A program evaluator for a large school district wants to know how much intelligence varies in the elementary schools. She selects one classroom at each grade level in each elementary school and administers an intelligence test to the children in those classrooms. If the program evaluator wants to find out which school has the highest intelligence level, which of the following should she calculate for each school?
a. The variance
b. The standard deviation
c. The sum of the deviations
d. The mean
find the value of x
Answer:
x= 11
Step-by-step explanation:
=> 8x+5x+37 = 180° { angle sum property }
=> 13x +37 = 180°
=> 13x = 180-37
=> 13x = 143
=> x = 143/13
=> x= 11
The required value of x in the given triangle is 11, for the triangle
The sum of angles 8x, 5x, and 37 degrees is equal to 180 degrees (using the angle sum property).
Adding 8x and 5x together gives 13x, so the equation becomes :
13x + 37 = 180 degrees.
Subtracting 37 from both sides of the equation gives:
13x = 180 - 37.
Simplifying the right side gives:
13x = 143.
To solve for x, we divide both sides of the equation by 13, resulting in:
x = 143/13.
Finally, simplifying the fraction gives:
x = 11.
Thus, the required value of x in the given triangle is 11, for the triangle.
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In how many different ways can a badminton team with 2 members, be chosen from a group of 6 people?
Answer:
15 ways
Step-by-step explanation:
We need 2 people from a group of 6.
Pick a random person from the 6, then group them with another person. We have 5 ways to do so.
Now, we will pick a person to group with the person who got grouped with the first person, except the first person themself. We have 4 ways to do so
Keep repeating, we will have 5 + 4 + 3 + 2 + 1 = 15 ways to choose 2 people out of 6.
pls help me answer 2.2.3 and 2.2.4
(2.2.4 needs to be converted)
ill give brainstorm
[tex]\bold{\huge{\underline{ Solution }}}[/tex]
Analysis of graph :-We have given one graph which is plot between distance and time. where time is in minutes and distance is in seconds.
According to the graph
For the first 5 minute ( O to A) , The distance is continously increasing 2m / per minute . For the 5 minute that is from 5 minute to 13 minute ( A to B) both marellize and her dog wally moving with the constant speed .For next 3 minutes that is from 10 minutes to 13 minutes ( B to C) , The distance is continously decreasing with time .For next 3 minutes that is from 13 to 16 minutes ( C to D) , Again they moved with constant speed .For next 6 minute that is from 16 to 21 minutes ( D to E) . Again, There distance is increasing with time .Again For next 4 minutes that is 21 to 25 minutes , they are moving with constant velocity .Let's Begin :-1) Between O and A
The marellize and wally when moving between O to A , The distance is constantly increasing with time. The graph is Straight line2) Between A and B
The marellize and wally when moving between A to B, The distance remains the same with time that is they moving with constant speed. The graph is constant or steady3) Between B to C
The marellize and wally when moving between B to C, The distance is constantly decreasing with time .The graph is straight line but it follows decreasing function .4) For covering the First 6 km ,
According to the graph,
For covering first 6 km, They took 3 minutes.5) No, Marellize and wally walk does not from where they have started.
According to the graph
It is end at 5 m instead of 0m .The line between O and A is a straight line graph while A and B is a constant graph.
What is a graph?A graph simply means a pictorial representation of information or data that's given.
In this case, O and A is a straight line graph while A and B is a constant graph. A straight line graph illustrates a linear relationship between between the x and y values.
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There is a spinner with 15 equal areas, numbered 1 through 15. If the spinner is spun one time, what is the probability that the result is a multiple of 5 and a multiple of 3?
Answer:
6.67%
Step-by-step explanation:
Find the amount of numbers that are multiples of 3 and 5
multiples of 3 = 3, 6, 9, 12, 15
multiples of 5 = 5, 10, 15
only 15 overlaps between these two groups, so it is one number
the total number of available numbers is 15
1/15 = 0.0667
multiply this by 100 to get a percentage
0.0667 * 100 = 6.67%
Pls answer quicklyy
Answer: 99cm^2
Step-by-step explanation:
The area of a parallelogram is the base*the height.
The base is 4+5 = 9 cm.
Therefore, the area of a parallelogram is 9*11 = 99cm^2
Answer:99cm^2
Step-by-step explanation:
Sally’s baked bean recipe calls for 5 pounds of sugar and 20 pounds of dried beans. How many pounds of sugar are needed for a recipe using 1 pound of dried beans?
Answer:
you will need 0.25 pound of sugar
what is 12 - 10 1/8 need helpp
Answer:
1.875
Step-by-step explanation:
Because your - 12 from 10=2 and subtracting another 1/8 so your answer is
10 7/8
And 7/8=87.5 or 0.875 or just 7/8.
So put those together 1.875 or 10 7/8
Hope this helps have a great day:)
Answer:
1.875 or 10 7/8
Step-by-step explanation:
because your - 12 from 10=2 and because your subtracting so your answer is 10 7/8 and 7/8 =87.5 or 0.875 or just 7/8 so put those together 1.875 or 10 7/8
Scientists tag and release a group of salmon after they hatch. Later, they catch a sample of salmon that return to the river and check them for tags. In one sample, 40 out of 800 returning salmon have tags. What is the best prediction of the total number of tagged salmon in a sample of 2000? PLEASE HELP IF U DONT IMA BE SO MAD
The best prediction of the total number of tagged salmon in a sample of 2000 is 100.
PredictionsTo determine what is the best prediction of the total number of tagged salmon in a sample of 2000, the following calculation must be performed:
800 = 402000 = X2000 x 40 / 800 = X80000 / 800 = X100 = XTherefore, the best prediction of the total number of tagged salmon in a sample of 2000 is 100.
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7 (2.268- 2.036) ? answer I need help
Answer:
1.624
Step-by-step explanation:
substract 2.268-2.036, and then times 7.
The length of a rectangle is increasing at a rate of 4 cm/s and its width is increasing at a rate of 4 cm/s. When the length is 5 cm and the width is 4 cm, how fast is the area of the rectangle increasing
Let us set up the following variables:
⎧
⎪
⎪
⎪
⎪
⎨
⎪
⎪
⎪
⎪
⎩
l
Length of Rectangle (cm)
w
Width of Rectangle (cm)
A
Area of Rectangle (
c
m
2
)
t
Time (s)
We are told that:
d
l
d
t
=
8
cm/s (const), and,
d
w
d
t
=
3
cm/s (const)
The Area of the rectangle is:
A
=
l
w
Differentiating wrt
t
(using the product rule) we get;
d
A
d
t
=
(
l
)
(
d
w
d
t
)
+
(
d
l
d
t
)
(
w
)
∴
d
A
d
t
=
3
l
+
8
w
So when
l
=
20
and
w
=
10
⇒
d
A
d
t
=
3
⋅
20
+
8
⋅
10
∴
d
A
d
t
=
60
+
80
∴
d
A
d
t
=
140
cm
2
/
s
The annual profits for a company are given in the following table, where x represents the number of years since 2002, and y represents the profit in thousands of dollars. Write the linear regression equation that represents this set of data, rounding all coefficients to the nearest hundredth. Using this equation, find the projected profit (in thousands of dollars) for 2010, rounded to the nearest thousand dollars. what is it
Answer:
2012
Step-by-step explanation:
10 2 12
Ryan practiced piano for 3/10 of an hour and soccer for 1/2 an hour. In simplest form, how long did he practice altogether?.
Answer:
4/5 of an hour
Step-by-step explanation:
1/2 = 5/10 so 5/10 + 3/10 = 8/10. Simplify by 2 and you get 4/5.
can you tell me the answer?
Answer:
14.72 (possibly)
Step-by-step explanation:
so the mean is average
you add all then divide by how many (i think)
sooo
(13.4 + 16.2 + 15 + 16.5 + 12.5) / 5
73.6 / 5
14.72
Answer:
73.6
Step-by-step explanation:
So you simply add the numbers given and then divide them of the amount of numbers they're to get your answer.
Probability, help, please
Problem 1
Answer: Choice A) 1/3-------------------
Explanation:
The notation "P(tune-ups | AC repair)" is the same as saying "P(tune-ups given AC repair)".
The "given" means we only focus on the "AC repair" circle.
Add up the numbers in that circle to get: 1+3+2+0 = 6
There are 6 ASE certified mechanics that can do AC repair.
Of those 6 people, only 2+0 = 2 can do engine tune-ups. Note I added the values in the "AC repair" and "tune-ups" overlapped region.
Therefore, we get the probability 2/6 = 1/3
==========================================================
Problem 2
Answer: B) 2/3-------------------
Explanation:
First, we'll add the numbers found in either the "brakes" or "tune-ups" circles.
4+1+2+2+3+0 = 12
There are 12 mechanics that can handle brakes or tune-ups or both.
Now add up all of the numbers shown regardless of their location. We have 4+1+3+2+2+0+3+3 = 18 mechanics total.
So,
m = number who can do brakes or tune-ups or both
m = 12
n = number of mechanics total
n = 18
And,
P(brakes or tune-ups) = m/n
P(brakes or tune-ups) = 12/18
P(brakes or tune-ups) = (6*2)/(6*3)
P(brakes or tune-ups) = 2/3
Which graph shows the solution to the system of linear inequalities? y< 2x-5 y>-3x + 1
Answer:
it's my graph listed above
What is the length of the hypotenuse of the triangle?
StartRoot 20 EndRoot cm
StartRoot 23 EndRoot cm
StartRoot 40 EndRoot cm
StartRoot 58 EndRoot cm
Answer:
StartRoot 58 EndRoot cm
THE ANSWER IS D
Step-by-step explanation:
Classify the following triangle. Check all that apply.
. A. Equilateral
.
B. Scalene
. C. Right
D. Acute
E. Obtuse
. F. Isosceles
Answer:
right angle and acute
Step-by-step explanation:
because one angle is 90° and also two sides of the triangle are equal
The given triangle is Right angled triangle and Isosceles triangle.
What is triangle ?
Triangle is a two dimensional shape having three side and sum of all angles is equals to [tex]360^0[/tex].
We have,
A triangle with an angle of [tex]90^0[/tex] and two equal sides.
So,
We know that,
When a triangle have any angle equals to [tex]90^0[/tex] then it is Right angled triangle.
Now,
When a triangle have any two sides equal then it is Isosceles triangle.
So,
From the above mentioned statements we can say that triangle is Right angled and Isosceles triangle.
Hence, we can say that the given triangle is Right angled triangle, Isosceles triangle.
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2. A sales representative at a Macbook store receives a bonus of BD40 for every Macbook he sells. He wants to make a BD500 in bonuses next month. Write and solve an inequality to find the minimum number of Macbook he must sell.
Complete the expression that is equivalent to m + m + m + m.
__m
Answer:
4m
Step-by-step explanation:
please mark me as brainlest is
Answer:
4m
Step-by-step explanation:
m + m + m + m
We have 4 letter m's
4m
Solve for F if C = 10°.
F = C + 32
Answer:
The answer is 50°
Step-by-step explanation:
Given;°C = 10°°F = 9/5C + 32Now, Substitute C = 10
°F = 9/5C + 32
°F = 9/5(10) + 32
°F = 9 × 2 + 32
°F = 18 + 32
°F = 50
Thus, The value of °F is 50°
TheUnknownScientist 72
Answer:
the answer is 40
Step-by-step explanation:
9 divided by 5 times 10 will give 18
so 18 when added to 32 gives 40
what is (2x^2y^3)(4xy^-2)
Answer: 23x3y
step 1 ((2 • (x2)) • (y3)) • 22xy(-2)
step 2 (2x2 • y3) • 22xy(-2)
step 3 3.1 x2 multiplied by x1 = x(2 + 1) = x3
3.2 y3 multiplied by y(-2) = y(3 + (-2)) = y1 = y
Multiplying exponents:
3.3 21 multiplied by 22 = 2(1 + 2) = 23
solve for x
15x + 3 = 50
x = 3.133
Step-by-step explanation:
15x + 3 = 50
15x = 50 - 3
15x = 47
x = 47/15
x = 3.133
Hope it helps you!!Hello.
First, let's subtract 3 from both sides.
15x+3-3=50-3
15x=47
Now, in order to figure out what x equals, we need to divide both sides by 15:
[tex]\displaystyle\frac{15x}{15} =\frac{47}{15}[/tex]
[tex]x=\displaystyle\frac{47}{15}[/tex]
And we're done!
I hope it helps.
Have a great day.
[tex]\boxed{imperturbability}[/tex]
Explain how this model represents the Pythagorean Theorem.
Answer:
Phythagorean Theorem - a^2 + b^2 = c^2
Step-by-step explanation:
It represents the Pythagorean Theorem because in the model there is a right triangle and you can use the phythagoren theorem with any right triangle that has at least two known sides.
Since you know all the sides in this diagram, this would be true:
6^2 + 8^2 = 10^2
a cone and a cylinder with their dimensions are shown in the diagram
(i cant take a picture sadly)
which measurement is the closest to the difference between the volumes of these figures in cubic inches?
A: 75 in.^3
B: 226 in.^3
C: 101 in.^3
D: 151 in.^3
The difference between the volumes of these figures is 25.1 in³
Volume
Volume is the amount of space occupied by a three dimensional object or figure.
The volume of a cone is given by:
Volume = (1/3) * π * radius² * height = (1/3) * π * (4²) * 12 = 201.1 in³
The volume of a cylinder is given by:
Volume = π * radius² * height = π * (3²) * 8 = 226.2 in³
The difference in volume = 226.2 - 201.1 = 25.1 in³
The difference between the volumes of these figures is 25.1 in³
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Answer:
A. 75 inches
Step-by-step explanation:
Assuming that the attached picture is the question you are referring to, the answer is 75.
For the volume of the cone, [tex]\frac{1}{3}[/tex] of the bh = 16
For the cylinder, the volume is 48.
48 - 16 = 32
75 is the closest to 32 from all the options.
Muluply the expressions below. Then simplify if possible 2x(3x - 4) b. (x+3)(2x-5) (2.1+5)(2x-5) d. X(2x+1)(-3)
Answer:
What is the expression? All I see are the answers.
Step-by-step explanation:
bro someone please help me with his question!!!!
Nine friends want to play a game. They must divide into three teams, with three people on each team. In how many ways can they do it?
Step-by-step explanation:
1.they should divide each person into 3 teams
Answer: 280
Step-by-step explanation: So you have 9 people. One out of those 9 people could go in any of the spots for participants. You could start off with 9*8*7 because you want to work your way down and it doesn't matter which order but just the number of people in each group. 9*8*7 is one group, 6*5*4 is the second group and 3*2*1 is the third group. Now, you want to take each of those equations and divide them by 3!. You do this because there are 3 teams and 9 people are being distributed between them.
9*8*7 6*5*4 3*2*1
-------- = 84 ----------- =20 and ----------- =1
3! 3! 3!
Now that you have 84, 20 and 1, you multiply them and once again divide the product by 3! or cancel. You will get 14*20*1 =280
Hope it helps!
the figure shows a circle within a square. Find the circumference of the circle let π = 3.14.
The side of the square = 16 in
When a circle is inscribed in a square, the length of each side of the square is equal to the diameter of the circle.
So, the diameter of the circle is equal to 16 in => radius = 8 in
Circumference = 2πr = 2π8 = 16π = 50.24
Simplify 81p6q2÷3p2q5 HELPPP
Answer:
[tex]\displaystyle \frac{81\, p^{6}\, q^{2}}{3\, p^{2} \, q^{5}} = \frac{27\, p^{4}}{q^{3}}[/tex].
Step-by-step explanation:
Make use of the fact that for any [tex]x \ne 0[/tex] and integer [tex]n[/tex]:
[tex]\displaystyle \frac{1}{x^{n}} = x^{-n}[/tex].
For example, in this question:
[tex]\displaystyle \frac{1}{p^{2}} = p^{-2}[/tex].
[tex]\displaystyle \frac{1}{q^{5}} = q^{-5}[/tex].
Thus, the original expression would be equivalent to:
[tex]\begin{aligned}& \frac{81\, p^{6}\, q^{2}}{3\, p^{2} \, q^{5}} \\ =\; & \frac{81}{3}\, (p^{6}\, p^{-2})\, (q^{2}\, q^{-5}) \\ =\; & 27\, (p^{6}\, p^{-2})\, (q^{2}\, q^{-5})\end{aligned}[/tex].
Also make use of the fact that for any [tex]x \ne 0[/tex], integer [tex]m[/tex], and integer [tex]n[/tex]:
[tex]x^{m}\, x^{n} = x^{m + n}[/tex].
Thus:
[tex]\begin{aligned}& 27\, (p^{6}\, p^{-2})\, (q^{2}\, q^{-5}) \\=\; & 27\, p^{6 + (-2)}\, q^{2 + (-5)} \\ =\; & 27\, p^{4}\, q^{-3} \\ =\; & \frac{27\, p^{4}}{q^{3}}\end{aligned}[/tex].
