Range is the difference between the highest score and lowest score.
To find the range the teacher needs to know the highest and lowest grades in the test.
if y is directly porportional to x^2 and the difference in the values of y when x=1 and x=3 is 32, find the value of y when x=-2
Answer:
Step-by-step explanation:
y=kx²
y₁=k(1)²=k
y₃=k(3)²=9k
y₁-y₃=k-9k=32
-8k=32
k=-4
y=-4x²
y₋₂=-4(-2)²=-16
someone please help me i rally need help
The equation which shows the cost of the admission tickets with tax inclusive is 4x + 25 = 175.
The cost is therefore $ 37.50.
How to calculate the cost of the tickets ?As each admission ticket is the same price, the total cost of 4 tickets can be written as 4x.
Given that the price of parking and four entry tickets is $175.00, we can write:
4x + $25.00 = $175.00
We may find x by simplifying the problem as follows:
4x = $175.00 - $25.00
4x = $150.00
x = $37.50
Therefore, the cost, in dollars, of each admission ticket, including tax, is $37.50.
Find out more on cost at https://brainly.com/question/10294035
#SPJ1
Which expressions can be added to find the volume of the solid figure?
Select all that apply.
A solid shape is made up of 2 attached rectangular prisms. First rectangular prism has a length of 3 m, height of 1 m, and width of 4 m. Second rectangular has a length of 3 m, height of 7 m, and width of 4 m. The total length of the shape is 6 meters.
A.
4
×
3
×
7
4
×
3
×
7
and
1
×
3
×
4
1
×
3
×
4
B.
4
×
6
×
7
4
×
6
×
7
and
1
×
3
×
3
1
×
3
×
3
C.
1
×
4
×
7
1
×
4
×
7
and
4
×
3
×
6
4
×
3
×
6
D.
4
×
6
×
1
4
×
6
×
1
and
6
×
4
×
3
6
×
4
×
3
E.
4
×
6
×
3
4
×
6
×
3
and
7
×
3
×
3
Answer:
the expressions that can be added to find the volume of the solid figure are 4 x 3 x 7 and 1 x 3 x 4, or 4 x 6 x 7 and 1 x 3 x 3.
Step-by-step explanation:
These are the expressions that can be added to find the volume of the solid figure.
To calculate the volume of the solid figure, we need to find the sum of the volumes of the two rectangular prisms that make it up. We can calculate the volume of each prism by multiplying its length, height, and width, and then add the two volumes together.
For the first prism, the volume is:
4 x 3 x 1 = 12 cubic meters
For the second prism, the volume is:
4 x 3 x 7 = 84 cubic meters
Adding the volumes together, we get:
12 + 84 = 96 cubic meters
Therefore, the expressions that can be added to find the volume of the solid figure are 4 x 3 x 7 and 1 x 3 x 4, or 4 x 6 x 7 and 1 x 3 x 3.
Solve: |4x+3|=|2x+1|
Step-by-step explanation:
|4x+3|=|2x+1|THERE ARE TWO UNIQUE EQUATIONs
4x+3=2x+1
2x=-2
x=-1
(or)
4x+3= -(2x+1)
4x+3=-2x-1
6x=-4
x=-2/3
Therefore x=-1 , -2/3I need help with this question please!! See attached
Answer:
(a) 191 had side effects
(b) 370 had nausea
(c) 86 had both anxiety and fatigue
Step-by-step explanation:
See attached. We look at the Venn diagram to answer the different questions.
If you are color blind let me know and I will mark the attachment more clearly.
I am thinking of a decimal number less than one. The hundredths digit is four times more than the tenths digit. The sun of the tenths and hundredths digit is 10. What number am I thinking of?
Answer:
The number would be 0.28.
here, in tenths position is 2 and in hundredths position is 8.
so, 8 = 4 x 2
and 8 + 2 = 10.
how did we get 136 degrees, explain
By using the definition of supplementary angles and the fact that the sum of the interior angles of a triangle always gives 180°, we will see that X° = 136°.
How to get the 136° of angle X°?First, notice that we have two isosceles triangles. By looking at the top angle, we can see that the interior angle of the top triangle and the angle of 101° are supplementary, then the measure of that angle is:
M = 180° -101° = 79°
Remember that the sum of the interior angles of a triangle is always equal to 180°, then for the top triangle we can write:
a + 79° + 79° = 180°
a = 180° - 2*79° = 22°
Where a si the angle of the bottom vertex, where the two triangles intersect.
Then the top angle of the bottom triangle also measures 22°.
Now, the two angles of the base of the bottom triangle measure 22°, and using again that the sum of the interior angles must give 180°, we will get:
22° + 22° + x° = 180°
x° = 180° - 2*22° = 136°
In this way, we conclude that the measure of angle X° is 136°.
Learn more about supplementary angles:
https://brainly.com/question/2046046
#SPJ1
Please help me I’ll mark you brainly
On solving the provided question, we can say that - here in graph we have on solving equation \(2x^2+ 9y^2 \\\) = \(8 + 9 = 17\)
What is equation?An equation is a formula in mathematics that joins two statements with the equal symbol = to represent equality. The definition of an equation in algebra is a mathematical statement proving the equality of two mathematical expressions. In the equation 3x + 5 = 14, for instance, the terms 3x + 5 and 14 are separated by an equal sign. The link between two phrases on either side of a letter is expressed mathematically. There is often only one variable, which is also the symbol. instance: 2x - 4 Equals 2.
here,
from graph, x= 2
y = 1
\(2x^2+ 9y^2 \\\)
\(8 + 9 = 17\)
To know more about equation visit:
https://brainly.com/question/649785
#SPJ1
Winston works selling bicycles.
He is paid a flat rate of $200 plus $50 for every bicycle that he sells.
How many bicycles must Winston sell to earn at least $650?
Answer:
3
Step-by-step explanation:
650/250 = 2.6 (3)can't sell half a cycle
Classify each triangle by its angles and sides
Please help!!
a. ABE:
b. BEC:
c. DEF:
d. CDF:
Answer:
a. Right triangle
b. Isosceles
c. Equilateral
d. Scalene
Step-by-step explanation:
a. ∆ABE has a right angle and 3 unequal sides, so therefore it can be classified as a right triangle.
b. In ∆BEC, side BE = 7
Side CE = FE + FC = 5 + 2 = 7
This means that ∆BEC has tow equal sides. Therefore, ∆BEC is classified as an isosceles triangle.
c. ∆DEF has 3 equal sides. Therefore it is classified as an equilateral triangle.
d. ∆CDF has 3 unequal sides. Therefore, it is a scalene triangle.
Answer:
I don't know I need help on the same question
For each of the variables described below, indicate whether it is a quantitative or a categorical (qualitative) variable. Also, indicate the level of measurement for the variable: nominal, ordinal, interval, or ratio. Make sure your responses are the most specific possible.
Variable Type of variable Level of measurement
(a) Duration (in minutes) of a call to a customer support line Quantitative Categorical Nominal Ordinal Interval Ratio
(b) Rating in a consumer magazine (excellent, above average, fair, or poor) Quantitative Categorical Nominal Ordinal Interval Ratio
(c) Voting status (registered or not registered) Quantitative Categorical Nominal Ordinal Interval Ratio
Variables are the quantities that are being measured.
Duration is a quantitative variable, and its level of measurement is intervalRating is a categorical variable, and its level of measurement is ordinalVoting status is a categorical variable, and its level of measurement is nominal.Variable type
A variable whose value is in numbers, is referred to as a quantitative variable; otherwise, it is a categorical variable.
This means that duration is quantitative, while rating and voting status are categorical.
Level of measurement
Nominal variables are named variables; e.g. Yes or No.
Voting status is a nominal variable
Ordinal variables are named and ordered variables, e.g. Excellent, or Very Good or Good, or Fail.
Rating is an ordinal variable
Intervals are named, ordered and are in intervals; e.g. 1 hour to 2 hours.
Duration is an interval variable
Read more about variables at:
https://brainly.com/question/1978633
!! Help On Math will give Brainliest to the person gets it correct!!
Mandy has 50 toy cars 20% of the cars are silver how many cars are silver
Please also explain too while you answer my question
Answer:
10 of the cars
Step-by-step explanation:
10% is 5 do then you times it by 2 and get 10
Find the volume of the solid formed by rotating the region inside the first quadrant enclosed by
y=x4 and y=125x
The volume of the solid formed by rotating the region inside the first quadrant enclosed by y=x⁴ and y=125x is 138438\(\pi\).
Let,
f(x) = 125x
g(x) = x⁴
Intersection points will be,
x⁴ = 125x
x = 0 , 3.3437
Volume V = \(\pi\)\(\int\limits^{3.34}_0{(125x)^{2} - x^8 } \, dx\)
=\(\pi\)\(\int\limits^{3.34}_0 {15625x^2-x^8} \, dx\)
=\(\pi\)[15625x³/3 - x⁹/9]₀³
=\(\pi\)[140625 - 2187]
= 138438\(\pi\)
The volume of the solid formed by rotating the region inside the first quadrant enclosed by two curves can be found using the method of cylindrical shells. This method involves cutting the solid into thin cylindrical shells and finding the volume of each shell. The sum of the volumes of the shells is equal to the volume of the solid.
To learn more about volume of the solid click on,
https://brainly.com/question/22807624
#SPJ4
14. let x be the distance in miles from their present homes to residences when in high school of individuals at a class reunion. then x is: (1) a categorical (nominal) variable (2) a continuous variable 3) a discrete variable (4) a parameter (
5) a statistic. 13. a subset of a population is:
(1) a parameter
(2) a population (3) a statistic (4) a sample (5) none of the above. 14. the median is a better measure of central tendency than the mean if:
(1) the variable is discrete (2) the distribution is skewed
(3) the variable is continuous (4) the distribution is symmetric
(5) none of the above is correct.
12. Then X is 2. a continuous variable, 13. A subset of a population is 4) a sample, 14. The median is a better measure of central tendency than the mean if 2) the distribution is skewed.
Data gathering, organization, analysis, interpretation, and presentation are all topics covered in the field of statistics. It is hence customary to start with a statistical population or a model to be studied when using stats to solve a scientific, industrial, or social problem.
There are as of now two main types of statistical analysis: descriptive stats explains and visualizes the data you have, while inferential stats extrapolates the data you have to a larger population.
Statistical analysis has a number of advantages for businesses, including cost-cutting and increased productivity. The central tendency measure and the dispersion measure are fundamental concepts in stats.
Mean, median, and mode are the three primary central tendencies, and variance and standard deviation are the main central dispersions. The observational average is referred to as mean. When observations are arranged in order, the median represents the central value.
To learn more about statistics: https://brainly.com/question/15525560
#SPJ4
Which sequence shows the numbers in order from least to greatest?
A. -2.14<3.16227766017<2.8
B. 2.8<3.16227766017<2.14
C. 2.14<3.16227766017 <2.8
D. 2.14<2.8<3.16227766017
The sequence that shows the numbers in order from least to greatest is D. 2.14 < 2.8 < 3.16227766017.
The sequence that shows the numbers in order from least to greatest is D. 2.14 < 2.8 < 3.16227766017.What is the meaning of the inequality symbols?The inequality symbols are mathematical symbols that are used to compare two values.
They indicate the relationship between two values that are not equal to each other. Here are the inequality symbols:
< (less than)≤ (less than or equal to)> (greater than)≥ (greater than or equal to)What is the meaning of the sequence?
A sequence is a set of numbers arranged in a particular order. The order of the numbers in a sequence can be from smallest to largest or largest to smallest.
The sequence D. 2.14 < 2.8 < 3.16227766017 is arranged from smallest to largest because the first number in the sequence, 2.14, is the smallest, and the last number in the sequence, 3.16227766017, is the largest.
To learn more about : sequence
https://brainly.com/question/7882626
#SPJ8
How do I solve for this?
Answer: \(cosx =- \sqrt{ 1 - sin^2x}\)
Step-by-step explanation:
Generally speaking; \(cos^2x + sin^2x = 1\)
rearranging this gives us all sorts of cool things.
for now, we will use: \(cosx = \sqrt{ 1 - sin^2x}\)
This however, is general.
In the third quadrant, cosine is negative. So cosx in QIII will be:
\(cosx =- \sqrt{ 1 - sin^2x}\)
and thats the answer :)
Which set of equations has (-4,1) as its solution?
A and B
B and D
A and C
B and C
Use the formula A=2πrh to find the area of the curved surface of each of the cylinders below. (Express your answers correct to 1 decimal place.)
Answer:
here,
A=2×22÷7×17/2×21
A=22×17×3
A=1122 sq.cm
Quad. PQRS ~ Quad. TUVW, Owe side of PORS has the length 12. The corresponding side of TUVW has length 15. The perimeter of TUVW is 35 and the perimeter of PQRS is?
Pls help me solve this!!
Therefore , the solution of the given problem of perimeter comes out to be PQRS = 29 units.
Establish a perimeter.The perimeter, or total length, of a shape is referred to as its perimeter in geometry. A shape's perimeter is calculated by summing the lengths of all of its sides and edges. By adding together the lengths of all a shape's sides, one may determine its perimeter. The circumference of a field, for instance, will be 78 yards for a rectangle with dimensions of 24 yards long by 15 yards wide.
Here,
Given : PQRS has the length 12
and TUVW has length 15.
thus ,
To find the perimeter of PQRS:
we find,
TUVW = 35 units
and
PQRS = 35 - 6
=> PQRS = 29
Therefore , the solution of the given problem of perimeter comes out to be PQRS = 29 units.
To know more about perimeter, visit
brainly.com/question/6465134
#SPJ1
solve for y. 9x+5y=7
Answer:
x=7-5y/9
Step-by-step explanation:
9x+5y-5y=7-5y
9x=7/9-5y/9
which is x=7-5y/9
hope that helpes :)
The principal wants to buy a banner that costs $95.
Five parents each donate $6 for the banner. How
much more money is needed? Complete the
equations to solve the problem.
95 - 6 x 5. 65 dollars is left needed.
The Taj Mahal is an enormous ivory-white marble monument in India that is known for
its architecture. More than 2 x 104 workers were involved in building the Taj Mahal.
Which number shows another way to express 2 x 10¹?
Answer:the iconic Indian building named Taj Mahal
Step-by-step explanation:
Is -7 rational Helppppppp
Answer:
Rational numbers are fractions composed of integers. An integer is a number with no fractional part. So 7/8 is a ratio of whole numbers, which makes it rational. Negative or positive does not matter.
Step-by-step explanation:
Under her cell phone plan, Micaela pays a flat cost of $47.50 per month and
$4 per gigabyte, or part of a gigabyte. (For example, if she used 2.3 gigabytes,
she would have to pay for 3 whole gigabytes.) She wants to keep her bill under
$55 per month. What is the maximum whole number of gigabytes of data she
can use while staying within her budget?
The maximum whole number of gigabytes is 1 gigabyte
How to determine the maximum whole gigabytesFrom the question, we have the following parameters that can be used in our computation:
Flat cost = $47.50
Rate = $4 per gigabyte
Using the above as a guide, we have the following:
f(x) = 47.50 + 4x
She wants to keep her bill under $55 per month
So, we have
47.50 + 4x < 55
Evaluate
4x < 7.5
Divide by 5
x < 1.875
So, we have
x = 1
Hence, the whole gigabyte is 1 gb
Read more about linear relation at
https://brainly.com/question/10209928
#SPJ1
*ill give you BRAINLIST * (have to get it right ) Write the equation of the line with the given slope and y-intercept.
slope = 1
y-intercept = - 3/7
Answer:
Y=x-3/4
Step-by-step explanation:
slope intercept form
(slope=x)(1x=x)
Find the sum of following two quantities if the number is reprensented by x
i. Seven multiplied by the sum of nine and a number.
ii. The sum of four and the number.
The sum of two (63 + 7x) and (4 + x) quantities will be 8x + 67.
What is Algebra?Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.
The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.
Let 'x' be the number.
The first number is given as,
⇒ 7(9 + x)
⇒ 63 + 7x
The second number is given as,
⇒ 4 + x
Then the sum of two numbers is given as,
⇒ 63 + 7x + 4 + x
⇒ 8x + 67
The sum of two (63 + 7x) and (4 + x) quantities will be 8x + 67.
More about the Algebra link is given below.
https://brainly.com/question/953809
#SPJ1
suppose that an airline quotes a flight time of 130 minutes between two cities. furthermore, suppose that historical flight records indicate that the actual flight time between the two cities, x, is uniformly distributed between 104 and 156 minutes. letting the time unit be one minute, (a) write the formula for the probability curve of x. (c) find p(122 < x < 142). (round your answer to 4 decimal places.) (d) find the probability that a randomly selected flight between the two cities will be at least 6 minutes late. (round your answer to 4 decimal places.)
We can round the answer to 4 decimal places:
P(x > 136) ≈ 0.3846
(a) The probability curve for a uniform distribution is given by the formula:
f(x) = 1/(b - a)
where 'a' and 'b' are the lower and upper limits of the distribution, respectively.
In this case, a = 104 and b = 156.
f(x) = 1/(156 - 104)
f(x) = 1/52
So, the probability curve for x is f(x) = 1/52.
(c) To find P(122 < x < 142), we first need to find the width of this interval:
Width = 142 - 122 = 20
Next, we multiply the width by the probability curve, f(x):
P(122 < x < 142) = 20 * (1/52) = 20/52
Now, we can round the answer to 4 decimal places:
P(122 < x < 142) ≈ 0.3846
(d) To find the probability that a randomly selected flight will be at least 6 minutes late,
we first need to find the interval for late flights.
Since the quoted flight time is 130 minutes,
A flight that is at least 6 minutes late will have a flight time greater than 136 minutes.
We are now looking for P(x > 136).
To do this, we first find the width of the interval between 136 and the upper limit (156):
Width = 156 - 136 = 20
Now, we multiply the width by the probability curve, f(x):
P(x > 136) = 20 * (1/52) = 20/52.
For similar question on decimal.
https://brainly.com/question/15182181
#SPJ11
9. Difference between the place values of "1" in 3116365 is
Kelsey buys several pairs of uniform pants for $17.95 each, and a sweater for $24.
Jeana shops at a different store and buys several pairs of uniform pants for $18.95 each, plus a sweater for $18.
They set up the situation with the equation below, where x is the number of pairs of pants.
Is there a situation in which they pay the same amount for their purchases?
Which statements are true? Select all that apply.
17.95x + 24 = 18.95x + 18
There are no solutions to the equation.
There is one solution to the equation.
There are infinitely many solutions to the equation.
There is never a situation in which both girls will pay the same amount for their purchase.
The girls will both pay the same if they buy six pairs of pants and one sweater.
The girls will pay the same amount for any number of pants and one sweater.
Considering the definition of an equation and the way to solve it, the girls will both pay the same if they buy six pairs of pants and one sweater.
Definition of equationAn equation is the equality existing between two algebraic expressions connected through the equals sign in which one or more unknown values appear.
The solution of a equation means determining the value that satisfies it. In this way, by changing the unknown to the solution, the equality must be true.
To solve an equation, keep in mind:
When a value that is adding, when passing to the other member of the equation, it will subtract.If a value you are subtracting goes to the other side of the equation by adding.When a value you are dividing goes to another side of the equation, it will multiply whatever is on the other side.If a value is multiplying it passes to the other side of the equation, it will pass by dividing everything on the other side.This caseBeing "x" the number of pairs of pants, you know that:
Kelsey buys several pairs of uniform pants for $17.95 each, and a sweater for $24.Jeana shops at a different store and buys several pairs of uniform pants for $18.95 each, plus a sweater for $18.The equation in this case is:
17.95x + 24 = 18.95x + 18
Solving:
24 -18= 18.95x - 17-95x
6= x
Finally, this means that Kelsey and Jeana pay the same if they buy six pairs of pants and one sweater.
Learn more about equations:
brainly.com/question/4983716
brainly.com/question/13314678
#SPJ1
50% of 200: fifty percent of two-hundred is?
Answer:
100
Step-by-step explanation:
Answer:
its 100
Step-by-step explanation: