it means mean in statistics. I'm not sure tho..
Find the missing side of each right triangle (Pythagorean’s #Theorem)
Answer:
3
Step-by-step explanation:
The formula for the Pythagorean's Theorem is a^2 + b^2 = c^2, so first you know that hypotenuse is the longest side or the opposite side from which the right angle is which in this case is the 6 so you are looking for a leg rather then the hypotenuse which means we are going to be doing subtraction.
a^2 + b^2 = c^2
√27^2 - b^2 = 6^2
27 - b^2 = 36
-27 -27
b^2 = 9
b^2 = √9
b = 3Which of the following fractions is equivalent to -84 in the least common
terms? -190
Answer:
Step-by-step explanation:
b i think if not it should be a sorry if im wrong
what is the reciprocal of 3/2?
please text it and not upload a pic thank you
PLS help ASAP DUE IN 20 MINUTES I CANT FIGURE IT OUT
Answer:
x=8
Step-by-step explanation:
if you multiply 6 by 8 and subtracted by 3 it will equal 45
A study was conducted on students from a particular high school over the last 8 years. The following information was found regarding standardized tests used for college admitance. Scores on the SAT test are normally distributed with a mean of 1070 and a standard deviation of 204. Scores on the ACT test are normally distributed with a mean of 19.1 and a standard deviation of 5.2. It is assumed that the two tests measure the same aptitude, but use different scales.
(A) If a student gets an SAT score that is the 51-percentile, find the actual SAT score. Round answer to a whole number. SAT score =
(B) What would be the equivalent ACT score for this student? Round answer to 1 decimal place. ACT score =
(C) If a student gets an SAT score of 1417, find the equivalent ACT score. Round answer to 1 decimal place. ACT score =
Answer:
a) SAT score = 1075
b) ACT score = 19.2.
c) ACT score = 27.9.
Step-by-step explanation:
Normal Probability Distribution:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.
(A) If a student gets an SAT score that is the 51-percentile, find the actual SAT score
SAT scores have mean 1070 and standard deviation 204, so [tex]\mu = 1070, \sigma = 204[/tex]
51th percentile means that Z has a p-value of 0.51, so Z = 0.025. The score is X. So
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]0.025 = \frac{X - 1070}{204}[/tex]
[tex]X - 1070 = 0.025*204[/tex]
[tex]X = 1075[/tex]
SAT score = 1075.
(B) What would be the equivalent ACT score for this student?
ACT scores have mean of 19.1 and standard deviation of 5.2, which means that [tex]\mu = 19.1, \sigma = 5.2[/tex]. The equivalent score is X when Z = 0.025. So
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]0.025 = \frac{X - 19.1}{5.2}[/tex]
[tex]X - 19.1 = 0.025*5.2[/tex]
[tex]X = 19.2[/tex]
ACT score = 19.2.
(C) If a student gets an SAT score of 1417, find the equivalent ACT score.
Z-score for the SAT:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{1417 - 1070}{204}[/tex]
[tex]Z = 1.7[/tex]
Equivalent score on the ACT:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]1.7 = \frac{X - 19.1}{5.2}[/tex]
[tex]X - 19.1 = 1.7*5.2[/tex]
[tex]X = 27.9[/tex]
ACT score = 27.9.
consider a triangle ABC like the one below suppose that a=23 b=14 c=27 (the figure is not drawn to scale.) solve the triangle. carry your intermediate computations at least four decimal places, and round your answers to the nearest tenth. If there is more than one solution use the button labeled "or"
Answer:
find abc
Step-by-step explanation:
Complete the first step in the solution.
4x=24
Answer:
x would be equal to 6
Step-by-step explanation:
24 would be divided by 4 because it's 4x
Answer:
x = 24 ÷ 4 or 24/4
Step-by-step explanation:
In order to isolate the variable, you multiply both sides by the reciprocal of 4, which is 1/4.
What are the solutions of the compound inequality?
Graph the solutions.
2x-2<-12 or 2x+3>7
Answer:
x < -5 or x > 2 , and because or can be in either, doesn't and literally can't be in both
Step-by-step explanation:
When you simplify 2x-2>12, it's like an algebra problem where you just add 2 to both sides and then divide by 2. Same for 2x+3>7, except you subtract 3 and then divide by 2
how do you solve simple linear equations?
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Explanation:
The rules of equality tell you that you can do anything you like to an equation, as long as you do the same thing to both sides of the equal sign. This is the essence of Algebra, so is worth remembering. My teacher summarized it as "keep the equal sign sacred."
__
"Simple linear equations" come in several varieties. They are sometimes called "one-step", or "two-step", or "three step" linear equations, depending on how many steps are required to solve them. In what follows, we're using "x" as the variable, and the letters a, b, c, d as constants.
One-step
In general, the "one step" will be either an addition or a multiplication.
x + a = b . . . . an addition equation
ax = b . . . . . . a multiplication equation
The key in any case is to look at what is done to the variable and use an inverse operation to "undo" it. The opposite of addition is addition of the additive inverse (add the opposite). This is also called subtraction. For the addition equation, this looks like ...
x + a - a = b - a . . . . . . add (-a) to both sides (or subtract 'a')
x = b - a . . . . . . . . . . . the solution
The opposite of multiplication is multiplication by the multiplicative inverse (the reciprocal) This is also called division. For the multiplication equation, this looks like ...
ax(1/a) = b(1/a) . . . . . multiply by (1/a) on both sides (or divide by 'a')
x = b/a . . . . . . . . . . . the solution
__
Two-step
As with one-step linear equations, two-step equations come in some different forms.
ax +b = c
ax +b = cx
a(x +b) = c
In general, the two steps are an addition step and a multiplication step, not necessarily in that order. You will notice that the first step can transform the equation to a "one-step" equation. As before, inverse operations are involved, and whatever is done is done to both sides of the equal sign.
ax +b = c ⇒ ax = (c -b) . . . . subtract b to get a multiplication equation
In this next, we have the variable on both sides of the equal sign. we can put the variable on one side of the equal sign by adding the opposite of the term we don't want where it is. Leaving the constant alone, we can add (-ax) to both sides to get ...
ax +b = cx ⇒ b = cx -ax ⇒ b = (c -a)x
When you have numbers, you can go directly to (c-a)x by "combining terms". This is now the one-step multiplication equation.
Finally, another 2-step form is ...
a(x +b) = c ⇒ x +b = c/a . . . . . divide by 'a' to get an addition equation
This last equation can also be solved by using the distributive property first.
ax +ab = c . . . . . still a 2-step equation, now of the first type
__
Three-step
The most typical "3-step" linear equation is of the form ...
ax +b = cx +d
where both variables and constants are on both sides of the equal sign. As you may have noticed above, we prefer to have variables on one side and constants on the other side. So, add the opposite of the term you don't want where it is (to both sides, of course).
If we want variables on the left and constants on the right, we can add -cx and -b. The "3 steps" assume you do these as separate operations.
ax +b -cx = cx +d -cx ⇒ (a-c)x +b = d . . . a two-step equation
(a-c)x +b -b = d -b ⇒ (a-c)x = d-b . . . . a one-step multiplication equation
_____
Additional comments
There are some choices you can make that will tend to reduce errors. One of them involves selection of the variable term you want to eliminate (add the opposite of). Generally, if you choose the term with the lowest (most negative, left-most on the number line) coefficient, adding its opposite will result in a positive coefficient for the remaining variable term. Then when you divide by that coefficient, you're dividing by a positive number. Most folks perform arithmetic with fewer errors when they're working with positive numbers.
The general approach to any "solve for" situation is to look at what is done to the variable you're solving for. The Order of Operations is a useful lens for looking at this. When you list the operations, your "undo" sequence will start with the last operation on the list, and work backward.
Further note: your total comfort with doing arithmetic with any kind of numbers (integers, fractions, mixed-numbers, decimals, scientific notation, positive or negative) will aid you immensely. Always be careful with minus signs. They tend to get lost, forgotten, ignored, Be sure they don't.
Mr. Aarav paid a total of $588 to stay in a hotel and park his car for 3 nights. Each night, the hotel charged Mr. Aarav h dollars for a room and $15 for parking. The equation shown below represents the total amount, in dollars, Mr. Aarav paid for the 3 nights. 3(h + 15) = 588 How much was Mr. Aarav charged for the room for 1 night? brainly
Answer: 181
Step-by-step explanation:
Between which x-values and y-values does the cluster lie?
Answer:
Here is the picture
Step-by-step explanation:
The number lies between x-values 4 and 6 and y-values 6 and 9.
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.
Given that scatter plot lies in quadrant 1 of a coordinate plane, and the 14 points are plotted in the first quadrant.
We need to find the range of x and y values for this scatter plot.
The x values of the 14 points are given as;
2, 4, 4,1, 5, 5, 5, 5, 6, 6, 7, 8, 9.5, 9.5
The y values of the 14 points are given as;
5, 6, 9, 7.2, 6, 6.8, 8, 9, 7, 8.5, 10, 10.5, 9.5, 11.4
We can conclude that that most of the points are clustered between x-values 4 and 6 and y-values 6 and 9.
Therefore, the points are clustered between the x-values 4 and 6 and y-values 6 and 9.
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The complete question is
Select the correct answer. Scatter plot in quadrant 1 of a coordinate plane. 14 points are plotted at (2, 5), (4, 6), (4, 9), (4.1, 7.2), (5, 6), (5, 6.8), (5, 8), (5, 9), (6, 7), (6, 8.5), (7, 10), (8, 10.5), (9.5, 9.5), and (9.5, 11.4). Between which x-values and y-values does the cluster in this scatter plot lie? A. It lies between x-values 2 and 4 and y-values 4 and 6. B. It lies between x-values 4 and 6 and y-values 9 and 10. C. It lies between x-values 4 and 6 and y-values 6 and 9. D. It lies between x-values 7 and 9 and y-values 10 and 11.
9. Given a circle with a radius of 6, determine its sector area with an angle measure of 120°.
Answer:
2160 square units
Step-by-step explanation:
Given data
Radius= 6 units
Angle= 120°
Area of the sector is given as
Area of sector= r^2* ∅/2
Area of sector= 6^2*120/2
Area of sector= 36*60
Area of sector= 2160 square units
Evaluate y = 3x for x = 2.
Answer:
y2
Step-by-step explanation:
this is my answer
i hope it helps you
James says hello to every fourth grown every 6 boy he meets how often does James say hello to both the boy and girl together
Answer:
Six multipled by four to get how many girls and boy he will sayhrllo to.
Find the area of the shaded region in the drawing round to the nearest tenth show all work
Answer:
The area of the shaded region is:
488 ft^2.Step-by-step explanation:
First, we're gonna find the area of the whole rectangle and next we can subtract the area of the triangles in the corners, we use the next formula:
Area of a rectangle = width * heigthAnd we replace the measurements in the picture (32 ft and 16 ft):
Area of a rectangle = 16 ft * 32 ftArea of a rectangle = 512 ft^2Now, we must calculate the area of a triangle, this can be made by this formula:
Area of a triangle = (base * height) / 2We can replace the values we have in the picture (4 ft and 6 ft), then:
Area of a triangle = (4 ft * 6 ft) / 2Area of a triangle = (24 ft^2)/ 2Area of a triangle = 12 ft^2As you can see in the picture, we have to subtract two triangles with the same measurements, by this reason, we multiply the area of the triangle by two and we'll obtain the area we must subtract:
Area to subtract = (12 ft^2) * 2Area to subtract = 24 ft^2At last, we take the area of the whole rectangle and subtract the area of the triangles:
Area of the shaded region = 512 ft^2 - 24 ft^2Area of the shaded region = 488 ft^2The area of the shaded region is 488 ft^2.
WILL GIVE BRAINIEST!!
Answer:
its b
Step-by-step explanation:
thankkkkk me later
The graph of which function passes through (0,3) and has an amplitude of 3?
O f(x) = sin(x) + 3
O fx) - cos(x) + 3
O fx) - 3 sin(x)
O fx) - 3 cos(x)
Answer:
D^^^
Step-by-step explanation:
The graph of the function is f ( x ) = 3cos ( x )
What is Equation of Graph of Polynomials?Graphs behave differently at various x-intercepts. Sometimes the graph will cross over the x-axis at an intercept. Other times the graph will touch the x-axis and bounce off.
Identify the even and odd multiplicities of the polynomial functions' zeros.
Using end behavior, turning points, intercepts, and the Intermediate Value Theorem, plot the graph of a polynomial function.
The graphs cross or are tangent to the x-axis at these x-values for zeros with even multiplicities. The graphs cross or intersect the x-axis at these x-values for zeros with odd multiplicities
Given data ,
Let the equation be represented as A
Now , the value of A is
f ( x ) = 3cos ( x ) be equation (1)
On simplifying , we get
The function passes through the point P ( 0 , 3 )
So , when x = 0
f ( 0 ) = 3 cos ( 0 )
f ( 0 ) = 3
And , the value of y = 3
The amplitude of the function is y-max = 3
Hence , the function is f ( x ) = 3cos ( x ) and the graph is plotted
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The product of two positive integer numbers is 40 and the sum of the same two numbers is 13.
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Answer:
5 and 8
Step-by-step explanation:
Factor pairs that make 40 are ...
40 = 1×40 = 2×20 = 4×10 = 5×8
The pair that has a sum of 13 is 5 and 8.
In the diagram below which ratio is equal to sin R
4 1/4 ÷2equals please help
Answer:
2.125
Step-by-step explanation:
Answer:17/8, 2 1/8, and 2.125
Step-by-step explanation:
Convert to improper fraction then multiply by the reciprocal!
Find the linear regression equation for the transformed data. Х у Log y 1 1 0 2 21 1.322 3 121 2.083 4 621 2.793 5 3121 3.494 A. log(y) = -0.599x+0.846 B. log(y) = -0.846 x +0.599 O ( C. log(y) - 0.846x-0.599 D. log(y) = 0.599x-0846
Answer:the answer is c.
Step-by-step explanation:
The linear regression equation for the transformed data is log(y) = -0.846 x +0.599. The correct option is B.
What is linear regression?Linear regression is a statistical method for determining the relationship between two quantitative variables, typically denoted by the letters x and y. The goal of linear regression is to find a linear equation that can predict y based on x.
To find the linear regression equation for the transformed data, we must first transform the y-values by taking each value's logarithm base 10.
Then we can use the linear regression equation to calculate the slope and y-intercept of the best-fit line.
The linear regression equation for the transformed data is:
log(y) = -0.846x + 0.599
Therefore, the correct answer is B. log(y) = -0.846x + 0.599.
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In each of the following equations, find all the integers x satisfying the equation:
a. | x-20 | = 20
b. | x | + 7 = 16
c. | 15x | = | -15x |
Answer:
b
Step-by-step explanation:
The number of red tiles in a sack is 5 more than 3 times the number of green tiles in the sack. The
sack contains 35 red tiles, How many green tiles does the sack contain?
Pls help I need this pls help have a good day
A.12
B.10
C.9
D.not here
Answer:
B. 10
Step-by-step explanation:
10 x 3 = 30+5 = 35
III NEEDDD HEELLLPPPPPPPPPP!!!!!!!!! IVE TRIED ASKING THIS TWICE AND IVE BEEN WAISTING POINNNTTSSSSS!!!!!! WILLL MARK BRAINLIESTTTTT PLLLEEAASSEE HEELLLLPPPP!!!!!!!!
Select the expressions (more than one) that are polynomials.
options:
−2x^3+2x+4
x^2/7+1
x^−3+4x
6x−x^3+4x^2
Polynomials cannot have division or a negative integer exponent.
−2x^3+2x+4 is a polynomial
x^2/7+1 is not a polynomial (division operation)
x^−3+4x is not a polynomial (negative exponent)
6x−x^3+4x^2 is a polynomial
A cyclist travels 4.9 km in 30 minutes.
What is his average speed in km/h?
Answer:
9.8 km/h
Step-by-step explanation:
Since there are 60 minutes in an hour, we can find his speed in km/h by multiplying 4.9 by 2.
4.9(2)
= 9.8
This means that he will travel 9.8 km in 60 minutes (1 hour).
So, his average speed is 9.8 km/h
Is (3, –2) a solution for the following system? Yes or No x + y = 1 2x + 3y = 1
Answer:
NO
Step-by-step explanation:
Plugging in 3 for X and -2 for Y
X + Y = 12X _ 3Y = 1
3 + -2 = 12*3 + 3 * -2 = 1
1 = 36 + 3 * -2 = 1
1 = 36 + -6 = 1
1 = 30 = 1
So NO, (3, -2) is not a solution.
The Unit Circle
What is cos 180°?
a. 0
b. 1
c. -1
d. 1/2
Please select the best answer from the choices provided
Answer:
C. -1
Step-by-step explanation:
I calculated it logically
Answer:
-1
Step-by-step explanation:
cos = opp/hyp
At 180º
adj = -1
hyp = 1
Cos 180 = -1/1 = -1
Solve for the missing side ?
Answer:
BC = x = 8.12
AB = 15.33
Step-by-step explanation:
The missing sides of the right triangle is AB and BC;
Step 1: solve for BC using the following formula;
[tex]tan(\theta) = \frac{Opposite \ side}{Adjacent \ side} \\\\tan (32)= \frac{BC}{AC} \\\\tan(32) = \frac{x}{13} \\\\x = 13 \times tan(32) \\\\x = 8.12 \[/tex]
Step 2; solve for AB using a trig ratio or Pythagoras theorem;
[tex]cos (\theta) = \frac{Adjacent \ side }{Hypotenuse \ side} \\\\cos (32) = \frac{AC}{AB} \\\\cos (32) = \frac{13}{AB} \\\\AB = \frac{13}{cos (32)} \\\\AB = 15.33[/tex]
NO LINCKS !!!!!!!! sing the order of operations, which operation should you perform last to evaluate the expression below?
(
7
×
4
)
+
(
10
÷
2
)
×
(
14
.
7
−
9
)
A.
multiplication
B.
division
C.
addition
D.
subtraction
Answer:
it A because all of them can multipcation
The Sine Function
Interpret the following sine regression model.
y = 0.884 sin(0.245 x - 1.093) + 0.400
What is the value of C in this equation?
a. 0.400
b. 1.093
c. 0.245
d. 0.884
Please select the best answer from choices provided
Answer:
B. 1.093
Step-by-step explanation:
I calculated it logically
