9514 1404 393
Answer:
No
Step-by-step explanation:
A probability is a unitless value between 0 and 1, inclusive. 9.48 cannot be a probability (too big). 0.4 acres cannot be a probability (has units).
Five times the sum of 4 and some number is 40.
Answer:
5 × 4 = 20 not 40
Step-by-step explanation:
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
graph your linear equation. y=x÷3
Ms. Dodd buys 6 coffees for the teachers for a total of $19.50. Write an equation that can be used to find the cost of one coffee, c.
Answer:
19.50/6=c c=3.25
Step-by-step explanation:
In this case C=3.25
Answer:
19.50÷6= c
Step-by-step explanation:
19.50÷6 =c
divide to find how much 1 cup of coffee is
Help me out it’s important thank youuuu
Answer:
120 000 centimeters
Step-by-step explanation:
Answer:
120,000 cm³
Step-by-step explanation:
Given :-
A block of hay with dimensions 100 cm × 40 cm × 30cm is given .And we need to find the volume of the hay . The hay is in the form of cuboid .We know that the volume of a cuboid is ,
[tex]:\implies[/tex] Volume = l × b × h
[tex]:\implies[/tex] Volume = 100cm*40cm*30cm
[tex]:\implies[/tex] Volume = 1,20,000 cm³
Hence the correct option is B .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:
If a vertical angle has 74 degree and also opposite angle is 2x degree ,what is value of x?
Answer:
x = 37
Step-by-step explanation:
Well if you didn't know vertical angles are congruent ( or equal to each other )
Which means that 74 = 2x
If we want to find the value of x, then we need to get rid of the "2" on 2x
To do so we can divide each side by 2
74 / 2 = 37
2x / 2 = x
we would be left with x = 37
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]
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.
Anna is making a banner out of 4 congruent triangles as shown below. How much blue trim will she need for each side
Answer:
The length of each blue trim is 17.2 inches
Step-by-step explanation:
Given
See attachment for banner
Required
The length of each blue trim
Since all 4 triangles are equal, then the dimension of 1 triangle is:
[tex]Side\ 1 = 10[/tex]
[tex]Side\ 2 = 14[/tex]
The hypotenuse (x) of the triangle blue trim is represented by the blue trim
So:
[tex]x^2 = Side\ 1^2 + Side\ 2^2[/tex]
This gives
[tex]x^2 = 10^2 + 14^2[/tex]
[tex]x^2 = 100 + 196[/tex]
[tex]x^2 = 296[/tex]
Take square root
[tex]x = \sqrt{296[/tex]
[tex]x = 17.2in[/tex]
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:
properties of trapezium
Answer:
The sum of its angles Is 360°(Like any quadrilateral)
Adjacent angles are Supplementary(Add to 180°)
The diagonals Bisect each other
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:
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
(2/7×8/4)+2/3÷(2/6×3/6+1/6)
Answer:
Answer attached
Step-by-step explanation:
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)
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 lines passes through the points (-4, 7) and (5, -8). What is the slope of the line?
Answer:
C
Step-by-step explanation:
The formula to find the slope of a line is:
(y2 - y1) / (x2 - x1)
We can substitute the points (-4, 7) and (5, -8) to find the slope:
(-8 - 7) / (5 - (-4))
(-15) / (5 + 4)
(-15) / 9
This can be simplified to
- 5 / 3
which is option C
Answer:
-5/3
Step-by-step explanation:
m=(y2-y1)/(x2-x1)
m=(-8-7)/(5-(-4))
m=-15/(5+4)
m=-15/9
m=-5/3
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!
guys help meeee im timed
What is 3 fifth of 100
60 I think?
I may be wrong-
Answer:
60
Step-by-step explanation:
Monica ate seven twelfths of a pizza how much of the pizza is left
Answer: 5
Step-by-step explanation: 12-7=5
Answer:
5/12 of the pizza is left.
Step-by-step explanation:
If 12/12 is the whole, and Monica ate 7 slices, all you have to do is subtract 7 from 12. 12-7=5.
sin(A) =
cos(A) =
tan(A) =
m
Step-by-step explanation:
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bBNznn
did you u know that
that ans is i don't khow
Problem: 2=414x - 4+18
Step 1:-16 = 4.14x-4
Step 2: 4 = 4x-4
Step 3: 16 = 41-4
Step 4: 20= 4x
Y = 5
Analyze her work. Did she make a mistake, and if so where?
Answer:
2=414x-4+18
2=414x+14
2-14=414x
-12=414x
-12/414=x
Step-by-step explanation:
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%
Mrs. Watanabe is choosing a cell phone plan. One plan costs $35 a month and includes 450 minutes. The charge for each minute
over 450 is $0.16. The company also offers an unlimited calling plan with a $55 monthly charge.
The number of minutes at which the cost of the two plans will be the same is given by A = 575 minutes
What is an Equation?Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
Let the equation be represented as A
Now , the value of A is
Substituting the values in the equation , we get
Let's call the number of minutes used in a month "m". For the first plan, the cost is a fixed $35 for up to 450 minutes, and then an additional $0.16 per minute for any minutes used beyond 450
C₁(m) = 35 + 0.16(m - 450)
For the second plan, the cost is a fixed $55 per month for unlimited minutes
C₂(m) = 55
when C₁ = C₂ , we get
35 + 0.16(m - 450) = 55
Subtracting 35 on both sides , we get
0.16m - 72 = 20
Adding 72 on both sides , we get
0.16m = 92
Divide by 0.16 on both sides , we get
m = 575 minutes
Hence , the number of minutes is m = 575 minutes
To learn more about equations click :
https://brainly.com/question/19297665
#SPJ2
The complete question is attached below :
Mrs. Watanabe is choosing a cell phone plan. One plan costs $35 a month and includes 450 minutes. The charge for each minute over 450 is $0.16. The company also offers an unlimited calling plan with a $55 monthly charge.At how many minutes would the cost of the two plans be the same?
Write each rational numbers as a decimal rounded to 4 decimal places.
43/10 = and 4 15/18 =
Answer:
Step-by-step explanation:
3
what is the volume of the cube I'm confused (look at the picture to see)
Answer: D (64)
Step-by-step explanation:
My answer is correct because, it's showing that 4 is the length, width, and height. So it bassically 4 x 4 x 4 in other words 4 exponent 3. And 4 exponent 3 would equal 64.
Hope This Helps!
Audrey has $120 to spend on a tennis racket and lessons the racket cost $45 and the lessons cost $15 per hour to find the variable then write and solve an equation to find how many hours of lessons she can afford
Answer:
120 = 15x + 45 5 hours of lessons
Step-by-step explanation:
120 is total money so that goes on one side.
45 is a one-time cost so it is on its own.
15 per hour is another cost but this one depends on a variable so it has an x.
X represents the number of hours.
You put this together to from the equation: 120 = 15x + 45.
Subtract 45 from both sides: 75 = 15x
Divide 15 from both sides: 5 = x.
X = hours so 5 hours
what is 20% off £49.90
Answer:
£9.98
Step-by-step explanation:
Answer:
£39.92
Step-by-step explanation:
Step 1: Find 20% of 49.90 = 9.98
Convert 20% into a decimal[tex]20\%\:=\frac{20}{100}[/tex][tex]=0.2[/tex]Multiply 0.2 to 49.90[tex]=0.2\cdot \:49.9[/tex][tex]=9.98[/tex]Step 2: Now subtract the result from the original price
[tex]49.90 - 9.98[/tex]
[tex]=39.92[/tex]
£39.92 is 20% off £49.90