Mathematics College

This is my study island math and I need all the questions to be done so I’m doing them in order.

Answers

Answer 1

Answer:

Step-by-step explanation:

Hope I helped

Answer 2

Answer:

The answer is A, $11.60

Step-by-step explanation:

0.66=spent 9 minutes

0.66x9=5.94

5.94+5.66=$11.60

Btw, luv ur profile pic uwu!

Related Questions

The ratio of shells to driftwood Gus found is shown on the ratio table. Complete the ratio table to make an equivalent
ratio.

Answers

Answer:

Step-by-step explanation:

It’s getting multiplied by 3

so if 6x3=18 then 18x3=54

:DDD

Fruit flies, like almost all other living organisms, have built-in circadian rhythms that keep time even in the absence of external stimuli. Several genes have been shown to be involved in internal timekeeping, including per (period) and tim (timeless). Mutations in these two genes, and in other genes, disrupt timekeeping abilities. Interestingly, these genes have also been shown to be involved in other time-related behavior, such as the frequency of wingbeats in male courtship behaviors. Individuals that carry particular mutations of per and tim have been shown to copulate for longer than individuals that have neither mutation. But do these two mutations affect copulation time in similar ways? The following table summarizes some data on the duration of copulation for flies that carry either the tim mutation or the per mutation (Beaver and Giebultowicz 2004).

Mutation Mean copulation duration (min) Standard deviation of copulation duration Sample size, n
per 17.5 3.37 14
tim 19.9 2.47 17

Assume that the copulation time data are normally distributed. Do tim and per mutations lead to different mean copulation durations? Determine the absolute value of the test statistic for the appropriate test.

Answers

Answer:

The decision Rule is

Reject the null hypothesis

The conclusion is

There is sufficient evidence to states that tim and per's mutations lead to different mean copulation duration.

The test statistics is [tex]z =-2.2187[/tex]

Step-by-step explanation:

From the question we are told that

The Mutation Mean copulation duration is for per [tex]\= x_1 = 17.5[/tex]

The Mutation Mean copulation duration is for tim [tex]\= x_2 = 19.9[/tex]

The Mutation Standard deviation copulation duration for is per [tex]s _1 = 3.37[/tex]

The Mutation Standard deviation copulation duration for is tim [tex]s _2 = 2.47[/tex]

The sample size for per is [tex]n_1 = 14[/tex]

The sample size for tim is [tex]n_2 = 17[/tex]

The null hypothesis is [tex]H_o : \mu_1 = \mu_2[/tex]

The alternative hypothesis is [tex]H_a : \mu_1 \ne \mu_2[/tex]

Generally the test statistics is mathematically represented as

[tex]z = \frac{\=x_1 - \= x_2 }{ \sqrt{\frac{s_1^2 }{n_1} + \frac{s_2^2 }{n_2} } }[/tex]

=> [tex]z = \frac{17.5 - 19.9 }{ \sqrt{\frac{3.37^2 }{14} + \frac{2.47^2 }{17} } }[/tex]

=> [tex]z =-2.2187[/tex]

From the z table the area under the normal curve to the left corresponding to -2.2187 is

[tex]P(Z < -2.2187) = 0.013254[/tex]

Generally the p-value is mathematically represented as

[tex]p-value = 2 * P(Z <-2.2187 )[/tex]

=> [tex]p-value = 2 * 0.013254[/tex]

=> [tex]p-value = 0.02651[/tex]

Let assume that the level of significance is [tex]\alpha = 0.05[/tex]

From the value obtained we see that [tex]p-value < \alpha[/tex] hence

The decision Rule is

Reject the null hypothesis

The conclusion is

There is sufficient evidence to states that tim and per's mutations lead to different mean copulation duration.

Help ASAP pls What is the y intercept of the linear equation shown on the graph

A. (0,-70)
B. (0,-50)
C. (0,1/2)
D. (0,100)

Answers

Answer:

(0, -50)

Step-by-step explanation:

pick any 2 points such as (100,0) and (120,10)

to get from point (100.0) to point (120,10) you had to rise 10 and run 20

so the slope m =rise 10/run20= 1/2

the equation of the line is (y-y1)=m(x-x1)

(y-0)=(1/2)(x-100) for the slope m=1/2 and point on the line (100,0)

y=( x/2)-50 if you distribute

compare this with the equation

y=mx+b wher m=slope and bb is y-intercept

so the y-intercept is -50

Answer:

Step-by-step explanation:

trust

factor completely 16a^3-50a^2+36a

Answers

Answer: (2a+4)(8a-9)

Step-by-step explanation:

16a^3-50a^2+36a 16(36)=576

18,32( add to 50, multiply to 576)

16a^3+18a+32a+36

2a(8a-9)4(16-9)

(2a+4)(8a-9)

Compute the probability of Carl turning 44 years old (event A), given that Susan has reached the age of 44 (event B).

Answers

Answer:

Events A and B are independent of each other, so it would be 0.95726

Step-by-step explanation:

Explain how to find the x-intercept of the function y= log5x+7 log 5 ⁡ x + 7 .

Answers

Answer:

y=\log _(5)x

Step-by-step explanation:

Michael received $275 more from relatives than friends. He received $4275 dollars in all, how much money did he receive from relatives and how much money did he receive from friends?

Answers

Answer:

4000 thousand from relatives and 275 from friends

Answer:

Michael received $2275 ftom relatives and $2000 from friends

Step-by-step explanation:

Let r represent the amount of money from relatives

Let f represent the amount of money from friends

f+r=4275

f+275=r

Use substitution, f+(f+275)=4275

2f+275=4275

2f=4000

f=2000

Substitute 2000 in for f

2000+275=r

2275=r

ANSWER:

Micheal received $2275 from relatives and $2000 from friends

$46 for 5 toys

$ / toy

Answers

It’s $9.2 for each toy

Answer:

$9.20 for 1 toy

Step-by-step explanation:

If it's $46 for 5 toys, we can divide both $46 and 5 to get $9.20 for 1 toy.

To which expression does 3(a + 2b) - 3a simplify? a. -6a + 6b c. 2b b. 3a + 6b d. 6b

Answers

Expand
3a + 6b - 3a
The 3a and (-3a) cancel out
Leaving you with 6b
The answer: d. 6b

Answer:

d. 6b

Step-by-step explanation:

Simplify the following:

[tex] \longrightarrow [/tex] 3(a + 2b) - 3a

3(a + 2b) = 3a + 6b:

[tex] \longrightarrow [/tex] 3a + 6b - 3a

Grouping like terms,

3a + 6b - 3a = 6b + (3a - 3a):

[tex] \longrightarrow [/tex] 6b + (3a - 3a)

3 a - 3 a = 0:

[tex] \longrightarrow [/tex] 6b

Is brainly getting hacked?

Answers

I don’t think so
Hope that help

Answer:

I think so

Step-by-step explanation:

Lin runs 5 laps around a track in 6 minutes.
1. How many minutes per lap is that?
2. How many laps per minute is that?
3. If Lin runs 21 laps at the same rate, how long does it take her?

Answers

Step-by-step explanation:

its takes her 1.2 mins it would take her 126 mins

[tex]0=24-16t^2[/tex]

Answers

Answer:

Step-by-step explanation: Simplify both sides of the equation.

0=−16t2+24

Step 2: Add 16t^2 to both sides.

0+16t2=−16t2+24+16t2

16t2=24

Step 3: Divide both sides by 16.

16t^2/16=24/16

t^2=3/2

Step 4: Take square root.

t=± √ 3/2

t=1.224745,−1.224745

Aaron scored 452.65 marks out of 600 in the final examination. How many marks did he lose?

Answers

Answer:

He lost 147.35 marks

Step-by-step explanation:

Take the total marks and subtract the marks he got to find the marks he lost

Answers

Answer:

[tex] JM = 60 units [/tex]

Step-by-step explanation:

Given:

[tex] JM = 9x + 6 [/tex]

[tex] JK = 5x [/tex]

[tex] KM = 3x + 12 [/tex]

[tex] JK + KM = JM [/tex] (segment addition postulate)

[tex] (5x) + (3x + 12) = (9x + 6) [/tex] (substitution)

Solve for x

[tex] 5x + 3x + 12 = 9x + 6 [/tex]

Collect like terms

[tex] 5x + 3x - 9x = -12 + 6 [/tex]

[tex] -x = -6 [/tex]

Divide both sides by -1

[tex] x = 6 [/tex]

[tex] JM = 9x + 6 [/tex]

Plug in the value of x

[tex] JM = 9(6) + 6 [/tex]

[tex] JM = 54 + 6 [/tex]

[tex] JM = 60 units [/tex]

A robot can complete 7 tasks in 5/6 hour. Each tasks takes the same amount of time. A. How long does it take the robot to complete one tasks? B. How many tasks can the robot complete in 1 hour?

Answers

Step-by-step explanation:

5/6 = 50 minutes

50 divided by 7 = (your answer)

At a basketball game, a vender sold a combined total of 108 sodas and hot dogs. The number of sodas sold was three times the number of hot dogs sold. Find the number of sodas and the number of hot dogs sold.

Answers

Answer:

Hot dogs - 27, soda - 81

Step-by-step explanation:

Soda to Hot dog ratio = 3:1

If the total is 108, we can divide 108/4 ---> 27

now, multiply 3 and 1 by 27 and there you go!

edit: also if you don't know why I divided 108 by 4, its because you add together both sides of the ratio

hujknjk jk jjkjj help

Answers

Answer:

x≤ -7 or x≥ -4

Step-by-step explanation:

There is a closed circle at -7 and the line goes to the left

x≤ -7

There is a closed circle at -4 and the line goes to the right

x≥ -4

Since they both can't be true at the same time it is an or

Let x = 0.7777.....

Multiply both sides by 10

10x = 7.7777......

x = 0.7777...... {Subtract}

9x = 7

x = 7/9

The triangles are congruent by the SSS congruence theorem.

Which transformation(s) can map ΔLMN onto ΔL'M'N'?

translation only

reflection only

rotation then translation

reflection then translation

Answers

Rotation then transition

Answer:

Rotation then Transition C on Edge.

Step-by-step explanation

Because im smart like that

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