Answer:
1. Mean => 8.2
2. Modal class => 7 - 9
Step-by-step explanation:
From the question given above, the following data were obtained:
Days >>>>>> Frequency
1 - 3 >>>>>>> 6
4 - 6 >>>>>> 8
7 - 9 >>>>>> 10
10 - 12 >>>>> 7
13 - 15 >>>>> 0
16 - 18 >>>>> 5
Next, we shall determine the the day mark.
The day mark is obtained by adding the the lower and upper class intervals and diving the result by 2.
This is illustrated below:
Days >> Day mark >>> Frequency
1 - 3 >>> 2 >>>>>>>>>> 6
4 - 6 >>> 5 >>>>>>>>> 8
7 - 9 >>> 8 >>>>>>>>> 10
10 - 12 >> 11 >>>>>>>> 7
13 - 15 >> 14 >>>>>>>> 0
16 - 18 >> 17 >>>>>>>> 5
1. Determination of the mean.
Summation of (day mark × frequency) = (2×6) + (5×8) + (8×10) + (11×7) + (14×0) +(17×5)
= 12 + 40 + 80 + 77 + 0 + 85
= 294
Summation of frequency = 6 + 8 + 10 + 7 + 0 + 5
= 36
Mean = Summation of (day mark × frequency) / Summation of frequency
Mean = 294 / 36
Mean = 8.2
2. Determination of the modal class.
The modal class is simply the class with the highest frequency.
Days >>>>>> Frequency
1 - 3 >>>>>>> 6
4 - 6 >>>>>> 8
7 - 9 >>>>>> 10
10 - 12 >>>>> 7
13 - 15 >>>>> 0
Considering the data given above, the class with the highest frequency is 7 - 9.
Thus, the modal class is => 7 - 9
elise bought a video game for $85.00. If the store charges 170% of its cost for the game, how much is the store's profit?
Answer:
$59.5
Step-by-step explanation:
Pls answer correctly I’ll give you brainliest
Answer:
5/-1
Step-by-step explanation:
The two points are (-1, -2) and (-2, 3).
Slope is y change over x change.
So... 3-(-2) over -2-(-1).
That is 5 over -1.
Slope is 5/-1.
Hope this helps :D
PLEASE HELP WILL GIVE BRAINLIEST!
y= 3x — 5
y=6x — 8
solve with elimination pls
Answer:
Point form: (1,-2)
Equation form: x=1 y= -2
Step-by-step explanation:
Hope it helps
ANSWER ASAPPPP SAVE MEEEEEE
Answer:
this is all on you i cant do thatXD
Step-by-step explanation:
If they are Similar what’s is the similarity statement ?
Answer:
Show the whole pic
Step-by-step explanation:
Find the vertex of the graph! Help please...thank youuuu!!!! <3
Answer:
S(-2,12)
y= -2(x+2)²+12
Location of coordinate axes:
y=0 → x= -2±√6 (-2-√6,0) (-2+√6,0)
x=0 → y=4 (0,4)
Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bars.
What are the midline, amplitude, and period of this function?
Answer:
Midline: -2
Amplitude: 1.5
Period: 4
Step-by-step explanation: I got it right on the plato test.
The Midline is the middle of the number of the function.
The Amplitude is from the midline to the highest or lowest point of the function.
The period is the distance on the x axis from the two points.
Hope this helps!
Answer:
Step-by-step explanation:
on edmentum
Please help brainiest to whoever
Answer:
I. The width is 43.5 inches.
II. The length is 24.5 inches.
Step-by-step explanation:
Let the length and width of the rectangle be L & W respectively.
Given the following data;
Perimeter of rectangle = 136 inches
Translating the word problem into an algebraic expression, we have;
L = W - 19 ......equation 1
Perimeter of rectangle = 2(L + W) ......equation 2
To find the dimensions of the rectangle;
136 = 2(L + W)
Substituting eqn 1 into eqn 2, we have;
136 = 2(W - 19 + W)
136 = 2(2W - 19)
136 = 4W - 38
4W = 136 + 38
4W = 174
W = 174/4
W = 43.5 inches
To find the length;
L = W - 19
L = 43.5 - 19
L = 24.5 inches
Need help ASAP Plss help
Could the table x,y pairs have been generated by a linear function x 1,2,3,4 y 3,5,7,9
find the factors of each number. Write the common factor ( CF ) and then state the greatest common factor ( GCF) .
Given:
Two numbers are 12 and 21
To find:
The factors of 12 and 21, then find the common factor and the greatest common factor.
Solution:
Two numbers are 12 and 21. The prime factors of these two numbers are
[tex]12=2\times 2\times 3[/tex]
[tex]21=3\times 7[/tex]
From the above factorization, it is clear that the factor 3 is common in both. So,
Common factor (CF) = 3
Only 3 is common in factorization of both. So,
Greatest common factor (GCF) = 3
Therefore, the common factor is 3 and the greatest common factor is also 3.
If r = 12 units and x = 13 units, then what is the volume of the cylinder shown above?
Answer:
2,016 pi cubic units
Step-by-step explanation:
Evaluate the function for the given
value:
h(t) = 3 • 47 for h(-3)
Answer:
h=141/t
Step-by-step explanation:
It took the paramedics 840 seconds to arrive at the scene. How many minutes did it take for the paramedics to arrive? (Round to the nearest minute, if necessary.)
Answer:
14 min
Step-by-step explanation:
Dividing 840 seconds by (60 sec / 1 min) results in 14 minutes.
( (60 sec / 1 min) is a conversion factor, sec to min or min to sec.)
Answer:
14 minutes
Step-by-step explanation:
840/60 = 14
A vessel without a lid has the shape of a cylinder. The height of the vessel is 1.5 m, and the diameter of the base represents 40% of the height. Determine if 1 kg of paint is enough to completely paint the vessel inside and out, if it is known that for 1 square meter of surface 150g of paint is consumed.
Answer:
Yes, 1 kg of paint is enough to completely paint the inside and outside surfaces of the vessel.
Step-by-step explanation:
For the given vessel without a lid,
diameter = 0.4 x 1.5
= 0.6 m
radius = [tex]\frac{diameter}{2}[/tex] = [tex]\frac{0.6}{2}[/tex]
= 0.3 m
Total external surface area of the vessel = 2[tex]\pi[/tex]rh + [tex]\pi[/tex][tex]r^{2}[/tex]
= [2 x [tex]\frac{22}{7}[/tex] x 0.3 x 1.5] + [[tex]\frac{22}{7}[/tex] x [tex](0.3)^{2}[/tex]]
= 2.8286 + 0.2829
= 3.1112
Total external surface area of the vessel is 3.1112 square meter.
Total internal and external surface area = 2 x 3.1112
= 6.2224 [tex]m^{2}[/tex]
But for 1 square meter, 150 g of paint is consumed. Thus;
for 6.2224 [tex]m^{2}[/tex] = 6.2224 x 150 g
= 933.36 g
Thus, 6.2224 [tex]m^{2}[/tex] of area would require 933.36 g of paint.
So that,
[tex]\frac{933.36}{1000}[/tex] = 0.93336 kg
Therefore, 1 kg of paint is enough to completely paint the inside and outside surfaces of the vessel.
Which of the the coordinates is equal to sin (4pi/5) ?
A) x-coordinate of point A
B) y-coordinate of point A
C) x-coordinate of point B
D) y-coordinate of point B
E) x-coordinate of point C
F) y-coordinate of point C
Answer:
Step-by-step explanation:
π/2 < 4π/5 < π
4π/5 is in Quadrant II
sin(4π/5) = y-coordinate of A
The coordinates is equal to sin(4π/5) = y-coordinate of A.
We need to find the coordinates is equal to sin (4pi/5).
Which trigonometric functions are positive in which quadrant?In first quadrant (0 < θ < π/2), all six trigonometric functions are positive.
In second quadrant(π/2 < θ < π), only sin and cosec are positive.
In the third quadrant (π < θ < 3π/2), only tangent and cotangent are positive.
In fourth (3π/2 < θ < 2π = 0), only cos and sec are positive.
Then, we have π/2 < 4π/5 < π
So, 4π/5 is in Quadrant II
Hence, the coordinates is equal to sin(4π/5) = y-coordinate of A.
Learn more about trigonometric ratios here:
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a smart phone prices at 235 was on sale for 195. what was the percent discount.
will mark brainliest!! pls help if you can!!
Answer:
The answer should be 120.512821\%
Step-by-step explanation:
1 To convert the fraction to a decimal, divide the numerator by the denominator.
235÷195
2 Use long division.
1.205128
3 To convert to a percent, multiply the decimal by 100.
1.205128×100=120.512821
4 Add the percent sign.
120.512821%
Anyone help please I need this
Answer:
J = 20.11
Step-by-step explanation:
the price of the cup of coffee has dropped to 2.50 today. yesterday's price was 2.75. find the decrease percentage and round to the nearest tenth
An art class is making paperweights out of plaster. They use a mold in the shape of a rectangular prism. (2 1/4m, 2 1/2m, and 1 3/4m represents the size of the prism)
How much plaster will it take to completely fill the mold?
9.84 m³ plaster will it take to completely fill the mold.
What is Volume?The area that any three-dimensional solid occupies is known as its volume. These solids can take the form of a cube, cuboid, cone, cylinder, or sphere.
Cubic units are used to quantify a solid's volume. For instance, the volume will be given in cubic metres if the dimensions are given in metres. The International System of Units uses this as the reference unit for volume (SI).
We have,
A rectangular prism. (2 1/4m, 2 1/2m, and 1 3/4m represents the size of the prism).
So, the capacity or Volume of mold is
V= l w h
Now, w= 2 1/2 = 5/2 = 2.5 m
and, h=1 3/4 = 7/4 = 1.75 m
and, l= 2 1/4 = 9/4 = 2.25 m
Then, the Volume is
V= 2.5 x 1.75 x 2.25
V = 9.84 m³
Thus, the required volume is 9.84 m³.
Learn more about Volume here:
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12 + x/4 > 20
Thank you if you answer!! please just put the answer
Answer:
The answer is x > 32.
Step-by-step explanation:
1) Subtract 12 from both sides.
[tex] \frac{x}{4} > 20 - 12[/tex]
2) Simplify 20 - 12 to 8.
[tex] \frac{x}{4} > 8[/tex]
3) Multiply both sides by 4.
[tex]x > 8 \times 4[/tex]
4) Simplify 8 × 4 to 32.
[tex]x > 32[/tex]
Therefor, the answer is x > 32.
Help pretty pretty please !!❤️
Answer:
HEYOOO
The answer must be that it has a MAX
Step-by-step explanation:
Its because the graph has a MAXIMUM "peak" of the line--the maximum point on the graph of which it reaches!
HOPE THIS HELPS!
please help, whoever gets it right I will mark brainliest.
Answer:
One and Four
Step-by-step explanation:
Answer:
choices 1, 3, & 4 are true, 2 is not
Step-by-step explanation:
what is the value of x and m?
Answer:
x = 15
m = 15
Step-by-step explanation:
mark brainliest
Help!!!!!! Help!!!!
Answer:
24°
Step-by-step explanation:
[tex]r \degree = 180 \degree - (34 + 122) \degree \\(vertical \: \angle s) \\ \\ r \degree = 180 \degree - 156 \degree \\ \\ r \degree = 24 \degree \\ \\ r = 24[/tex]
Answer and Step-by-step explanation:
The answer is 24 degrees.
We see the angle 34 and 122. To find that angle in between, we subtract those numbers from 180.
180 - 34 - 122 = 24 = r
By the vertical angles theorem, r is equal to 24.
#teamtrees #PAW (Plant And Water)
***PLEASE HELP***
The U.S. Mint has as specification that pennies have a mean weight of 2.5 g. A sample of 37 new pennies have a mean weight of 2.49910 g and a standard deviation of 0.01648 g. Use a 0.05 significance level to test the claim that this sample is from a population with a mean weight equal to 2.5 g. Use Table A-3 to find the range of values for the P-value.
0.10 < P-value < 0.20
P-value > 0.20
0.05 < P-value < 0.10
P-value > 0.10
Answer:
ITS THE 3RD CHOICE
Step-by-step explanation:
JUST DID THIS IN FLVS :3
Answer:
Step-by-step explanation:
Its the second choice "P-value > 0.20", the other guy just sold me....
please help asap! will give 20 points
Answer:
its 84 I did the math for you
What is the area of this composite figure? A figure is comprised of 2 rectangles. The first rectangle has a length of 10.5 centimeters and width of 15.5 centimeters. The second rectangle has a length of 18 centimeters and width of 11.5 centimeters. 135 centimeters squared 207 centimeters squared 249 centimeters squared 279 centimeters squared
A is the correct answer i didnt the test
The area of the composite figure is A = 369.75 cm²
What is the Area of a Rectangle?The area of the rectangle is given by the product of the length of the rectangle and the width of the rectangle
Area of Rectangle = Length x Width
Given data ,
Let the area of the rectangle be A
where A = A₁ + A₂
Now , area of first rectangle A₁ = 10.5 x 15.5
A₁ = 162.75 cm²
And , area of second rectangle A₂ = 18 x 11.5
A₂ = 207 cm²
So , A = 162.75 cm² + 207 cm²
A = 369.75 cm²
Hence , the area of figure is A = 369.75 cm²
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If the lengths of the two legs of a right triangle are 12 and 16, what's the length of
the hypotenuse?
A) 28
B) 14
C) 16
D) 20
Answer:
c=20cm
Step-by-step explanation:
In a right triangle
a^2 +b^2 =c^2
Where c is length of hypotenuse.
⟹12^2 +16^2 =c^2
c^2 =144+256
c^2 =400
c=20cm
Hope it is helpful....Answer:
20
Step-by-step explanation: I took the test
Jose has a target of at least $150 in pledges for a walkathon. He currently has $65 in pledges. Write the inequality for the amount (x) Jose has left to raise
Answer:
65+x=150
he has 65 so if he keeps adding to it which is x and then he will get 150.