Answer:
28
Step-by-step explanation:
Since 42 tomatoes were picked, we can take the reciprocal (the reversed fraction) of the 9:6 ratio and make it 6:9, then multiply 42 by 6/9.
a study was designed to investigate the effects of two variables (1) a student's level of mathematical anxiety and (2) teaching method , on a student's achievement in a mathematics course. students who had a low level of mathematical anxiety were taught using the traditional expository method. these students obtained a mean score of 370 with a standard deviation of 50 on a standardized test. assuming a mound-shaped and symmetric distribution, in what range would approximately 95% of the students score?
On a test with a range of 110–410, these students received a mean score of 370 and a standard deviation of 50. What range would roughly 95% of the students' scores fall into, presuming a mound-shaped and symmetric distribution.
A variable is what?Any traits, figures, or amounts that may be gauged or counted are considered variables. Another name for a variable is a data item. Variables include things like age, sex, business income and expenses, birthplace, capital expenditures, class grades, eye color, and vehicle type.
Which examples use variables?A variable is a quality that may be measured and take on several values. A few examples of variables are height, age, income, province of birth, school grades, and kind of dwelling. Categorical and numeric variables are the two basic types of variables that can be categorized.
In the figure, NQ is parallel to OP and NQ = 4, OP = 6, and
MQ=8. How long is MP?
Answer:
MP = 12 cm
Step-by-step explanation:
4cm : 6cm
8cm : x
8 * [tex]\frac{6}{4}[/tex] = 12 cm
MP = 12 cm
Find an equation of the circle whose diameter has endpoints (-3,-1) and (1,2)
The equation of the circle if diameter has endpoints (-3,-1) and (1,2) is x² + 2x + y² - y = 5.
What is a circle?A circle is a two-dimensional object made up of points that are spaced out from a given point (center) on the plane by a fixed or constant distance (radius).
Given:
The endpoints of the circle diameter are (-3,-1) and (1,2),
Calculate the coordinates of the center of the circle as shown below,
Center = (-3 + 1 / 2, -1 + 2 / 2)
Center = (-2/2, 1/2)
Center = (-1, 1/2)
Calculate the length of diameter as shown below,
Diameter = [tex]\sqrt{[1- (-3)]^2+[2-(-1)]^2}[/tex]
Diameter = √(4² + 3²)
Diameter = 5
Thus, radius = 5 / 2 =
Calculate the equation of the circle as shown below,
[x - (-1)]² + [y - 1/2]² = (5/2)²
Simplify the above equation as shown below,
x² + 2x + y² - y = 5
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Find the value of x. Then find the measure of each angle and write the answers in ascending order.
By using the properties of triangle, it can be calculated that-
Smallest angle = 30°
Next larger angle = 60°
Largest angle = 90°
What is a triangle?
Triangle is a three sided two dimensional figure. A triangle has three sides and three interior angles.
The angles of a triangle are x, 2x and 90
Sum = x + 2x + 90 = 3x + 90
By the problem,
3x + 90 = 180
3x = 180 - 90
3x = 90
x = [tex]\frac{90}{3}[/tex]
x = 30
Smallest angle = 30°
Next largest angle = 2 [tex]\times[/tex] 30 = 60°
Third angle = 90°
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Is this correct?? Functions or not a function?
Answer: No
Step-by-step explanation:
Graph: You can use the vertical line test to determine if it is a function. Draw a vertical line (going up and down) on the graph. If it only intersects one
point, then it is a function. If it crosses two points, it is not a function.
Chart: If the x repeats and the y does not repeat, it is not a function. y can repeat as much as it wants, as long as the x does not.
Lines: If one x connects to multiple y, it is not a function. If one y connects to multiple x, it is a function.
Coordinates: Same as the chart
Why whole number is not closed under subtraction but integers is closed under it?
Integers have a greater and more suitable range to be closed for subtraction than whole numbers.
According to the closure property of subtraction, the difference between two integers will always be an integer.
An integer is a number that ranges from minus infinity and infinity and is not a fraction.
Whereas all positive valued integers including 0 are whole numbers.
Now if we subtract a larger whole number from a smaller whole number, then the difference will obviously be negative. Hence, the result will be an integer and not a whole number.
example= 25 - 30
= -5
Here both 25 and 30 are whole numbers but -5 is not. But all three are considered integers.
Hence, subtraction is closed under integers and not whole numbers.
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What is the square of √ 1?
The square of given expression √1 ( square root of 1 ) is equal to 1.
As given in the question,
Given expression is equal to √1 ( square root of 1 )
To calculate the square of √1 we have,
Let us consider variable x is equal to √1
x = √1
Now take square on both the sides of the given expression we get,
x² = (√1 )²
⇒ x² = √1 × √1
Multiplying square root of 1 to square root of 1 is equal to 1 we get,
or use law of exponent :
√1 × √1 = [tex]1^{\frac{1}{2} + \frac{1}{2} }[/tex]
= 1
⇒ x² = 1
Therefore, the square of the given expression √1 ( square root of 1 )is equal to 1.
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How many servings are in an 8lb bag of French fries?
There are 16 ounces in a pound.
The proper serving size of french fries is reportedly only 12 to 15 fries.
I know the answer but I need help with the work
I WIL GIVE 20 POINTS AND BRAINLIST for ANSWER!!!
Jessica estimated that her family used 30% more water this month compared to last month. They used 12000 gallons of water last month. How much water did they use this month? Use the sketch tool to complete the double number line diagram if it is helpful.
Answer:
Below
Step-by-step explanation:
30% is .3 in decimal
So the family used 100 % of last month PLUS .3 of last month MORE
12 000 = 100 % now add .3 (12 000) more =
12 000 + .3 ( 12 000) = 15600 gallons this month
What is the equation of a line that passes through the point (- 1/4 and is parallel to the y axis?
The equation of a line that passes through [tex](-1,4)[/tex] and is parallel to the y-axis is [tex]x=-1[/tex]
The equation of the line passes through the point is [tex](-1,4)[/tex]
The line is parallel to the y-axis which means it cuts the x-axis at the point [tex](-1,0)[/tex]
The equation of the line parallel to the y-axis is [tex]x=-1[/tex]
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10. Mac Valent opened a new checking account and deposited his paycheck for
$209.81. The check register shows his transactions since opening his account.
What is his balance after each transaction?
(a) The balance after first transaction is, $162.66.
(b) The balance after second transaction is, $109.63.
(c) The balance after third transaction is, $2.33.
What is transaction?
An agreement that has been fulfilled between a buyer and a seller to exchange goods, services, or financial assets in exchange for cash is referred to as a transaction.
The following are a few examples of transactions: paying a supplier after receiving goods or services from them. acquiring ownership of a property the seller previously owned by paying the seller with cash and a note. remuneration for hours worked.
Given:
Mac Valent opened a new checking account and deposited his paycheck for $209.81.
We have to find the balance after each transactions.
The first transaction is of electric cooperative for $47.15.
So, the balance after first transaction is, $209.81 - $47.15 = $162.66.
The second transaction is of Sharp's Groceries for $53.03.
So, the balance after second transaction is, $162.66 - $53.03 = $109.63.
The third transaction is of Gimbles Auto Repair for $107.30.
So, the balance after third transaction is, $109.63 - $107.30 = $2.33.
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Complete question:
Complete question is attached below.
Find an nth-degree polynomial function with real coefficients satisfying the given conditions. If you are using a
graphing utility, use it to graph the function and verify the real zeros and the given function value.
n = 3;
-2 and 6+4i are zeros;
f(2)=128
Answer:
f(x) = x³ -10x² +28x +104
Step-by-step explanation:
You want a cubic polynomial f(x) with real coefficients, and its graph, such that one root is -2, another is 6+4i, and f(2) = 128.
Conjugate rootsA polynomial with real coefficients will have complex (or radical) roots that are conjugate pairs. That means the root 6+4i will be paired with a root 6-4i. The factored form of the required polynomial will be ...
f(x) = a(x -(-2))(x -(6 +4i))(x -(6 -4i))
f(x) = a(x +2)(x² -12x +52)
Scale factorWe can use the given value of f(2) to find the scale factor, a.
f(2) = 128 = a(2 +2)(2² -12·2 +52) = a(4)(32) = 128a
a = 1 . . . . . divide by 128
The required polynomial is ...
f(x) = (x +2)(x² -12x +52)
f(x) = x³ -10x² +28x +104
You rake leaves in your neighborhood after school and earn $6. 50 per yard you rake. How many yards do you need to rake to earn at least $52? what equation models this situation?.
At least Eight yards need to raked to earn minimum $52. The equation of model is $6.50 Y≥ $52. So, the correct answer is option(C).
The total earned income by rake leaves in your neighborhood after school is $6.50 per yard. The Minimum amount that you want to earn = at least $52
We have determined a equation of model for the given situation.
Let Y be the number of yards raked to earn at least $52. We have one yard raked which implies to earn $6.50
So,for Y yards raked it implies to earn $6.50× Y. But Y has to rake in atleast $52 , here the minimum is to earn either $52 or more than $52. So,Y($6.50 ) ≥ $52
dividing both sides by $6.50 we get,
Y ≥ 52/6.50
=> Y ≥ 52/6.50 = 8
Hence , at least 8 yards must be raked to earn minimum $52.
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Complete question:
You rake leaves in your neighborhood after school and earn $6.50 per yard you rake. How many yards do you need to rake to earn at least $52? What equation models this situation?
A. at least 45 yards; y + 6.5 ≥ 52.00,
y = number of yards raked
B. at most 8 yards; 6.50y 52.00,
y = number of dollars earned
C. at least 8 yards; 6.50y ≥ 52.00,
y = number of yards raked
D. at most 52 yards; y − 6.5 > 52.00,
y = number of dollars earned
Are the ratios 9:14 and 1:2 equivalent?
yes
Submit
no
Answer:
No
Step-by-step explanation:
6. Justify the last two steps of the proof.
Given: ABCD is a parallelogram.
Prove: A4BC = ACDA
A
B
1. ABDC is a parallelogram.
2. AB DC and BC= DA
3. AC = CA
4. JABC = ACDA
D
1. Given
2. Opposite sides of a parallelogram are congruent.
3.
C
4.
?
Justification for the last two steps of the proof is
3. Reflexive Property of (Congruence) ≅
4. SSS (Side to Side to Side Congruence rule)
What is SSS congruence postulate ?
A type of triangle congruence rule called Side-Side-Side (SSS) asserts that two triangles are congruent if their three sides are equal to their respective three sides of another triangle. When the dimensions of the matching sides and angles of two or more triangles match, the triangles are said to be congruent.
3. Any geometric figure compared to itself is congruent to itself so this is why:
AC ≅ CA
∠B ≅ ∠B
4. Since we have a parallelogram, therefore we can say:
BC ≅ DA
BA ≅ DC
CA ≅ AC
Both triangles ABC and CDA satisfy the side to side to side congruence, since their 3 sides are congruent.
So, It's D.
P.S.
Notice that the angle measure information is not included in the data above that's why we cannot say it is SAS congruence.
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Use properties to rewrite the given equation. Which equations have the same solution as 2.3p – 10.1 = 6.5p – 4 – 0.01p? Select two options.
2.3p – 10.1 = 6.4p – 4
2.3p – 10.1 = 6.49p – 4
230p – 1010 = 650p – 400 – p
23p – 101 = 65p – 40 – p
2.3p – 14.1 = 6.4p – 4
Answer:
This equation does not have the same solution as the original equation.
In conclusion, equations 1 and 2 have the same solution as the original equation (2.3p – 10.1 = 6.5p – 4 – 0.01p). Equations 3, 4, and 5 do not have the same solution.
Step-by-step explanation:
2.3p – 10.1 = 6.4p – 4
Using the commutative property of addition, we can rearrange the terms on the left-hand side of the equation to get:
-6.4p + 2.3p = -4 + 10.1
Combining like terms, we have:
-4.1p = 6.1
Dividing both sides by -4.1, we get:
p = -1.49
This equation has the same solution as the original equation.
2.3p – 10.1 = 6.49p – 4
Using the commutative property of addition, we can rearrange the terms on the left-hand side of the equation to get:
-6.49p + 2.3p = -4 + 10.1
Combining like terms, we have:
-4.19p = 6.1
Dividing both sides by -4.19, we get:
p = -1.46
This equation has the same solution as the original equation.
230p – 1010 = 650p – 400 – p
This equation does not have the same solution as the original equation.
23p – 101 = 65p – 40 – p
This equation does not have the same solution as the original equation.
2.3p – 14.1 = 6.4p – 4
Using the commutative property of addition, we can rearrange the terms on the left-hand side of the equation to get:
-6.4p + 2.3p = -4 + 14.1
Combining like terms, we have:
-4.1p = 10.1
Dividing both sides by -4.1, we get:
p = -2.47
1.24.94 is 29% of what number?
Answer:
588
Step-by-step explanation:
Amy put some salt in a weighing dish. Then she put the weighing dish on a sensitive balance to measure the mass of the salt. She removed the weighing dish from the balance and put it in several similar balances. She recorded the mass each time.
Mass 1 Mass 2 Mass 3 Mass 4 Mass 5
5.608 g 5.607 g 5.608 g 5.608 g 5.609 g
Amy forgot to subtract the mass of the empty weighing dish from her measurements, and she reported the mass of the salt as 5.608 grams.
Amy's measurement of the salt's mass
accurate because
.
Amy's measurement of the salt's mass
precise because
.
Amy's measurement of the salt's mass is not accurate because it is not close to the actual value. Amy's measurement of the salt's mass is precise because the individual measurements are similar.
What is measurement?In Mathematics, measurement can be defined as an act or process through which the size, weight, magnitude, quantity, volume (capacity), dimensions, or distance traveled by a physical object or body is taken, especially for the purpose of an experiment.
In Science, precision is a quality which is independent of accuracy because it only describes how close together are numerical values that are obtained in a series of measurements.
In conclusion, accuracy is a quality which measures how close a measurement is to the actual value.
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Complete Question:
Amy forgot to subtract the mass of the empty weighing dish from her measurements, and she reported the mass of the salt as 5.608 grams. Amy's measurement of the salt's mass (1) ______ accurate because (2) ______ . Amy's measurement of the salt's mass (3)_____ precise because (4) _______ .
1. is
is not
2. it is not close to the actual value
she used five different balances
the individual measurements are similar
3. is
is not
4. it is not close to the actual value
she used five different balances
the individual measurements are similar
3. The length and breadth of a hall are 28 m and 21 m respectively. If the ratio of its length to its height is 7:6, find the ratio of its breadth to its height.
Answer: The ratio of the breadth to the height of the hall is 7:8
Step-by-step explanation:
The ratio of the length to the height of the hall is 7:6, which means that if the length of the hall is represented by 7, the height is represented by 6. We can write this as a proportion as follows:
7/6 = L/H
We know that the length of the hall is 28 meters, so we can substitute this value for L in the proportion to find the height:
7/6 = 28/H
Solving for H, we get:
7/6 = 28/H
7H = 168
H = 168/7 = 24
The height of the hall is 24 meters.
The ratio of the breadth of the hall to its height is the same as the ratio of 21 to 24, which simplifies to 7:8. Therefore, the ratio of the breadth to the height of the hall is 7:8.
Mr.Wright has $350.He puts 25%of it in a savings account. How much did Mr.Wright deposit?
Answer:
The answer is $87.5
Step-by-step explanation:
350 × 25 ÷ 100
8750/100 = 87.5
Thus, Mr. Wright deposit $87.5
How will the solution of the system Y 2x 2 3 and y 2x 1/3 change?
There is no intersection and no solution to the system since the region above the line y=2x+2/3 and the region below the line y=2x+1/3 are the solutions to the inequalities y>2x+2/3 and y<2x+1/3, respectively.
In the given question, we have to find the solution of the system Y>2x+2/3 and y<2x+1/3 change.
We firstly draw the two lines y=2x+2/3, and y=2x+1/3.
They are parallel and the line y=2x+2/3 is located over the line y=2x+1/3.
There is no intersection and no solution to the system since the region above the line y=2x+2/3 and the region below the line y=2x+1/3 are the solutions to the inequalities y>2x+2/3 and y<2x+1/3, respectively.
The solution of y2x+2/3 is the region below the line y=2x+2/3, and the solution of y>2x +1/3 is the region above the line y=2x+1/3 when the inequality sign of both inequalities is reversed. This implies that the area between the two lines is where the system's solution lies.
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The right question is:
How will the solution of the system Y>2x+2/3 and y<2x+1/3 change? If the inequality sign on both inequalities is reversed to y<2x+2/3 and y>2x+1/3?
If you rotate the point (2,-2)
positive 45 around the origin, what are the coordinates
The coordinate is (2√2 , 0).
What are coordinates?Coordinates are a pair of integers (Cartesian coordinates), or occasionally a letter and a number, that identify a certain place on a grid, often referred to as a coordinate plane.
If you rotate the point (2,-2) positive 45 around the origin.
To find the coordinates:
the formula;
X = xcosФ - ysinФ
And Y = xsinФ + ycosФ
and here Ф = 45° and x = 2 and y = -2
Now, X = 2/√2 + 2/√2 = 2√2
Y = 2/√2 - 2/√2 = 0
Therefore, the coordinate is (2√2 , 0).
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Find the value of x.
The value of x is obtained as 9.4 units.
What is Pythagoras theorem?Pythagoras theorem states that in a right angled triangle, the sum of the squares of the perpendicular and base is equal to the square of the hypotenuse. It can be written as h² = p² + b².
The value of x for the given figure can be calculated as,
Use pythagoras theorem for lower triangle as below,
p² + b² = h²
=> p² = h² - b²
=> p² = 12² - 6²
= 108
Now, substitute the value of p² in the expression for upper triangle as,
x² + p² = 14²
=> x² + 108 = 196
=> x² = 88
=> x = 9.4
Hence, the value of x for the given figure is 9.4 units.
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HELLLPPP 3X-9=(6x6)/4
PLEASE solve
Answer:
3X−9=
4
6⋅6
Multiply both sides of the equation by 4.
12X−36=6×6
Multiply 6 and 6 to get 36.
12X−36=36
Add 36 to both sides.
12X=36+36
Add 36 and 36 to get 72.
12X=72
Divide both sides by 12.
X=
12
72
Divide 72 by 12 to get 6.
X=6
This table shows how many sophomores and juniors attended two school
events.
Sophomore
Junior
Total
Jazz band
concert
35
36
71
Volleyball game
42
24
66
Total
77
60
137
What is the probability that a randomly chosen person from this group is a
sophomore and attended the volleyball game?
Round your answer to two decimal places.
The required probability is approximately 0.3066 or 0.31. Option B is correct.
What is probability?Probability can be defined as the ratio of favorable outcomes to the total number of events.
Here,
There are a total of 77 + 60 = 137 students in the group.
Out of these students, 42 sophomores attended the volleyball game.
So the probability of a randomly chosen person from this group being a sophomore and attending the volleyball game is:
P(sophomore and volleyball) = 42/137
Therefore, the probability is approximately 0.3066 or 0.31. Option B is correct.
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PLEASE HELP NOW
Alex's weekly earnings for working 40 hours plus 3 hours of working overtime was $480.17. If
$48.57 of that paycheck was overtime pay, what was his hourly rate for the first 40 hours of
work?
$10.04
$10.79
O$11.17
$12.00
Answer:
$10.79
Step-by-step explanation:
1) Make an equation
40x + 48.67 = 480.17
where x is hourly pay
2) Solve
40x + 48.67 = 480.17
40x + 48.67 - 48.67 = 480.17 - 48.67
40x = 431.50
40x / 40 = 431.50 / 40
x = 10.79
Why is 2x-3=2x+5 Not a solution
Answer:
not a solution
Step-by-step explanation:
2x-3=2x+5
-2x. -2x
-3=5
not a solution because -3 does not equal 5
The diagram shows a triangle.
What is the value of z?
98⁰
49°
Z
Answer:
33
Step-by-step explanation:
All triangle angles together add up to 180
So we can set up this equation to find angle z:
98 + 49 + z = 180
Now solve:
98 + 49 + z = 180
147 + z = 180
-147 -147
z = 33
the food label on the can of baked beans says that there are three servings per container and that each serving has 140 calories. if mark eats the entire can, how many calories will he consume?
Answer:
420 calories
Step-by-step explanation:
Multiply 140 by 3 because there are three servings in a can, and each serving is 140 calories, so the number of calories in the can is the product of the numbers.
how old is my mom?19+10=?
Answer:
29 years old
Step-by-step explanation:
Answer: 29
Step-by-step explanation: 29 but we want to round that up to 30 because 29 is odd but due to science and polls nobody likes the number 30 so we go back to 29 but it’s uneven so we go to 28 to make it even but we also don’t like that number so we go back to 29 and that how we get it.