A group of band instructors answered a survey about hours of rehearsal per week and number of competitions won. The graph shows the results of this survey.


Based on these results, if a band practices 5 hours per week next season, which is the best estimate of the number of competitions the band can expect to win?
A.
36
B.
31
C.
27
D.
24

Answers

Answer 1

Answer: B. 31

Step-by-step explanation:

This linear regression was constructed by relating the hours practiced per week and the number of competitions won.

Going by this graph, the number of competitions they can expect to win at 5 practices a week is 31.

This is derived by looking for the point where 5 competitions on the x-axis intersects with the line. This point is at 31 competitions on the y axis which would make it the answer.

A Group Of Band Instructors Answered A Survey About Hours Of Rehearsal Per Week And Number Of Competitions
Answer 2

Answer:

its B

Step-by-step explanation:

i took the quiz on PLATO


Related Questions

PLEASEE HELP!!


How long would it take a ball to reach the ground if the height was modeled by
h(t) = -4t2 + 12t + 100, where t is the time in seconds?
A) about 6.7 seconds
B) about 7.6 seconds
C) about 3.7 seconds
D) about 5.2 seconds

Answers

Answer:

A)t=6.7

Step-by-step explanation:

to understand thisyou need to know about:quadratic equationquadratic equation word problemssolving quadraticgiven:

h(t) = -4t² + 12t + 100

to solve:

t

tips and formulas:the Ball will hit the ground when the height is 0solving quadratics using quadratic formulaPEMDASlet's solve:

[tex]step - 1 : \: define[/tex]

[tex] - 4 {t}^{2} + 12t + 100 = 0[/tex]

[tex]step - 2 : \\ divide \: both \: sides \: by \: - 4[/tex]

[tex] {t}^{2} - 3t - 25 = 0[/tex]

[tex]step - 3 : \\ solve \: the \: quadratic[/tex]

[tex]formula : \\ x = \frac{ - b± \sqrt{ {b}^{2} - 4ac } }{2a} [/tex]

[tex]define \: a ,b \: and \: c \\ which \: are \: 1, - 3 \: and \: - 25 \: respectively[/tex]

[tex]t = \frac{ - ( - 3)± \sqrt{ {( - 3)}^{2} - 4.1. - 25 } }{2.1} [/tex]

[tex]t = \frac{ 3± \sqrt{ 9 + 100} }{2} [/tex]

[tex] t = \frac{3 + \sqrt{ 109 } }{2} [/tex]

[tex]t = \frac{3 - \sqrt{ 109 } }{2} [/tex]

[tex]t = 6.7 \\ t = - 3.7[/tex]

[tex]as \: we \: know \: time \: cannot \: be \: negative[/tex]

[tex] \huge \therefore \: t = 6.7[/tex]

the length of a wooden frame is 1 foot longer than it width and its area is equal to 12ft2​

Answers

Answer:

no lo seee jajajajjaja x

ytgddd no so

Step-by-step explanation:

Solve the equation using inverse operations. Check your solutions. In your final answer, include all of your work.

[tex]5 - 2x^2 = - 15[/tex]

Answers

Answer:

[tex]x=\sqrt{10}[/tex]

Step-by-step explanation:

The given equation is :

[tex]5-2x^2=-15[/tex]

We need to solve it using inverse operations.

Subtract 5 from both sides of the equation.

[tex]5-2x^2-5=-15-5\\\\-2x^2=-20\\\\2x^2=20\\\\x^2=10\\\\x=\sqrt{10}[/tex]

So, the solution of the given equation is [tex]x=\sqrt{10}[/tex].

lan is buying apples at the farmer's market.
The apples come in packages of different sizes.
Choose the package that is the best buy.

Answers

i think you may need a picture; nobody can help if we don’t know the size of the different sizes of the packages (:

1. 2x + 4y i don't know the answer

Answers

Answer:

Factor: 2(x+2y)

Step-by-step explanation:

I don’t know how you want it solve but I factor it.

If you don’t want it factor text me back on how you want it to be answer.

Answer:

2x+4y

Step-by-step explanation:

There are no like terms. you can't possibly add this.

In a classic Conan Doyle story, Sherlock Holmes solves a crime mystery by recognizing that a guard dog didn't bark. Therefore, the dog must have known the perpetrator. Holmes' reasoning goes like this: if the guard dog doesn't know a person, then it barks. The dog didn't bark. Therefore, it knew the person.

Which rule of inference is being used here?

a. Addition.
b. Simplification.
c. Conjunction.
d. Modus Ponens.
e. Hypothetical Syllogism.
f. Disjunctive Syllogism.
g. Modus Tollens.
h. Resolution.

Answers

Answer:

G. Modus tollens

Step-by-step explanation:

This question used the inference called modus tollens.

Modus tollens is a a valid form of argument that is of this form below:

If S, then T

if not S, then not T.

S = dog doesn't know perpetrator

Not S = dog knows who the perpetrator is

T = the dog barked

Not T = the dog did not bark.

So if we put this into the statement in bold letters, we would have:

The dog doesn't know perpetrator, so it barked.

And,

The dog didn't bark, so it knows the perpetrator.

Can someone help me with this question please

Answers

Answer:

yes

Step-by-step explanation:

4 7/9 can be rewritten as 4 14/18

2 1/3 can be rewritten as 2 6/18

now the sum can be calculated:

4 14/18 + 2 6/18 = 6 20/18 = 7 2/18

This is within the tolerance of 7 1/18 to 7 3/18, so it will fit.

I'm in need of some desperate help ​

Answers

Answer:

77/134 or 0.5746

Step-by-step explanation:

The approximate relative frequency is "the number of times that the event occurs during experimental trials, divided by the total number of trials conducted."

So we need to identify the number of times the event occured, the amount of times children chose sweet snacks, and the total number of trials conducted. So since the question wants the approximate relative frequency by column, we use the number 134 for the total number, and 77 for the number of times the event occurred. We then divide 77 by 134, which looks like this: 77/134. In decimal form, this equals 0.5746. It can't be simplified anymore in fraction form, so 77/135 would be another way to answer.

The ratio of number of male and female teachers in a school is 3:4. Find the number of male teachers if there are 16 female teachers​

Answers

Answer:

12 male teachers

Step-by-step explanation:

If the ratio is 3:4, and the number of female teachers is 16, then the number of male teachers must be 12. This can be confirmed by multiplying both 3 and 4 by 4, or 12/16 = 3/4.

Answer:

12 male teachers.

Step-by-step explanation:

if there is 16 females and the ratio is 3:4 it would be 12 due to 4 times 4 being 16. Meaning that i would do 3 times 4 which would result in having 12 male teachers.

which of the following equations best represents the graph below ​

Answers

Answer:

y=(4/3)x-4

Step-by-step explanation:

5 2/3 divided by 3/2
Please help

Answers

Answer:

I think is 3 7/9

Step-by-step explanation:

hope it helps

Answer:

fraction form: 34/9

decimal form: 3.7 (repeating)

mixed number form: 3 7/9

hope it was helpful! ^^

What is 3.4 dropped to 28%

Answers

Answer:

28/100×3.4

0.28×3.4

0.952

2x - 4
5
= 4
What does x equal

Answers

Answer:

x=20, please confirm as problem layout is incorrect.

Step-by-step explanation:

I’m going to assume that this means 2/5x-4=4

You get 2/5x=8

X=20

How to do 2x+4=9? Giving brainliest

Answers

Add 4 and 4 to both sides.

2x=9 42x=9+4

Simplify 9+4 to 13 2 x = 13 2x=13 3

Divide both sides by 2.

Final Result: x= 13/2

Hi there!

[tex]9-4=5[/tex]

[tex]5[/tex]÷[tex]2=2.5[/tex]

x=2.5

Please answer this. Will mark brainliest whoever gives an good answer

Answers

Answer:

Step-by-step explanation:

6) n + 13

7) 3n

8) n - 4

9) n + 5

10) 7 *n =  7n

11) n - 14

12) [tex]\frac{n}{5}[/tex]

A gardening company sells clay flower pots and plastic flower pots. There must be at least 2 pots in each shipment, but there cannot be more than 8 in a shipment. Additionally, the shipment must weigh less than 100 pounds. Each shipment container weighs 20 pounds, and there is 1 pound of packing material. A clay flower pot weighs 15 pounds, whereas a plastic flower pot weighs 7.5 pounds.

A) Suppose that Horace wanted to buy 2 clay pots and 5 plastic pots. Would he be able to get all the pots in one shipment? Explain how you determined your answer.

B) Suppose that Jaleesa wanted to buy 4 clay pots and 4 plastic pots. Would she be able to get all the pots in one shipment? Explain how you determined your answer.

Answers

Answer:

I am 100% Sure it's A) Suppose that Horace wanted to buy 2 clay pots and 5 plastic pots. Would he be able to get all the pots in one shipment? Explain how you determined your answer.

I think he would be able to get all the pots in 1 shipment because he spent too much time on making money and now he has enough for this.

Step-by-step explanation:

Therefore,he will get all the pots in one shipment.

What is the simplification?

Simplification is reducing the expression/fraction/problem in a simpler form. It makes the problem easy with calculations and solving.

Here given that,

A gardening company sells clay flower pots and plastic flower pots. There must be at least 2 pots in each shipment, but there cannot be more than 8 in a shipment.

Additionally, the shipment must weigh less than [tex]100[/tex] pounds. Each shipment container weighs [tex]20[/tex] pounds, and there is one pound of packing material.

A clay flower pot weighs [tex]15[/tex] pounds, whereas a plastic flower pot weighs [tex]7.5[/tex] pounds.

A) Suppose that Horace wanted to buy [tex]2[/tex] clay pots and [tex]5[/tex] plastic pots.

So as per this information he would be able to get all the pots in one shipment because he is spending too much time on making money and now he has enough for this.

Hence, he will get all the pots in one shipment.

To know more about the simplification

https://brainly.com/question/12795317

#SPJ2

The students in Mr. Sanchez's class are converting distances measured in miles to kilometers. To estimate the number of kilometers, Abby takes the number of miles, doubles it, then subtracts 20% of the result. Renato first divides the number of miles by 5 and then multiplies the result by 8.

Write an algebraic expression for Abby's method.



Write an algebraic expression for Renato's method.

Answers

Step-by-step explanation:

hay! these is my answer,,,,,, I hope these will help

Abby’s Expression:

Double m, giving 2m. She then takes 20% of the result, which we can write 0.2(2m). Finally she subtracts this from 2m, giving 2m−(0.2)2m

2m − (0.2)2m

Renato’s Expression:

Divide m by 5, giving m ÷ 5 = m/5, and then multiplies the result by 8, giving:

8(m/5)

Three friends (A, B, and C) will participate in a round-robin tournament in which each one plays both of the others. Suppose that

P(A beats B) = 0.5
P(A beats C) = 0.6
P(B beats C) = 0.9

and that the outcomes of the three matches are independent of one another.

a. What is the probability that A wins both her matches and that B beats C?
b. What is the probability that A wins both her matches?
c. What is the probability that A loses both her matches?
d. What is the probability that each person wins one match? (Hint: There are two different ways for this to happen.)

Answers

Answer:

0.27 ; 0.30 ; 0.20 ; 0.21

Step-by-step explanation:

Given that :

P(A beats B) = 0.5

P(A beats C) = 0.6

P(B beats C) = 0.9

Since the outcomes are independent :

A.) probability that A wins both her matches and that B beats C

P(A beats B) * P(A beats C) * P(B beats C)

0.5 * 0.6 * 0.9 = 0.27

B.) probability that A wins both her matches

P(A beats B) * P(A beats C)

0.5 * 0.6 = 0.3

C.) probability that A loses both her matches?

(1 - P(A beats B)) * (1 - P(A beats C)

(1 - 0.5) * (1 - 0.6)

0.5 * 0.4 = 0.20

D.) probability that each person wins one match

Either (A beats B), (B beats C). (C beats A) OR (A beats C), (C beats B), (B beats A)

Hence;

(0.5 * 0.9 * (1 - 0.6)) + (0.6 * (1 - 0.9) * (1 - 0.5)) = 0.21

Which pair of angles in the correct category to indicate whether the pair of angles is pair of vertical angles, a pair of line angles or neither .

Answers

We’re is the picture

x
2V2
45°
у
4V6
A) X= 4, y=
3
B) x=4V2, y=2V2
C) x = 4, y = 2V2
416
D) x=4V2, y=
3

Answers

Answer:

c

Step-by-step explanation: since i helped can i have brainlist please :D

Type the missing number in this sequence: -45, -43, -41, -39, -37, -35, ___ whats the next number?

Answers

Answer: -33

Step-by-step explanation: pattern is +2

Answer:

-33

Step-by-step explanation:

The sequence for this equation is plus two for every number so all you have to do its -35+2 which is -33

Given. R=0 3 -4 5 and S=-2 -8 0 2. what is X if X+R=S?

Answers

Answer:

[tex]X =\left[\begin{array}{cc}-2 &-11\\4 &-3\end{array}\right][/tex]

Step-by-step explanation:

Given

[tex]R =\left[\begin{array}{cc}0&3\\-4&5\end{array}\right][/tex]

[tex]S =\left[\begin{array}{cc}-2&-8\\0&2\end{array}\right][/tex]

[tex]X + R = S[/tex]

Required

Find X

[tex]X + R = S[/tex]

Make X the subject

[tex]X = S - R[/tex]

Substitute values for S and R

[tex]X =\left[\begin{array}{cc}-2&-8\\0&2\end{array}\right] - \left[\begin{array}{cc}0&3\\-4&5\end{array}\right][/tex]

This can be rewritten as:

[tex]X =\left[\begin{array}{cc}-2 -0 &-8 - 3\\0 - (-4) &2 - 5\end{array}\right][/tex]

[tex]X =\left[\begin{array}{cc}-2 &-11\\4 &-3\end{array}\right][/tex]

Find the equation of the line specified. The slope is 6, and it passes through ( -4,4)



a. y = 6x + 4
b. y = 6x - 20
c. y = 12x + 28
d. y = 6x + 28

Please select the best answer from the choices provided​

Answers

Answer:

d. y = 6x + 28

Step-by-step explanation:

Since the slope and one point are given to us we can put this equation into slope-point form. This is [tex]y-y_{1}=m(x-x_{1})[/tex], so this equation would be y-4=6(x+4). Then solve for y to get the final equation. Once solved for y the slope-intercept equation is y = 6x + 28.

Answer:

d

Step-by-step explanation:

edge

mrs malone's current salary is $15,000 she expects it to increase $1,000 per year . write the first 6 terms of a sequence that represents her salary the first term should be her current salary what does the sixth term represents
pls answer its important ​

Answers

Answer:

15 000, 16 000, 17 000, 18 000, 19 000

6th term would be 20 000 = 1/3 increase from the first year term.

Step-by-step explanation:

14n + 1

15,16,17,18,19

I need help on this question

Answers

The answer to that equation is 64. Hope this helps!

Answer:

64

Step-by-step explanation:

 30    

 —— +  72 simplify which is then 15/1 which is then 15+7^2 =64

 2    

HELP
8 Prove that 8^6+4^11 is divisible by 17. Answer __*17

Answers

Answer:

262,144 goes in the blank

Step-by-step explanation:

8^6 = 262,144

4^11 = 4,194,304

4,194,304 + 262,144 = 4,456,448

4,456,448 ÷ 17 = 262,144

You can use the fact that 8 is cube of 3 and 4 is square of 2.

The value in the blank space given is [tex]2^{18}[/tex]

Given that:To prove that [tex]8^6+4^{11}[/tex] is divisible by 17

Converting  [tex]8^6+4^{11}[/tex]  in terms of 2:

[tex]8^6 = (2^3)^6 = 2^{3 \times 6} = 2^{18}[/tex]

[tex]4^{11} = (2^2)^{11} = 2^{2 \times 11} = 2^{22} [/tex]

Thus,

[tex]8^6 + 4^{11} = 2^{18} + 2^{22} = 2^{18}(1 + 2^{4}}) = 2^{18} \times 17[/tex]

Thus, it is multiple of 17 and thus, divisible by 17.

The value in the blank space given is [tex]2^{18}[/tex]

Learn more about exponents here:

https://brainly.com/question/15993626

Match the number or significant figure to the value or problem

Answers

Answer:

Which circumstance led the Confederacy to think that it could purchase weaponry and supplies to use in the Civil War?

A.  

increased taxation on Southern states

B.  

support from Britain and France

C.  

an abundance of cotton in the Southern states

D.  

profits from the large number of industries

Step-by-step explanation:

What shape is this cross-section?

Answers

Answer:

circle D

Step-by-step explanation:

A circle is formed where the flat rectangle/square and sphere meet

solve for X
please help!

Answers

Answer: should be 3.5

Step-by-step explanation:

Answer:3.5

Step-by-step explanation:

The probability of a potential employee passing a training course is 86%. If you selected 15 potential employees and gave them the training course, what is the probability that more than 11 will pass the test?
a. 0.648
b.0.900
c. 0.352
d. 0.852

Answers

Answer:

d. 0.852

Step-by-step explanation:

For each employee, there are only two possible outcomes. Either they will pass the test, or they will not. The probability of an employee passing the test is independent of other employees. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

In which [tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by the following formula.

[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]

And p is the probability of X happening.

The probability of a potential employee passing a training course is 86%.

This means that [tex]p = 0.86[/tex]

Sample of 15.

This means that [tex]n = 15[/tex]

What is the probability that more than 11 will pass the test?

[tex]P(X > 11) = P(X = 12) + P(X = 13) + P(X = 14) + P(X = 15)[/tex]

So

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

[tex]P(X = 12) = C_{15,12}.(0.86)^{12}.(0.14)^{3} = 0.204[/tex]

[tex]P(X = 13) = C_{15,13}.(0.86)^{13}.(0.14)^{2} = 0.29[/tex]

[tex]P(X = 14) = C_{15,14}.(0.86)^{14}.(0.14)^{1} = 0.254[/tex]

[tex]P(X = 15) = C_{15,15}.(0.86)^{15}.(0.14)^{0} = 0.104[/tex]

[tex]P(X > 11) = P(X = 12) + P(X = 13) + P(X = 14) + P(X = 15) = 0.204 + 0.29 + 0.254 + 0.104 = 0.852[/tex]

The correct answer is given by option d.

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