baselength² + 15²x = √(√136)² + 15²
x = √136 + 225
x = √361
x = 19
Therefore, the length of line x in the figure given is 19.
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Pleaseeeee helpppppp meee
Answer:
C, F
Step-by-step explanation:
Dont have time rn
Find the measure of 2.
62 = [?]
121
42
Answer:
59°Step-by-step explanation:
∠2 and 121° are supplementary as consecutive interior angles:
m∠2 + 121° = 180°m∠2 = 180° - 121°m∠2 = 59°a) 16 / (-4)
b) (-56) / 8
c) (-28) / (-2)
I er uh need some assistance
Answer:
6
Step-by-step explanation:
16/2.5 = 6.4, but you have to round down because you cant chop a book into tenths, so 6
18) Solve for side AC.
A) 1.10
B) 8.24
C) 9.50
70
C
3
B
Step-by-step explanation:
tan0=opp/adj
where opposite =3,adjacent =x,=70
tan 70=3/x
2.7474=3/x
2.7474x=3
divide both sides by 2.7474
x=3/2.7474
x=1.0919
x=1.10 to 1 d.p
please see picture for question
The data below shows favorite animal of toddlers. What is the best scale for a bar graph?
Answer:
100
Step-by-step explanation:
-1 19/50 as a decimal number, what is it?
Answer:-1.38
19/50=.38 in decimal form +(-1) = -1.38
Answer:
uytrfvvhhhhhhhjkklñññññlluuyjnkuyjuyjju
In the figure, the area of square WXYZ is 25 cm2. The four smaller squares have sides 1 cm long, either parallel to or coinciding with the sides of the large square. In ∆ABC, AB = AC, and when ∆ABC is folded over side BC, point A coincides with O, the center of square WXYZ. What is the area of ∆ABC, in square centimeters?
a. 15/4
b. 21/4
c. 27/4
d. 21/2
e. 27/2
Area of Δ ABC is 27/4
What is the area of the figure ?
To find the area of a figure or other irregular-shaped figure, divide it into simple, non overlapping figures. Find the area of each simpler figure, and then add the areas together to find the total area of the figure.
Given that, the area of square WXYZ is 25 cm².
so, area of square WXYZ = (side length of square)²
⇒ 25 cm² = (side length of square)²
∴ The side lengths of square WXYZ must be 5 cm
First, you should determine the height of ΔABC.
The distance from O to line WZ must be 2.5 cm, since line WX = 5 cm, and the distance from O to Z is half of that.
The distance from line WZ to line BC must be 2, since the side lengths of the small squares are 1, and there are two squares from line WZ to line BC.
So, the height of ΔABC must be 4.5, which is 2.5 + 2.
The length of BC can be determined by subtracting 2 from 5, since the length of WZ is 5, and the two squares in the corners give us 2 together.
This gives us the base for ΔABC, which is 3.
Then, area of Δ ABC = 1/2 (3×4.5)
= 27/4
Hence, area of Δ ABC is 27/4
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on a separate sheet of paper, sketch the rectangle for each problem using any method round and estimate to check your answer problem 1 5 x 4,751
The rounded off answers for the area of the rectangles are as follows: 1) 24,000, 2) 42,000, 3) 31,200, 4) 31,200.
What is rounding of a number?Rounding of a number is a mathematical process of approximating a given number to a specified level of accuracy or precision. Rounding is done to make numbers easier to work with or to communicate, especially when the number has many decimal places or digits.
The process of rounding involves changing a number to a nearby value that is easier to use or communicate, while still retaining its approximate value. The number is rounded to a certain number of decimal places or significant digits, depending on the required level of accuracy.
1. 5 x 4751 ≈ 5 x 4800 = 24,000.
To check the answer, we can estimate 4751 as 4800, and then multiply 5 by 4800 to get the approximate product of 24,000.
2. 7 x 6000 = 42,000.
To check the answer, we can simply multiply 7 by 6000 to get the product of 42,000.
3. 6 x 5214 ≈ 6 x 5200 = 31,200.
To check the answer, we can estimate 5214 as 5200, and then multiply 6 by 5200 to get the approximate product of 31,200.
4. 8 x 3867 ≈ 8 x 3900 = 31,200.
To check the answer, we can estimate 3867 as 3900, and then multiply 8 by 3900 to get the approximate product of 31,200.
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The following are the scaled off results for the rectangles' area:: 1) 24,000, 2) 42,000, 3) 31,200, 4) 31,200.
What is rounding of a number?The mathematical process of approximating a given number to a predetermined degree of accuracy or precision is known as rounding. In particular when a number has numerous decimal points or digits, rounding is done to make numbers simpler to work with or communicate.
In order to make a number simpler to use or communicate, a number is rounded to a more manageable value while retaining its general meaning.
Depending on the necessary level of accuracy, the number is rounded to a particular number of significant digits or decimal places.
1. 5 x 4751 ≈ 5 x 4800 = 24,000.
To verify the result, we can convert 4751 to 4800, then increase 5 by 4800 to obtain a result that is roughly 20,000.
2. 7 x 6000 = 42,000.
We can quickly multiply 7 by 6000 to obtain the result of 42,000 to verify the solution.
3. 6 x 5214 ≈ 6 x 5200 = 31,200.
By converting 5214 to 5200 and multiplying that number by 6, we can approximate the solution to be 31,200.
4. 8 x 3867 ≈ 8 x 3900 = 31,200.
To verify the solution, we can convert 3867 to 3900 and multiply 8 by 3900 to obtain a result that is roughly 31,200.
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Marjorie needs to cut 5 yards of fabric into sections that are of a yard long. How many sections will she be able to cut from the fabric?
Answer:
5 sections
Step-by-step explanation:
5 yards of fabric is cut in 1 yard long
1 yard +1 yard +1 yard +1 yard +1 yard = 5 yards
5 sections
Let f(x) be defined for any positive integer x greater than 2 as the sum of all prime numbers less than x. For example, f(4)=2+3=5 and f(8)=2+3+5+7=17. What is the value of f(86)−f(82)?
(A) 3 (B) 4 (C) 47 (D) 59 (E) 83
The answer is not B pls remember this
Answer:
E
Step-by-step explanation:
RSM proves correct
The value of a given function is required.
So, the answer is (E)83.
The given function \(f(x)\) is the sum of all prime numbers less than \(x\).
The required function is \(f(86)-f(82)\)
\(f(86)=2+3+5+7+11+13+17+19+23+29+31+37+41+43+47+53+59+61+67+71+73+79+83\)
\(f(83)=2+3+5+7+11+13+17+19+23+29+31+37+41+43+47+53+59+61+67+71+73+79\)
\(f(86)-f(83)=2+3+5+7+11+13+17+19+23+29+31+37+41+43+47+53+59+61+67+71+73+79+83-(2+3+5+7+11+13+17+19+23+29+31+37+41+43+47+53+59+61+67+71+73+79)=83\)
All numbers become get subtracted except for 83.
So, the answer is (E)83.
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What is the area of a square that is 12 feet long and 9 feet wide
Answer:The area would be 108.
Step-by-step explanation:
12 x 9 = 108
Help help fast please please
Answer:
this would be a lot easier if i still had my notes from last year
Step-by-step explanation:
That makes no sense. what is the starting equation even?
how many grams of pure water must be added to 40 grams of a 10% saline solution to make a saline solution tha is 5% salt?
Answer:
40 grams
Step-by-step explanation:
going from 10% to 5% would be to double the quantity of the water.
A math class has 7 girls and 5 boys in the seventh grade and 4 girls and 4 boys in the eighth grade. The teacher randomly selects a seventh grader and an eighth grader from the class for a competition. What is the probability that the students she selects are both boys?
Answer:
Answer : 21%
Step-by-step explanation:
To find the probability of picking two boys, we need to first know how many different ways she can pick the 7th and 8th grader.
There are 12 7th-graders and 8 8th-graders. So the total number of ways she can pick is:
12×8=96
To get two boys picked, there are 5 boys in the 7th-grade class and 4 in the 8th-grade class, so there are:
5×4=20 ways
Which gives us the probability of:
2096=524≅21%
Hope this was helpful!❤
Which trigonometric ratios are correct for triangle DEF?
Select three options
sin(E) = 24/25
cos(D) = 7/25
tan(E) = 24/7
sin(D) = 7/25
tan(E) = 7/24
cos(E) = 24/25
Answer:
A, C, D
Step-by-step explanation:
Edge2022
Tony bought 8 books about plants and 3
books about fish. He also bought 7
science magazines. Each book cost $6
and each magazine cost $5. How much
did Tony spend in all?
Answer:
Tony spent $101.
Step-by-step explanation:
11*6 = 66
7*5 = 35
66+35 = 101
Calculate the distance between the points E = (-4 , 5) and L=(1 , -3) in the coordinate plane. Give an exact answer (not a decimal approximation).
The distance between the points E = (-4,5) and L = (1,-3) in the coordinate plane is \(\sqrt{89}\)
The points are E = (-4,5) and L = (1,-3)
We know the distance between the two points d = \(\sqrt{(x_{2}-x_{1})^{2}+(y_{2}-y_{1})^{2} }\)
Where d is the distance between two points
\((x_{1},y_{1} )\) and \((x_{2},y_{2} )\) are the coordinates of the points
Here the given points are E = (-4,5) and L = (1,-3)
To find the distance between the given points, we have to substitute the values in the equation
d = \(\sqrt{1-(-4))^{2}+(-3-5)^{2} }\)
d = \(\sqrt{5^{2}+(-8)^{2} }\)
d = \(\sqrt{25+64}\)
d = \(\sqrt{89}\)
Hence, the distance between the points E = (-4,5) and L = (1,-3) in the coordinate plane is \(\sqrt{89}\)
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En una empresa de papas fritas una máquina automática debe llenar las bolsas manteniendo una determinada cantidad de gramos, sin embargo, en algunas ocasiones los paquetes de papas pueden pesar más o menos del peso establecido. Se revisaron 2500 bolsas de los últimos días, en las cuales 2100 bolsas tuvieron el peso correcto, 275 tuvieron un peso menor y 125 tuvieron un peso mayor
Tomando cocientes veremos que:
a) La probabilidad es 0.84
b) En este caso es 0.16
¿Como encontrar las probabilidades?
Primero queremos encontrar la probabilidad de que una bolsa tenga el peso correcto, la probabilidad esta dada por el cociente entre el numero de bolsas con el peso correcto y el numero total de bolsas analizadas, entonces tendremos:
P = 2100/2500 = 0.84
b) Ahora lo mismo, pero con una bolsa de peso menor o mayor, tenemos:
125 que pesan mas
275 que pesan menos
Por un total de 125 + 275 = 400
Entonces la probabilidad es:
P = 400/2500 = 0.16
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La pregunta completa es:
En una empresa de papas fritas una máquina automática debe llenar las bolsas manteniendo una determinada cantidad de gramos, sin embargo, en algunas ocasiones los paquetes de papas pueden pesar más o menos del peso establecido. Se revisaron 2500 bolsas de los últimos días, en las cuales 2100 bolsas tuvieron el peso correcto, 275 tuvieron un peso menor y 125 tuvieron un peso mayor
a) ¿Cuál es la probabilidad de que tenga el peso correcto?
b) ¿Cuál es la probabilidad de que tenga un peso menor o mayor?
Janet spent $100 on books. This was k dollars less than five times what she spent on lunch. How much did she spend on her lunch?
Answer:
5x − k = 100
\(x=\frac{100-k}{5} \\\)
Step-by-step explanation:
The amount she spends on lunch is x = (100 + k) /5.
How to find how much did she spend on her lunch?Given: Janet spent $100 on books.
This was k dollars less than five times what she spent on lunch.
We can construct an equation from it :
5x-k = 100
Thus , x = (100 + k) /5.
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Y=2X squared -12 X +20 for quadratic formula
x = (12 ± √(-16)) / 4,The solutions would be complex numbers.
What is the quadratic formula?To solve quadratic equations of the form ax2 + bx + c = 0, use the quadratic formula. For this situation, your condition is as of now as a quadratic condition, with a = 2, b = - 12, and c = 20.
The quadratic formula is:
x = (-b ± √\((b^2 - 4ac)\)) / 2a
Plugging in the values for a, b, and c, we get:
x = (-(-12) ± √\(((-12)^2 - 4(2)(20)))\) / 2(2)
Simplifying the expression inside the square root:
x = (12 ± √\((144 - 160)\)) / 4
x = (12 ± √(-16)) / 4
Since the square foundation of a negative number is definitely not a genuine number, this condition has no genuine arrangements. Complex numbers would provide the answers.
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