Answer:
135.6
i think
Step-by-step explanation:
Emi evaluated (46 - 78)² as -(32)². The variance of the given data is 274. Therefore, option C is the correct answer.
Given that, the population data set is 87, 46, 90, 78, and 89.
Here, mean = [tex]\bar x[/tex] =78 and n=5
We know that, mean [tex]\bar x=\frac{\sum x_i}{n}[/tex] and variance = [tex]\sigma^2=\frac{\sum (x_i-\bar x)^2}{n}[/tex].
Here, σ² = [(87-78)²+(46-78)²+(90-78)²+(78-78)²+(89-78)²]/5
= (9²+(-32)²+12²+0²+11²)/5
= (81+1024+144+121)/5
= 1370/5
= 274
So, the variance is 274.
Therefore, option C is the correct answer.
Learn more about the variance here:
https://brainly.com/question/29615374.
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Please help me. I need help
Q1: 17 divided by 14.91
Answer:
1.14017438
Step-by-step explanation:
Answer:1.140174379611
Step-by-step explanation:
The diagonal of a cube is 20 cm. Identify the length of an edge. Round to the nearest tenth, if necessary.
answers:
20 cm
14.1 cm
13.8 cm
11.5 cm
The length of an edge or side length of the cube is 11.5 cm if the diagonal of a cube is 20 cm option (d) is correct.
What is a cube?It is defined as three-dimensional geometry that has six square faces and eight vertices.
We have a cube.
The diagonal of a cube is 20 cm.
Let a be the side length of the cube.
As we know, from the Pythagoras theorem we can calculate the length of the face diagonal.
Pythagoras' theorem can be defined as the square of the hypotenuse in a right-angled triangle equal to the sum of the squares of the other two sides.
Length of a face diagonal = √2a
Length of body diagonal = √3a
√3a = 20 (given)
a = 20/√3
a = 20/1.732
a = 11.5 cm
Thus, the length of an edge or side length of the cube is 11.5 cm if the diagonal of a cube is 20 cm option (d) is correct.
Learn more about the cube here:
brainly.com/question/15420947
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Answer:
11.5
Step-by-step explanation:
The answer is 11.5 I guessed 20 cm like they said and it was wrong. 11.5cm is correct.
What is the probability of rolling a 1 ora 4 on a number cube labeled 1 through 6?
Answer:
For each number, there is a 1/6 probability of rolling it (so 1/6 for the 1 and also 1/6 for the 4).
This means that the probability of rolling either a 1 or a 4 on a given roll is
1 /6 + 1 /6 = 2/6 = 1/3
hope this answer helps you.....
Answer:
Is 1/6
Step-by-step explanation:
A store is going out of business. Everything is
marked down 40%. How much do you pay for an item
that used to cost $150?
A. $90
B. $110.50
C. $40
Pleaseeeeeee help meeeee
Answer:
82
Step-by-step explanation:
Add all the numbers up then divide by the amount of numbers (10)
Answer:
C. 82
Step-by-step explanation:
Mean is the average of the number set
So,
82 + 91 + 89 + 78 + 81 + 88 + 75 + 85 + 77 + 74 =
820
820 / 10 =
82
Please help me with this please ASAP
Answer:
h: 4
LA: 80
SA: 112
Step-by-step explanation:
Solve for h, and then use the previous equations.
jose paid $47.00 for 4 movie tikits. each tiket cost the same amount . what was the cost of each movie tiket in doller and cents?
A rectangle’s length is 9 more than 4 times its width. The area of the rectangle is 90 square inches. What is the width of the rectangle?
Answer:
15/4 in or 3.75 in
Step-by-step explanation:
Find your equations:
L = 4w + 9 in
A = L*w = 90 in^2
Substitute L:
L*w = 90 in^2 <-- L = 4w + 9
(4w + 9in)w = 90 in^2
4w^2 in^2 + 9w in = 90in^2
Solve Simultaneously:
w = -6 in, 15/4 in
Width is positive so it is 15/4 in or 3.75 in.
Double check:
(4w + 9in)w = 90 in^2
(4*3.75in + 9in)(3.75in) = 90 in^2
Leave a like if this helped and mark brainliest
Help I need this tomorrow
9. Make Sense and Persevere The graph shows
the number of gallons of water in a large tank
as it is being filled. Based on the trend line,
predict how long it will take to fill the tank
with 375 gallons of water.
Answer:
About 18 minutes
Step-by-step explanation:
Given that the area of the whole rectangle is 48 square units, find the area of (I).
find the mole fraction of benzene and toluene in solution containing
(a) equal mass of each
(b) equal molecules of each
Answer:
Hello There!!
Step-by-step explanation:
I think the answer is possibly (b) equal molecules of each .
hope this helps,have a great day!!
~Pinky~
which number is equivalent to 2^3/3^3
Answer:
8/27
Step-by-step explanation:
A function is defined by the rule f(x) = 11 - 2x. What is the value of f(-3) ?
Answer:
17
Step-by-step explanation:
11 - 2(-3) = 11 + 6 = 17
should put -3 where x is
Sangsters sells staples in packs of 500 Staples for $1,250 and 1000 Staples for $3,000. Which pack is the better value for money? Justify your answer.
Answer:
Step-by-step explanation:
I want to know what kind of stables are these? Are they made out of gold?
$1250 / 500 stables verses $3000 / 1000 stables
$2.5 per stable $3 per stable
Both packs are too expensive but $2.5 per stable isthe better value.
helps plz,
The figure shows a kite inside a rectangle. Which expression represents the area of the shaded region?
A. 2x^2
B. 4x^2
C. 6x^2
D. 8x^2
Thanks!!
[tex] \huge \mathrm{Answer࿐ }[/tex]
Fig - 1 : Rectangle
length = 3x + x = 4x width = x + x = 2x[tex] \boxed{\mathrm{Area = length \times width}}[/tex]
[tex]4x \times 2x[/tex][tex]8 {x}^{2} [/tex]_____________________________
Fig - 2 : Kite
[tex] \boxed{\mathrm {Area = \dfrac{1}{2} \times d_1 \times d_2 }}[/tex]
[tex] \dfrac{1}{2} \times 4x \times 2x[/tex][tex]4 {x}^{2} [/tex]_____________________________
Area of shaded region :
Area of rectangle - Area of kite [tex]8 {x}^{2} - 4 {x}^{2} [/tex][tex]4 {x}^{2} [/tex]So, Correct option is B. 4x²
_____________________________
[tex]\mathrm{ \#TeeNForeveR}[/tex]
Find (x-4) (2x +1) using table of products. Write in standard form
Answer:
[tex]2x^{2} - 7x - 4[/tex]
Step-by-step explanation:
Give Me Brainllest
Answer:
Your welcome ;)
Step-by-step explanation:
GIVING BRAINLIEST PLS HELP!!!!!!1
Show ur work. And use PEMDAS
32+4 x (16 x 1/2) - 2
Answer:
62
Step-by-step explanation:
32+4x(16x1/2)-2
32+4x8-2
32+32-2
64-2
62
What two numbers have a product of -54 and a sum of -3?
Answer:
-9 and 6
Step-by-step explanation:
Answer:
-9 and 6
Step-by-step explanation:
-9X6 is -54
and -9+6 is -3
What is the rock cycle? Select the best two answers from the choices below.
a
The primary indicator of climate change
b
A series of processes that create and transform the types of rocks in Earth's crust
c
A concept in geology that describes transitions and relationships among the three main rock types
d
A way to show how Earth's different spheres interact with one another
Answer:
A concept in geology that describes transitions and relationships among the three main rock types
please mark as brainliest.
Answer:
b. A concept in geology that describes transitions and relationships among the three main rock types. and
c. A series of processes that create and transform the types of rocks in Earth's crust
Step-by-step explanation:
ive studied and this is correct because i took the test and i got it correct
please give me 5 stars
a little help would be nice
Answer:
13). -2x³ + x² + 1 14). x + 10y - 10z 15). -2x³ + x² + 1
Step-by-step explanation:
13). (x³ - x² + 4) - (3x³ - 2x² + 3)
= x³ - x² + 4 - 3x³ + 2x² - 3
= x³ - 3x³ - x² + 2x² - 3 + 4
= -2x³ + x² + 1
14). (3x + 4y - 3z) - (2x - 6y + 7z)
= 3x + 4y - 3z - 2x + 6y - 7z
= 3x - 2x + 4y + 6y - 3x - 7z
= x + 10y - 10z
15). (x³ - x² + 4) - (3x³ - 2x² + 3)
= x³ - x² + 4 - 3x³ + 2x² - 3
= x³ - 3x³ - x² + 2x² + 4 - 3
= -2x³ + x² + 1
Mhanifa can you please help? Look at the picture attached. I will mark brainliest!
Answer:
8) 50°, 50°, 130°, 130°10) 120°Step-by-step explanation:
Ex 8Adjacent interior angles of a parallelogram are supplementary
Let the small angle is x, the other angle is:
2x + 30°The sum of two angles is 180°
x + 2x + 30° = 180°3x = 150°x = 50°The angles are 50°, 50°, 130°, 130°
Ex 10Sum of interior angles of a pentagon is:
S = 180°(5 - 2) = 540°Two of the angles are supplementary, so they sum to 180°
The sum of the remaining 3 angles is:
3x = 540° - 180°3x = 360°x = 120°Each of the congruent angles is 120°
So say someone did 1000 push ups a day for 8 years 2920 days in 8 years and you want to do the same amount but in 2 months how many would you have to do a day
Answer:
48,667 if you round it..
Step-by-step explanation:
1000x2920 = 2,920,000
divided by 2 months
2,920,000/2 = 1,460,000
and theres 30-31 days in a month
1,460,000/30 = 48,666.67
Help me with this?!!!!
Answer:
14
Step-by-step explanation:
we can use sin(30⁰) to solve this and the units will be 14
what is the least common denominator of 3/1+8/4
Answer:
4355646
Step-by-step explanation:
45345
Answer:
least common denominator is 4
Step-by-step explanation:
3/1+8/4=20/4 which is 5
which of the following can be brisk? a.A gift from a relative b.A walk around town c.a bowl of soup d.A fall breeze
(Pick all of the following hint: there is more than one.)
Answer:
A fall breeze and a bowl of soup I might say.
Last year Billy weighed 75kg. This year he weighed 90kg. With what percentage did his weight increase?
Answer:
I think the solution is this below
|
|
\/
75/90 × 100%
(dividing 75 bad 90 by 5 )
15/18 × 100%
(dividing 15 and 18 by 3 )
5/6 × 100%
( dividing 6 and 100 by 2 )
5/3 × 50%
250/3%
83 1/3%
your answer ====> 250/3% or 83 1/3%
How would I set this to 0?
Answer:
− 2 sin ( 0 ) ⋅ sin ( 0 ⋅ π /0 m ) + cos ( 0 ) ⋅ cos ( 0 ⋅ π /0 m ) = 0 is not an identity
Step-by-step explanation:
a circle with two intersecting chords are shown below. if m
Answer:
165
Step-by-step explanation:
In her metalwork class, Anja cut a square of
tin, of edge 3.7 cm, from a larger square of
edge 6.3 cm. What area of tin was left?
Given:
Anju cut square of tin, of edge 3.7 cm, from a larger square of edge 6.3 cm.
To find:
The area of the remaining tin.
Solution:
Area of a square is:
[tex]Area=a^2[/tex]
Where, a is the edge of the square.
Area of the smaller square is:
[tex]A_1=(3.7)^2[/tex]
[tex]A_1=13.69[/tex]
Area of the larger square is:
[tex]A_2=(6.3)^2[/tex]
[tex]A_2=39.69[/tex]
The area of the remaining tin is:
[tex]A=A_2-A_1[/tex]
[tex]A=39.69-13.69[/tex]
[tex]A=26[/tex]
Therefore, the area of the remaining tin is 26 sq. cm.
