The average adult spends 7 to 8 hours sleeping. About 20% of the time you sleep is spent in rapid eye movement (REM) sleep which is associated with dreaming. Write and Solve a compound inequality to determine how much time is spent in REM sleep for the average adult?

Answers

Answer 1

Answer:

.20(7) ≤ x .20(8)

Step-by-step explanation:

let 'x' = amount of time in REM sleep

Answer 2

Answer:

1.4[tex]\leq[/tex] x [tex]\leq[/tex] 1.6

Step-by-step explanation:

You can start off by writing the inequality that 7(.20) is less than/equal to x which is less than/equal to 8(.20). Then, you just multiply the numbers and you have the 20% that you spend in REM sleep.

Hope this helps!


Related Questions

can someone help me with this ​

Answers

The answer is y=- 7/6x+8
Plz mark me Brainly

Todd takes 3 hours to weed the garden. Sophie takes 3.5 hours to weed the garden. How long would they take to weed the garden working together?

Answers

Answer:

I think the answer would be 6.5

Answer:

6.5

Step-by-step explanation:

Which fractions are equivalent to 40%? Check all that apply

Answers

Boosting this comment!

Answer:

b, c, d & e is the answer

Step-by-step explanation:

Please Give Brainliest

i got my question as 4r-2r=5-3r, how do i solve this​

Answers

Here, I wore it down and took a picture of it.

Answer:

well if ur looking for r, then r=1 hope dis helps

Step-by-step explanation:

4r-2r=5-3r

combine like turms

2r=5-3r

+3r   +3r

5r=5

/5    /5          5/5=1

R=1

think about brinlist thank you

What type of triangle is this

Answers

Answer:

isosceles

Step-by-step explanation:

Answer:

An isosceles

Solve the following compound inequality

Answers

Answer:

i believe your answer is correct

Step-by-step explanation:

write each fraction or mixed number as a repeating decimal. look up at the pictures!!​

Answers

-0.1231231231 would be the answer

Answer:

-0.123

Step-by-step explanation:

...............

Does the graph represent function?

Answers

Answer:

no

Step-by-step explanation:

Nicholas has some cans at home to donate to the soup kitchen, but he decides to start a can drive at his school to see if other students will help. The table represents the number of cans donated, y, which is dependent on the number of days cans are collected, x.

A 2-column table with 3 rows. Column 1 is labeled x with entries 4, 7, 10. Column 2 is labeled y with entries 955, 1660, 2365.

Find the linear equation that represents the scenario.

Answers

Answer:

y = 235x + 15

Step-by-step explanation:

Equation of a Line

The equation of the line in slope-intercept form is:

y=mx+b

Where:

m = slope  

b  = y-intercept.

The point-slope form of the equation of a line is:

y - k = m ( x - h )

Where m is the slope and (h,k) is a point through which the line passes.

We are given 3 points and we must provide the equation of the line that passes through them all in slope-intercept form.

Selecting the points (4,955) and (7,1660) we can calculate the slope of the line by using the formula:

[tex]\displaystyle m=\frac{y_2-y_1}{x_2-x_1}[/tex]

[tex]\displaystyle m=\frac{1660-955}{7-4}=\frac{705}{3}=235[/tex]

Now we use the point-slope equation with the first point (4,955):

y - 955 = 235 ( x - 4 )

Operating:

y - 955 = 235x - 940

y = 235x - 940 + 955

y = 235x + 15

The third point (10,2365) should pass through this line. To verify, substitute:

2365 = 235(10) + 15 = 2350 + 15= 2365

Since the identity is true, the equation is correct:

Answer:

y = 235x + 15

Answer:

A

Step-by-step explanation:

If you could just tell me the coordinates that would be great thanks

Answers

Answer:

A: (2,5)

B: (4,8)

C: (8,6)

A rectangular dog cage has a length of 4 1/2 feet and a width of 3 3/7 feet. What is the area of the cage?
(Help please)

Answers

Step-by-step explanation:

Area of rectangle =height×base

4 1/2×3 3/7=9/2×24/7=216/14=15 6/14=15 3/7

i need help on this plz
a. b. c. d. ???

Answers

Answer:

I'm pretty sure the answer is B

i think the answer is b !!

given g(x) = 1/x+2 and h(x) = 3x
check all restrictions on the domain of gh

Answers

Answer:

Step-by-step explanation:

C

please help I don't know what it is ​

Answers

Answer:

2. is the correct one

Step-by-step explanation:

4x-3x^3+2

Answer:

-x^3-4x-2

step by step

What is the solution to the system of equations graphed below?

Answers

Answer:

a) (2,4)

Step-by-step explanation:

it's where the points meet

The slope is -1 and the y-intercept is -5. Write a linear equation in slope-intercept form.

Someone pls help me!

Answers

ExplanationSlope-intercept form

[tex]y = mx + b[/tex]

where m = slope and b = y-intercept.

We have both given slope and y-intercept. We can simply substitute the given slope and y-intercept in slope-intercept form.

Substitution

Substitute m = -1 and b = - 5 in the equation.

[tex]y = - 1x - 5 \\ y = - x - 5[/tex]

We don't usually write 1x or -1x instead we write -x or x.

Answer

[tex]y = - x - 5[/tex]

Please help (;´༎ຶٹ༎ຶ`)
Solve the following inequality for s. Write your answer in simplest form.
8s + 3 < 9s +1

Answers

Answer:

s could be 3

Step-by-step explanation:

You can rent a car via two options. Option A charges $20 per day plus $0.10 per mile. Option B charges $0 per day, but $0.50 per mile. How many miles must you drive in one day for option A to be cheaper?

Answers

Answer:

50 miles

Step-by-step explanation:

Step one

given data

let the total charge be y and the number of miles be x

Option A charges $20 per day

plus $0.10 per mile.

y= 20+0.1x---------------1

Option B charges $0 per day,

but $0.50 per mile

y= 0.5x---------------2

equate 1 and 2 we have

20+0.1x=0.5x

20=0.5x-0.1x

20=0.4x

divide both sides by 0.4

x= 20/0.4

x=50 miles

d ÷ 3 = 138
what is d

Answers

Answer:

D equals 414

Step-by-step explanation:

414 is correct because to check do 414 divided by 3 to equal 138

MARK ME AS BRANLIEST

Answer:

its 414 because if you multiply 138 and 3 you get 414 then if you divide 414 and 3 you get 138

Step-by-step explanation:

find the slope of the line which is perpendicular to the line 7 x + 11 Y - 2=0​

Answers

Answer:

[tex]\huge\boxed{slope=-\dfrac{7}{11}}[/tex]

Step-by-step explanation:

METHOD 1

The slope-intercept form of an equation of a line:

[tex]y=mx+b[/tex]

[tex]m[/tex] - slope

[tex]b[/tex] - y-intercept

We have the equation in the general form [tex](Ax+By+C=0)[/tex].

Convert to the slope-intercept form:

[tex]7x+11y-2=0[/tex]    subtract 7x from both sides

[tex]11y-2=-7x[/tex]     add 2 to both sides

[tex]11y=-7x+2[/tex]     divide both sides by 11

[tex]y=-\dfrac{7}{11}x+\dfrac{2}{11}[/tex]

METHOD 2

The general form of an equation of a line:

[tex]Ax+By+C=0[/tex]

The slope:

[tex]m=\dfrac{-A}{B}[/tex]

We have

[tex]7x+11y-2=0\\\\A=7;\ B=11;\ C=-2[/tex]

Substitute:

[tex]m=\dfrac{-7}{11}=-\dfrac{7}{11}[/tex]

I really need help for this geometry question, I would appreciate any help thank you.

Answers

Answer:

x = 30.96

Step-by-step explanation:

tan θ = opposite / adjacent

tan θ = 12/20

tan θ = 0.6

[tex]tan^{-1}[/tex](0.6) = 30.96

Paige plans to go to the fair with three of her
friends. She needs to earn at least $60 to
attend the fair. If Paige earns $7.50 per hour
babysitting, how many hours will she need to
work in order to have enough money to go to
the fair with her friends?

Answers

Answer:

how many hours will she need to work in order to have enough money to go to the fair with her friends? $60/$7.5/h = 8h

Step-by-step explanation:

Answer:

8 hours

Step-by-step explanation:

60=7.50x

60 will represent how much money she needs to earn.

x= number of hours Paige needs to work

[tex]\frac{60}{7.50} =\frac{7.50x}{7.50}[/tex]

[tex]x=8[/tex]

Paige needs to work 8 hours in order to have enough money to go to the fair with her friends.

GKHCFJXDGHZSR OMH PLS ANSWER QUICK I GIVE BRAINLIEST

Answers

Answer: [tex]4 \frac{4}{9}[/tex]

Step-by-step explanation:

What does X = In question 2

Answers

Answer:

10

Step-by-step explanation:

10/5=2/1 or 2

4+2=6

Subtract.
Your answer should be a polynomial in standard form.
(-5m2 – 8) - (-3m² + m +2)

Answers

Answer: -2m2 -m - 10

Step-by-step explanation:

(-5m2 - 8) - (-3m2 + m + 2)

Everything is behind the (-) when you have a parenthesis chang the sign so and let the () so will be

-5m2-8 +3m2 - m -2

Now you are going to add or subtract numbers for the one the same letter ( base) and for the one that don't have a other letter (base) you will let it like this so will be

-5m2 + 3m2 = -2m2

-8 -2 = -10

-2m2 - m - 10

Hope helps

Can anyone help me answer this question?

Answers

Answer:

Vertex - (2,1)

minimum

Step-by-step explanation:

minimum y≥1

15 POINTS!!!!!NEED HELP ASAP!!!!

Answers

Answer:

You answer should be B) Distinct parallel lines.

Sorry if Im wrong

Step-by-step explanation:

Can someone help this is due tomorrow!!

Answers

Answer:

angle 1 = 100 degrees

angle 2 = 53 degrees

Step-by-step explanation:

diagonals of a rhombus bisect angles so angles 2 and 3 are both 53

angle 1 can be found by adding 37 and 53 and deducting that sum from 180

Help me out...

✨p l e a s e✨

In a right triangle, the length of one leg is 4 units. The length of the other leg is 5 units. What is the length of the hypotenuse?


A.) 3 Units

B.) [tex]\sqrt18[/tex] units

C.) [tex]\sqrt20[/tex] units

D.) [tex]\sqrt41[/tex] units

Answers

Answer:

D

Step-by-step explanation:

a^2+b^2=c^2

16+25=41

4. Write the equation of line that is perpendicular to y= -1/3x + 7 and has a y intercept of -1.
1

Answers

Answer:

         y = 3x - 1

Step-by-step explanation:

Two lines are perpendicular if the product of theirs slopes is equal -1:

y=m₁x+b₁   ⊥   y=m₂x+b₂   ⇒    m₁×m₂ = -1

y = -1/3x + 7   ⇒   m₁=-1/3

-1/3×m₂ = -1        ⇒    m₂ = 3

The y-intercept is b=-1 so the equation in  slope-intercept form:

                                                y = 3x - 1

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