Answer:
500Hertz
Step-by-step explanation:
Using the formula for calculating frequency in terms of period expressed as;
f = 1/T
f is the frequency
T is the period
Given
T = 0.002seconds
Frequency f = 1/0.002
Frequency f = 500Hertz
Hence the frequency in hertz for the sound wave is 500Hertz
(2/7×8/4)+2/3÷(2/6×3/6+1/6)
Answer:
Answer attached
Step-by-step explanation:
The County Seaters’ basketball team won 14 games and lost 11 games this season. What percent of its games did the County Seaters win?
Answer:
78.57% (79% If you round)
Step-by-step explanation:
Emma buys two bus tickets to Bradford. She pays with a £10 note. How much change will she get?
Hello there I hop you are having a good day :)
So, if she brought 2 tickets an they cost £4.00 you would add £4.00 + £4.00 = £8.00 and then you would take that away from the £10.00 - £8.00 = £2.00 so Emma would get £2.00 change :) hopefully that helps you.
find the area of this triangle please help me!❤
Answer: 42 mm^2
Step-by-step explanation:
A=bh/2
b=7, h=12
7*12=84, 84/2=42
Answer:
area of the triangle
[tex]( \frac{1}{2} \times 12 \times 7 )\\ 42 {mm}^{2} [/tex]
Robert spun the fair spinner shown below 1,060 times,
About how many times would Robert expect to spin a 1, 3, or 8?
Answer:
About 400 times
Step-by-step explanation:
Given
[tex]n = 1060[/tex]
See attachment for spinner
Required
Determine the number of times an outcome of 1, 3 or 8 is expected
First, calculate the theoretical probability of 1, 3, or 8
This is calculated as:
[tex]Pr = P(1) + P(3) + P(8)[/tex]
The spinner is divided into 8 equal segments and each outcome appears once.
So, we have:
[tex]Pr = \frac{1}{8}+\frac{1}{8}+\frac{1}{8}[/tex]
Take LCM and add
[tex]Pr = \frac{1+1+1}{8}[/tex]
[tex]Pr = \frac{3}{8}[/tex]
So, the expected number of times (E) is:
[tex]E = Pr * n[/tex]
[tex]E = \frac{3}{8} * 1060[/tex]
[tex]E = \frac{3* 1060}{8}[/tex]
[tex]E = \frac{3180}{8}[/tex]
[tex]E = 397.5[/tex]
Approximate
[tex]E = 398[/tex]
This means about 400 times
Use the information for the question below.
Project A Project B Time 0 -$10,000 -$10,000 Time 1 $5,000 $4,000 Time 2 $4,000 $3,000 Time 3 $3,000 $10,000
If WiseGuy Inc. uses payback period rule to choose projects, which of the projects (Project A or Project B) will WiseGuy Inc. prefer?
a. Project A and Project B have the same ranking,
b. Project A
c. Cannot calculate a payback period without a discount rate.
d. Project B
Answer:
The correct option is d. Project B.
Step-by-step explanation:
Note: See the attached excel file for the calculation of the Cumulative Cash Flows of Projects A and B.
Payback period refers to the number of time or period that is needed to recoup the amount of money spent a project. The
payback period rule states that when considering two or more projects, a project with the shortest payback period should be selected.
Payback period can be calculated as follows:
Payback period = Time before full recovery + (Unrecovered cost at start of the time of full recovery / Cash flow during the time of full recovery) ………………. (1)
Using the information in the excel file (in red color), equation (1) can be calculated for Project A and Project B as follows:
Project A payback period = 2 + ($1,000 / $3,000) = 2.33
Project B payback period = 2 + ($3,000 / $10,000) = 2.30
Since the payback period of Project B payback period which is 2.30 is lower than the Project A payback period of 2.33, Project B should be selected.
Therefore, the correct option is d. Project B.
A study conducted by a group of yoga professionals claim that introducing meditation activities in workplace can significantly increase the performance of the employees. After finding out about this study, the HR department of company ABC introduces similar activities in their office and encourages every employee to participate. At the end of one month the department is interested in checking the claims of the study. The department selects a random sample of employees and collects information on the number of hours they have spent meditating (X) and they score their performances based on their revenue contribution to the company (Yi). They estimate the following regression function:
^Y = 45.63 + 3.60X
where ^Y denotes the predicted value of the score obtained by the individual and X denotes the number of hours they spend meditating. The SE(^P1) is 1.01. The HR department wishes to test whether or not meditating increases the performance of their employees. Which of the following are the null and the alternative hypotheses of the test the department wishes to conduct?
A. H0: beta1 = 0 vs H1: beta1 is not equal to 0.
B. H0: beta1 = 0 vs H1: beta1 < 0.
C. H0: beta1 = 3.60 vs H1: beta is not equal to 3.60.
D. H0: beta1 = 0 vs H1: beta1 > 0.
A. The value of the t-statistic associated with the test the HR department wishes to conduct is____.
At the 5% significance level, the department would____the null hypothesis.
Answer:
D
T= 3.56
Reject
Step-by-step explanation:
The estimated equation of an employee's commitment to the business (Y) based on the amount of hours they spend meditating (X) is:
[tex]\hat Y = 45.63 + 3.60 *X[/tex]
Also;
[tex]\hat \beta_1[/tex] the coefficient of X from the equation Y on X = 3.60
Standard error S.E [tex]\hat \beta_1[/tex] = 1.01
The null & alternative hypothesis:
[tex]H_o : \beta_1 = 0 \\ \\ H_1 : \beta > 0[/tex]
Test statistics:
[tex]T = \dfrac{\hat \beta _1}{S.E (\hat \beta _1)}[/tex]
[tex]T = \dfrac{3.60}{1.01}[/tex]
T = 3.56
Value of T-statistics = 3.56
P-value = P(t > T)
here;
t = standard t variable with a degree of freedom = 100 - 1 = 99
∴
P value = P(t > 3.56)
P value = 1 - P(t < 3.56)
P value = 1 - 0.9997
P value = 0.0003
Since p-value is less than ∝ at 0.05
We reject the [tex]H_o[/tex] (null hypothesis)
solve the given system of equations 2x + 8y= 5 and 24x - 4y = -15
9514 1404 393
Answer:
(x, y) = (-1/2, 3/4)
Step-by-step explanation:
A graphing calculator does a nice job of finding the solution.
(x, y) = (-1/2, 3/4)
__
You can eliminate y by adding twice the second equation to the first.
(2x +8y) +2(24x -4y) = (5) +2(-15)
50x = -25
x = -1/2 . . . . . . divide by 50
__
24(-1/2) -4y = -15 . . . . .substitute for x in the second equation
-4y = -3 . . . . . . . . . add 12
y = 3/4 . . . . . . . . . divide by the coefficient of y
The solution is (x, y) = (-1/2, 3/4).
choose the correct symbol to compare the fraction 8/10 and 4/5
Answer:
[tex]\frac{8}{10} =\frac{4}{5}[/tex]
Step-by-step explanation:
Both the numerator and denominator of the fraction [tex]\frac{8}{10}[/tex] share a common factor of 2, so you can divide the fraction by [tex]\frac{2}{2}[/tex](1). This leaves you with:
[tex]\frac{8}{10}[/tex] ÷ [tex]\frac{2}{2}[/tex] = [tex]\frac{4}{5}[/tex]
This means that the fraction [tex]\frac{8}{10} =\frac{4}{5}[/tex].
Alondra studies 7 hours this week for end-of-year exams. He spends 1 hour on English and an equal number of hours each on math, science and history.
Write an equation and find the solution.
Step-by-step explanation: 5 19 7 36
Alondra studies 7 hours this week for end-of-year exams. He spends 1 hour on English and an equal number of hours each on math, science and history.
Write an equation and find the solution
Total hours = english hours + ( math + science + history ) hours
Total hours = english hours + other subjects hours
7 hours = 1 hours + 3( x ) hours solve for x
(7 - 1) hours = (1 - 1) hours + 3x hours
6 hours / 3 = 3x / 3 hours
2 hours = x hours
does the following data show direct variation.
Five times the sum of 4 and some number is 40.
Answer:
5 × 4 = 20 not 40
Step-by-step explanation:
A brand of uncooked spaghetti comes in a box that is a rectangular prism with a length of 11 inches, a width of 3 inches, and a height of 4 1/2 inches. What is the surface area?
Area = 1/2((11+3)×4.5) = 31.5 inch squared
Which line from L, M and N is the line of best fit for this scatter plot?
can you explain to me why it’s that answer
Answer:
it would be line M. because there is more dots around the line than compared to the 9thwr lines so m would be the best choice.
Solve the following equation. log(3x)=log(2x-4) *
log(3x) = log(2x-4)
taking antilog of both sides:
3x = 2x - 4
3x - 2x = -4 [subtracting 2x from both sides]
x = -4
and we're done already!
Howard needs to buy pens and pencils for work. Pens cost $0.40 each and pencils cost $0,25 each. He needs to buy at least 340
pens and pencils combined while spending no more than $100. If x represents the number of pens and y represents the number
pencils, which TWO statements are correct?
A)
x = 40 and y - 320 is a viable solution
B)
*100 and y-260 is a viable solution
x+y s 340 and 0.40x +0.25y 100 models the situation
D)
x + y 2 340 and 0.40x +0.25y = 100 models the situation
E)
x + y2 340 and 0.40x +0.25y2 100 models the situation
Answer:
A and D
Step-by-step explanation:
Please answer number 5 I’ll give brainliest thanks
Answer:
Hello! answer: C
Hope that helps!
Answer:
b
Step-by-step explanation:
Experimental - 5 choices, 1 is Q = 1/5
Theoretical - 5 choices, landed on Q 4 times =4/5
graph your linear equation. y=x÷3
Tessellations
Determine whether the following regular polygon tessellates the plane.
Decagon
a. Yes; measure or interior angle = 144
b. no; measure of interior angle = 144
c. yes: measure of interior angle = 36
d. no; measure of interior angle = 36
Please select the best answer from the choices provided
Answer:
B. No; measure of interior angle = 144
Step-by-step explanation:
I calculated it logically
help me please i dont know how to do these
Answer:
97.34 sorry if this dones't help
Step-by-step explanation:
Answer:
48.67 feet²
Step-by-step explanation:
Formula for the area of a triangle: 1/2BH
15.7 x 6.2 = 97.34
97.34/2 = 48.67
Please help me!!!
If a girl is in 6th grade and has 3 A's 1 B, 1 C and 1 D in grades what is her grade point average.
please help this could determine whether i go to the next grade or not
Answer:
Her GPA is 3
Step-by-step explanation:
an A is 4 points
B is 3 points
C is 2 points
D is 1 point
She has A, A, A, B, C, D for her grades. (6 grades total)
That equals
4 + 4 + 4 + 3 + 2 + 1 = 18 points
Then we divide the points by the number of grades we're looking at.
18/6 = 3
Her grade point average is 3.
Answer:
Grading Chart
A = 4.0 A- = 3.67 B+ = 3.33 B = 3.0 B- = 2.67
C+ = 2.33 C = 2.0 C- = 1.67 D = 1.0 F = 0.0
So your semester GPA is: 3.44
Also your semester Credit Total is: 18
Which equation is true when x =
1
2
?
A.
6
÷
x
=
3
B.
8
x
=
16
C.
x + 2 = 1
D.
10
÷
x
=
20
Answer:
Step-by-step explanation:
NO ONE IS TRUE
6/12=2NOT 3
8*12=96NOT16
12+2=14 NOT 1
10/12=1.2 NOT 20
56000009x434383985934863
Answer:
2.43255071E22
Rounding to the nearest tenth: 2.4
Nearest hundredth: 2.43
Step-by-step explanation:
Hope I helped! :)
Answer:
2.43255e16
Step-by-step explanation:
These cones are similar. Find the surface
area of the smaller cone. Round to the
nearest tenth.
2 cm
3 cm
Surface Area = [ ? ) cm2 Surface Area = 75 cm2
Helppppp plssss
Answer:
33.3 cm²
Step-by-step explanation:
Recall: Area Scale Factor = (Linear Scale Factor)²
Area scale factor = surface area of bigger cone/surface area of smaller cone
Let the surface area of the smaller cone be represented as x
Therefore,
Area scale factor = 75/x
Linear scale factor = radius of bigger cone/radius of smaller cone = 3/2
Thus:
75/x = (3/2)²
75/x = 9/4
Cross multiply
x*9 = 75*4
9x = 300
Divide both sides by 9
x = 300/9
x = 33.3 cm² (nearest tenth)
Write each rational numbers as a decimal rounded to 4 decimal places.
43/10 = and 4 15/18 =
Answer:
Step-by-step explanation:
3
Help with this Problem Oneo
Answer:
9 cm
Step-by-step explanation:
ST = 3/4 × 12 = 9 cm
_____
Answer:
9 cm
Step-by-step explanation:
set up a proportion SR/NM=ST/NP, since you know all but one of the lines, sub them into the equation, 15/5=ST/3. solve the side you know to get 3=ST/3, multiply both side by 3 to eliminate the fraction and get the answer, 9=ST.
if you have any questions, leave them in the comments and i will try to answer them, if this helped, pls give brainliest
Natalie paid $20.7 for 3 small pizzas and a salad which was $3.
Write an equation to represent the situation
Solve the equation to find the cost of one pizza. Show your work
Answer: x=5.9
Equation: 20.7= 3x+3
Step-by-step explanation:
20.7=3x+3
-3 -3
——————
17.7= 3x
————-
3
5.9= X
Was that ok? :) ur a smart kid so I’m sure you’ll figure this out but if u do have questions just put it in the comments :)
These marbles are placed in a bag and two
of them are randomly drawn.
What is the probability of drawing two yellow
marbles if the first one is NOT placed back into
the bag before the second draw?
Give your answer as a rational number, reduced to
simplest terms.
1
[ ?
Hint: Multiply the probability of the 1st Event by the
probability of the 2nd Event to get your answer.
Answer: 1/45
Step-by-step explanation:
guys help meeee im timed
Given a bag of marbles 3 are red, 5 are black, and 8 are green, what is the
probability that the you do not pull out a red marble?
Answer:
13/15
86.67%
Step-by-step explanation:
non red marbles = 13
total marbles = 15
13/15 = 0.866667
86.67%