Step-by-step explanation:
let two successive integers n, n+1
difference of the reciprocals:
[tex]\frac{1}{n}-\frac{1}{n+1} \\=\frac{(n+1)-n}{(n)(n+1)}\\=\frac{1}{(n)(n+1)}\\=\frac{1}{(n)}\frac{1}{(n+1)}\\[/tex]
10 ft
8 ft
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6 ft
Find the outer perimeter of this figure.
Round your answer to the nearest
hundredth. Use 3.14 to approximate a.
P = [?] ft
Notice that only half of the circle is included in the figure!
Enter
Answer:
P=28.56 ft
Step-by-step explanation:
P= Side1 +Side2 + 0.5 circle
P=10+6+ πDiam/2=16+4π=28.56 ft
Answer:
28.56ft
Step-by-step explanation:
The side lengths of a triangle are 9, 12, and 15. Is this a right triangle?
Answer:
Step-by-step explanation:
Those are the side lengths not the angles so I'm not sure, also are you sure that's right? I believe there has to be a hypotenuse and the hypotenuse is the sum of the two shorter sides added together.
Do you have any more information? I can try to help :)
Answer:
Yes, because 9^2+12^2>15^2
Step-by-step explanation:
Ap3x
What is the angle of AHM?
When simplifying radical expressions, what combination of factors are you looking for and why?
there are 3 consecutive even integers. three times the smallest is twice the largest. what are the integers
100 poi's SOLVE FAST PLZ AND I WILL GIVE BRAINLEITS I PORMISE
Answer:
8,10,12
Step-by-step explanation:
Answer:
integer 1 = 8
integer 2 = x+2 = 8+2 = 10
integer 3 = x+4 = 8+4 = 12
Step-by-step explanation:
integer 1 = x , smallest
integer 2 = y , x+12
integer 3 = z , largest, x+4
three times the smallest is twice the largest.
3 (x) = 2 (x+4)
solve for x:
3x = 2x + 8
3x-2x = 8
x = 8
Replacing:
integer 1 = 8
integer 2 = x+2 = 8+2 = 10
integer 3 = x+4 = 8+4 = 12
What is the least common denominator of 11/14 and 11/15
Answer:
210
Step-by-step explanation:
210 is the least common multiple of 14 and 15
Find the area of sector TOP in
O using the information given below.
r=9m, mTP=189
Answer:
I believe that the answer is 1701 m² sorry if don't get it right
PLEASE HELP I WILL GIVE BRAINLIEST!!
Answer:
43.96
Step-by-step explanation:
To find Circumference the formula is
2*3.14*R=C
replace R with your radious which is 7
2*3.14*7=43.96
Two years ago, the average number of customers in your all of your company's stores per week was 3173 customers. This figure had increased 6% over the previous two years. Assume that you are doing a current study to test the claim that the mean weekly number of customers is different than it was two years ago. Assume a population standard deviation of 1,550 customers. Suppose you look at a random sample of 73 stores and find an average weekly customer total of 3,391. You wish to test the claim stated above at the 0.10 level. Run the appropriate hypothesis test.
Required:
Write ONLY the conclusion to your hypothesis test.
Answer:
Accept the null hypothesis
Step-by-step explanation:
Two years ago, the average number of customers in your all of your company's stores per week was 3173 customers. Assume that you are doing a current study to test the claim that the mean weekly number of customers is different than it was two years ago.
The null hypothesis is:
[tex]H_{0} = 3173[/tex]
The alternate hypothesis is:
[tex]H_{A} \neq 3173[/tex]
The test statistic is:
[tex]z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
In which X is the sample mean, [tex]\mu[/tex] is the value tested at the null hypothesis, [tex]\sigma[/tex] is the standard deviation and n is the size of the sample.
Due to our test, we have that [tex]\mu = 3173[/tex]
Assume a population standard deviation of 1,550 customers.
This means that [tex]\sigma = 1550[/tex]
Suppose you look at a random sample of 73 stores and find an average weekly customer total of 3,391.
This means that [tex]n = 73, X = 3391[/tex]
Test statistic:
[tex]z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
[tex]z = \frac{3391 - 3173}{\frac{1550}{\sqrt{73}}}[/tex]
[tex]z = 1.24[/tex]
p-value:
Since we are testing if the mean is different of a value, and the z-score is positive, the pvalue is 2 multiplied by 1 subtracted by the pvalue of z = 1.24.
z = 1.24 has a pvalue of 0.9251
2*(1 - 0.9251) = 2*0.0749 = 0.1498
0.1498 > 0.1, which means that we accept the null hypothesis, that is, that the mean weekly number of customers is equal to what it was two years ago at the 0.1 level of significance.
Find the value of x.
(Do not include the degree symbol in your answer. Round to the nearest degree as needed)
Answer:
X = 49.4
Step-by-step explanation:
Tan x = 7/6
Tan x = 1.1667
X = 49.4 degrees
Given the same figure as in the previous question, what is BC?
Answer:
using Thales theorem, we have:
[tex] \frac{17}{bc} = \frac{12}{12 + 8} \\ < = > \frac{17}{bc} = \frac{12}{20} = \frac{3}{5} \\ \\ < = > bc = \frac{17 \times 5}{3} = \frac{85}{3} = 28.3[/tex]
=> BC = 28 feet 4 inches
A single person earns a gross biweekly salary of $780 and claims 6 exemptions. How does their net pay change due to the federal income tax withheld?
You do not have any pay any federal income tax withheld. If your biweekly income is $780 then I'm assuming your monthly income should be doubled which is $1560, so in this income, you to pay only FICA tax worth $119.
What is federal income tax?The federal income tax is a tax on annual earnings. All wages like salaries, cash gifts from employers, business income, even tips, income from gambling, bonuses and unemployment benefits are subjected to a federal income tax.
What is FICA tax?FICA is a payroll tax that stands for Federal Insurance Contributions Act and is deducted from each paycheck.
Learn more about Income Tax here
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someone please help on this homework question
Answer:
25%, 40 trees, 50%, 36 trees
What is the distance between the points (2, 3) and (5, -4)?
7.6 units
6.3 units
3.7 units
10 units
Answer:
7.6 units
Step-by-step explanation:
d=(5−2)2+(−4−3)2−−−−−−−−−−−−−−−−√
d=(3)2+(−7)2−−−−−−−−−−√
d=9+49−−−−−√
d=5–√8
d=7.615773
Write an expression to describe the sequence below. Use n to represent the position of a
term in the sequence, where n = 1 for the first term.
11, 12, 13, 14, ...
Answer:
n+10
Step-by-step explanation:
This is applicable because if you plug in the numbers it will work for example. -
what sequence is 12 in, it is the second number so n=2
so add 10 to 2 which is 12
So as seen the answer is n+10
thanks and mark me brainliest
please i will mark you brill help me
Answer:
2n + 20
Step-by-step explanation:
39. Find the circumference of a circle with radius of 18 in. Leave your answer in terms of pi
324pi In.
54pi in
36pi in.
18pi in.
Answer:
36pi
Step-by-step explanation:
multiply the radius by 2 to get 36 but dont multiply by pi just put 16π
Answer:
36pi in
Step-by-step explanation:
I figured out what was wrong thanks to the comment up top.
they just want the diameter why didnt they say that :/
Find the equation of the line with slope m=−12 that contains the point (2,−4).
Answer:
y=-12x+20
Step-by-step explanation:
-4=-12(2) +b
-4=24+b
(add 24 both sides)
20=b
slope: -12
y intercept: (0,20)
Answer:
y + 4 = -12(x - 2)
Step-by-step explanation:
Use the point-slope formula for the equation of a straight line:
y - k = m(x - h)
Here m = -12, h = 2 and k = -4, and so we have:
y + 4 = -12(x - 2)
If represents 14 people, how many people would be represented by ? 21 people 14 people 7 people 28 people
Answer:
Answer is 28
Step-by-step explanation:
14+14=28
Answer:
Your answer is 28. I'm sure of it =D
Step-by-step explanation:
Each unit on the grid below represents 1 cm. Find the height of the arrow on a rescaled drawing using the scale 1cm= 0.5 m.
Answer:
8
Step-by-step explanation:
add them duh
One has $1000 in his bank account to use for education after high school he spends 3% of this amount every month how much money does he have in his account every month
Answer:
Every month, he will spend $30 of his $1000.
Step-by-step explanation:
The first thing I did was found out 3% of 1000. To do this, you need to move the decimal point in 3% over twice. Like this:
3 → .03
Then, multiply 1000 by .03.
1000 * .03 = 30
So, this means that he will spend $30 of his money each month.
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Hope this helped, and good luck on your school !! Also, can ya please mark me brainliest, cause I spent 2 hours last night (At like 11:00pm) working on these questions to get the expert title. Now, all I need is one more brainliest title. If you don't do that, it's fine! Hope you have a wonderful day~ !
I need help pls and sorry there is an answer marked it’s because by accident I press it but pls help me
Answer:
2
Step-by-step explanation:
because the outer line is one line and the triangle in other line
Answer:
3
Step-by-step explanation:
There is a line of symmetry from each vertex of the triangle through the square opposite it. I can't draw it out here but there's one going straight down the middle, another going from the triangles leftmost point through the right hand square and another from the triangles rightmost point through the left hand square.
0.5 divided by 0.05 plz show work
Answer:
Step-by-step explanation:
Answer: 10
working below!
The function f(3) = 50.000(0.975)", where x represents the underwater
depth in meters, models the intensity of light below the water's surface in lumens per
square meter. What is the intensity of light 200 meters below the surface
9514 1404 393
Answer:
316 lumens/m²
Step-by-step explanation:
We assume your intensity function is ...
f(x) = 50,000(0.975^x) . . . . x meters below the surface
__
Use 200 for x and do the arithmetic.
f(200) = 50,000(0.975^200) ≈ 316 . . . . lumens/m²
The student council starts the year with a balance of $-15 (they were in debt). It comes up with the idea to sell tickets to a student versus teacher mud fight. The student council fund is now growing by $15 a minute.
1. After 9 minutes of mud fight ticket sales, what was the balance?
2. How many minutes did it take before the student council was able to pay off their debt?
Answer:
sorry di ko din po knows
Step-by-step explanation:
sorry tagala
Answer:
1. Is 12
Step-by-step explanation:
start -15
tickets $15
min 9
remember you started -15 so the first 15 got you into positive so that one doesnt count wich means you now have to miltiply 15*8=120
Rewrite the equation by completing the square.
x2 + 7x + 12 = 0
Answer:
9x²+12=0
Step-by-step explanation:
Which number equals 9x 100+9* 10+0+1+0
A.900.937
B.909.307
C990.0037
D9090.0037
Answer:
pretty sure its c
Step-by-step explanation:
What is the mean absolute value of the data set below? pls answer ASAP
What is the solution set for (2x-7)^2=25
The solution set for the quadratic equation (2x - 7)² = 25 is 6 and 1.
What is a quadratic equaton?A quadratic equation is an algebraic expression in the form of variables and constants.
A quadratic equation has two roots as its degree is two.
The solution set for a quadratic equation is the roots of the quadratic equation.
Given, (2x - 7)² = 25.
2x - 7 = ± 5.
2x = ± 5 + 7.
x = (± 5 + 7)/2.
x = 12/2 Or 2/2.
x = 6 or 1.
learn more about quadratic equations here :
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Am bad at math I don’t get this
Answer:
x=35 y=18
Step-by-step explanation:
We have two triangles. These triangles are Similar as stated in the statement. Since they are similar, there side length will be in proportion.
To find x and y we need to set up a proportion of the corresponding sides of the triangles.
Let find the corresponding sides of both triangle.
JK corresponds with NM
KL corresponds with ML
JL corresponds with NL
To find side x we can use this proportion
JK/KL=NM/ML
Plug in the lengths
[tex] \frac{40}{kl} = \frac{16}{14} [/tex]
Cross multiply
[tex]560 = 16kl[/tex]
Divide by 16
[tex]kl = 35[/tex]
so x=35
Now to find y use this proportion
JL/JK=LN/NM
[tex] \frac{45}{40} = \frac{y}{16} [/tex]
Cross multiply
[tex]720 = 40y[/tex]
[tex]y = 18[/tex]
Answer:
X = 35
Y = 18
Step-by-step explanation:
The triangles are similar meaning that they are scaled up and down differently. ( and in this case rotated) Notice the shape of the triangles. The side measuring 40 in the larger triangle correlates to the side measuring 16 in the smaller triangle. We can use this to find the scale difference between the two triangles. 40/16 = 2.5. The larger triangle is scaled up 2.5 times the smaller triangle. X correlates to the side measuring 14. Scale 14 up 2.5 times. 14* 2.5 = 35, so x= 35.
Y correlates to the side measuring 45. Scale 45 down 2.5 times. 45/2.5 = 18. Y = 18