Answer:
75%
Step-by-step explanation:
Answer:
A... 25%
Step-by-step explanation:
75/300 = 1/4
0.25 = 25%
Write the following series in sigma notation.
5+13+21+29+37+45+53
Answer:
203
Step-by-step explanation:
Answer:
∑ᵢ⁷₌ ₁(7+8i)
Explanation:
In order to write a series in sigma notation you must:
Identify the index of summation and first value. In the equation, the index of summation would be i and the first value is assumed to be 1 due to the pattern that can be traced back. Identify the last value of n, which would be 7 in the series. This value is placed as a superscript next to or above the capital Greek letter ∑.Identify the formula for the terms. In thes case, the formula for the terms is (7+8i) because there are seven terms in the sequence that are increasing by 8. The variable i comes after because that is the letter used in the index of summation.The national average time spent using the internet at public libraries is 6 hours
per week with a standard deviation of 2 hours. In a local public library a random
sample of 64 people revealed an average time spent using the internet to be 6
1/2 hours. Is there reason to believe that the local average time on the internet is
different from the national average? Conduct a hypothesis test at the .05 level of
significance.
Answer:
We reject H0 and conclude that local average time on the internet is
different from the national average
Step-by-step explanation:
H0 : μ = 6
H0 : μ ≠ 6
Test statistic :
(xbar - μ) ÷ (s/√(n))
(6.5 - 6) / (2 / √64)
0.5 / (2/8)
0.5 / 0.25
Test statistic = 0.5 / 0.25
Test statistic = 2
We obtain the Pvalue :
Using the Pvalue from test statistic (Z) score calculator :
Pvalue = 0.0455
α = 0.05
Since Pvalue < α ; We reject H0 and conclude that local average time on the internet is
different from the national average
Round to the nearest 5764.357894
Answer:
Step-by-step explanation:
5764.36 I think
Find f(-2) for f(x)= 5x3^x
Answer:
f(-2) = 90
Step-by-step explanation:
Plugging in the value of f(x) into the equation:
f(-2) = 5(-2)3^(-2)
f(-2) = 5(-2)(-9) - evaluate the power first
f(-2) = 90 - multiply from left to right to obtain answer
3(x-3)=-3
what would this answer be
Answer:
x=2 would be your answer
Answer:
x = 2
Step-by-step explanation:
3(x - 3) = - 3
3x - 9 = - 3
3x - 9 + 9 = - 3 + 9
3x = 6
3x ÷ 3 = 6 ÷ 3
x = 2
call me an i.d.i.o.t all you want but can someone help me understand this please
NO LINKS OR PDF FILES THAT DONT WORK
So supplementary angles are ones that add up to 180degrees and complementary ones add up to 90degrees.
So for the left side, you find what angle is supplementary to the given one. For the angle of 35, another angle of 145 will add up to 180.
The right side want you to find the complementary angles, so for the angle of 18, another angle of 72 will add up to 90.
I always forget supplementary vs complementary, but a little bit of practice will help a lot.
what is the volume of a sphere with a radius of 9.2cm, rounded to the nearest tenth of a cubic centimeter
Answer:
Step-by-step explanation:
Answer:1630.9 cm
v=4/3πr^3
radius =9.2
Plug in
4/3π(9.2)^3
3261.76066-
Volumenof hemisphere Half of volume of spehere
3261.76066698/2
=1630.9 cm^3
A cone has a volume of 9 cubic inches. What is its height?
Answer:
height is 27/πr^2
Step-by-step explanation:
h
Four friends are going to share the responsibility of babysitting 3 children for 7 hours. How much time will each friend spend babysitting if they take turns and spend equal amounts of time?
Answer:
1.75 hours :)
Step-by-step explanation:
Select all statements that are true
Answer:
A, E, F
there's really no explanation
find the circumference of the pizza to the nearest tenth (10in)
Answer:
31.4in
Step-by-step explanation:
In order to solve this, we need to know that circumference of a circle is equal to its diameter times "pi" (a mathematical constant). So we just do...
(π)(10in) ≅ 31.4in (rounded to the nearest tenth)
Let's assume a typical New Zealand farmer raising sheep owns 250 hectares and averages about 10 livestock units per hectare. If each ewe earns the farmer $20/year, how much money does that farmer earn in one year?
Answer:
$50,000
Step-by-step explanation:
We have an average of 10 livestock units per hectare
The number of units in 250 hectares will be;
250 * 10 = 2,500 units
Amount earned per unit is $20 per year
So, for 2,500 units, we have
2500 * $20 = $50,000
As students arrive at school one morning, every tenth
student is asked which band he or she prefers for the dance
Answer:
Step-by-step explanation:
Calculate the perimeter and the area of the figure use 3.14
Answer:
Step-by-step explanation:
13.
P= 19.42mm
A= 18.32mm²
Answer:
Half of 6 is 3(new radius)
2 x 3.14 x 3 = 18.84, 18.84 divided by 2 = 9.42
2 + 2 + 2 = 6
6 - 2 = 4
Add lengths:
9.42 + 6 + 4 = 19.42 mm is your perimeter
2 x 2 = 4
3^3 = 9
9 x 3.14 = 28.26, 28.26 divided by 2 (semi circle) = 14.13
Add areas:
4 + 14.13 = 18.13 mm2 is your area
Find the value of x and 3x.
Answer:
x = 90°
3x = 270°
Step-by-step explanation:
Split the shape in half through the plane of 3x and x.
We can find the angle of x/2 is 45°.
Since x/2 = 45°, then we can fid that x=90°.
To find 3x, we simply multiply 90° 3 times.
So 3x = 270°.
The scatter plot shows the number of gallons of gas nicks car used to travel different numbers of miles
A scatterplot shows the number of miles driven versus the gallons of gasoline remaining in the gas tank of a car. Which correlation best describes the relationship shown on the scatterplot?
Answer:
Negative correlation
Step-by-step explanation:
The kind of relationship which exists between two variables can be obtained whwn plotted in a graph such that we can visually access the data and note its trend. Datasets with fit lines trending downward will always have a slope value which is negative. In the scenario above, gallon of gasoline falls as the number if miles driven increases. This is a very reasonable relationship. And thus correlation between Both variables will be negative
Find the values of x and y.
Answer:
y=60°
x=12°
Step-by-step explanation:
because the propertiy of parallelogram is the opposite side have equal measurement.
that is why y=60°
x+3=15 the paralla side are equal
x=15°-3°
x=12°
proof》》》》x+3=
12°+3°=15°
15°=15°
What is the equation of the line through the point (O, 4) with slope of 2?
How many times does 2/3 go into 3/8?
Answer:
91/6 times
Step-by-step explanation:
(2/3)(x)=3/8
2x/3=3/8
16x=9
x=9/16
So, 2/3 goes into 3/8, 9/16 times
JimThompson Algebra Help assignment HW
Problem 1
Answers:
Mean = 51.68
Median = 51
There are 100 values
IQR = 54
---------------------
Explanation:
The values are found in the table. The IQR (interquartile range) is the difference of Q3 and Q1.
IQR = Q3 - Q1 = 77 - 23 = 54
===========================================================
Problem 2
Answer: C) Mean is greater than the median
---------------------
Explanation:
The main clump of values is pretty much between 80 and 110. The other values can be considered in the right tail, which is pulled out more compared to the left tail. We consider this a right skewed distribution, and that indicates the mean is larger than the median. The tails always pull on the mean toward it. A very long way to confirm this answer is to manually enter the values into a calculator and compute the mean and median, but that would be tedious busy work in my opinion.
===========================================================
Problem 3
Answers: A) Mean and median are the same value
---------------------
Explanation:
This data set is uniform and symmetric about the center, so the mean = median.
===========================================================
Problem 4
Answer: Choice A)
=MIN(A1:A10)
---------------------
Explanation:
We use the MIN function, and we select everything from cell A1 to A10. The colon tells us to select everything between those endpoints and including those endpoints. If we wrote =MIN(A1,A10), then we would only select the two endpoints only and nothing in between, which isn't what we want.
===========================================================
Problem 5
Answer: Choice D
=QUARTILE(A1:A10, 3)
---------------------
Explanation:
The QUARTILE function is what we'll use. It has two inputs. The first is the data itself, which is the values from A1 to A10. The second input entry is the quartile we want, which is the third quartile. So we'll use "3" in the second slot as choice D indicates.
As far as I know, excel doesn't have an "upperquartile" function and neither does any other spreadsheet program (I could be mistaken however). Choice B describes finding the first quartile on the items from A1 to A10.
Choice C is nonsense because cell B1 isn't shown, that item isn't in the proper column. If you want to select another column, you need to tack that onto the end rather at the beginning. Also, and this is very important, the selection input must be rectangular. So if you wanted to include column B, you would have to start at A1 and end at B10. The input would be A1:B10. Saying A1:B1 would produce an error.
Use words to write each of these decimal numbers:
(a) 200.02
(b) 0.001625
Answer:
a) two hundred and two hundredths
b) one thousand six hundred twenty five millionths
Answer:
A. two hundred and two hundredths
B. one thousand six hundred and twenty five millionths
Step-by-step explanation:
hope this helps!
Please help show work
A 19
B 37
C 58
D 24
Find x ba=5x -11
Ad = 6x -18
Answer:
x=7
Step-by-step explanation:
since its a square, all sides are the same so 5x-11 = 6x-18 and then solve it :)
Which inequality represents all possible solutions of -12d2 -6?
A d< - 1/2
B d> - 1/2
C d< 1/2
D d> 1/2
The inequality the represents the expression -12d < - 6 is d < 1/2.
What is inequality?Mathematical expressions with inequalities are those in which the two sides are not equal. Unlike to equations, we compare two values in inequality. Less than (or less than or equal to), larger than (or greater than or equal to), or not equal to signs are used in place of the equal sign. Equations are not always balanced on both sides using a "equal to" sign in mathematics. Occasionally it might be about a "not equal to" connection, meaning that something is superior to or inferior to another.
The given inequality is -12d < - 6.
The inequality can be written as:
d < -6/ -12
d < 1/2
Hence, the inequality the represents the expression -12d < - 6 is d < 1/2.
Learn more about inequality here:
https://brainly.com/question/30231190
#SPJ1
no links please.....
The length of a rectangle is 3x−2 and the width is x. x. If the area is 65ft^2, what is the width?
- my other one got deleted ;)
Answer:
5 ft
Step-by-step explanation:
Area of a rectangle
length x width
(3x-2) * (x) = 65
3x^2 - 2x - 65 = 0
Δ/4 = 1 + 195 = 196
x1 = (1 + 14)/3 = 5
x2 (1-14)/3 = -13/3 (not acceptable because a length can’t be negative)
Would you rather change your eye color or your hair color?
Answer:
Eye color because you can easily buy hair dye and i think it would be cool if u could have a sharingan eye contacts
Step-by-step explanation:
Answer:
Eye color to red lol
Step-by-step explanation:
Want to be a vampire
4. 8.G.3.9
This cone and sphere have equal volumes.
What is the radius of the sphere?
Answer:
the radius of the sphere is 12 cm.
Step-by-step explanation:
IN A CONE
vertical height (h) = 27 cm
radius (r) = 32 / 2 = 16 cm
Now the volume of cone is
= 1/3 *h*π*r²
= 1/3 * 27 *π *16²
= 2304π cm³
Also by the question the cone and the sphere have equal volumes so
volume of sphere = volume of cone
= 2304 π cm³
OR, 4/3 πr³ = 2304 π
4/3 * r³ = 2304
r³ = 2304 * 3 / 4
r³ = 1728
r = ∛1728
r = 12 cm
hope it helps :)
If you want your investment or savings account to be easily turned into cash without losing its value, consider the _____. yield term liquidity risk
There are 25 girls going to Hershey Park for chorus.
The number of girls is 3 more than twice the number of boys.
How many boys are going to Hershey Park?
Answer:
Solution given:
total no of girls [g]=25
let no of boys [b]=b
according to the question
g=2b+3
25-3=2b
b=22/2
b=11
total number of boys going to Hershey Park is 11.
Help me! And please explain because I really don’t understand
Answer:
115 degrees
Step-by-step explanation:
because a line is 180 degrees so you take 65 from 180 which gives you 115, and we know that thats the x on the top because the bottom line (which has 65 degrees) are the same with the top line (the one with the missing x) since the transversal line is evenly cut thru
hope i helped