Ask question

Ask question

All categories

3 years ago

6

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?

1 answer:

maksim [4K]3 years ago

5 0

Answer:

.20(7) ≤ x .20(8)

Step-by-step explanation:

let 'x' = amount of time in REM sleep

You might be interested in

The population of Maricopa County has been increasing for the past few decades. In 2016, the Maricopa County population is appro

maria [59]

Answer: 3,965,481

Step-by-step explanation:

Given: In 2016, the Maricopa County population is approximately 3.817 million.

i.e. Initial population= 3.817 million =3,817,000

Of the population increases from the current population by 3.89 % over the next 5 years,

Population increased = 3.89% of 3,817,000

= 0.0389 (3817000)

= 148481.3 ≈ 148481

Population in 2021= 3,817,000 +148,481 =3,965,481

Hence, the population in 2021 = 3,965,481

3 0

3 years ago

the width of a rectangle is 5 meters less than it’s length. The area of the rectangle is 84m^2. Find the length and width of the

larisa [96]

16.8m is the length and 5m is width

3 0

3 years ago

17.The diameter of a circle has endpoints P(–7, –10) and Q(3, 2).

ser-zykov [4K]

A.) (-2,-4)
(7+3)/2=5, (10+2)/2=6
(-7+5,-10+6)
(-2,-4)
b.)r^2=244
10^2+12^2=244
r=2(61)^(1/2)
c.)(x+2)^2+(y+4)^2=244

7 0

4 years ago

When 1,000 children were inoculated with a certain vaccine, some developed inflammation at the site of the inoculation and some

Dima020 [189]

Answer: C

Step-by-step explanation: C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

Total: 1000

20 had fever, so 1000 - 20 = 980 who did not have fever

Total who did not have fever: 980

As 880 not fever and not inflamation, 980 - 880 = 100

So, 100 had inflamation but not fever.

We need the 2 statements and they alone do not answer the question

3 0

3 years ago

Determine the number of possible triangles, ABC, that can be formed given A = 30°, a = 7, and b = 18.

zzz [600]

Answer:

none

Step-by-step explanation:

We are given a triangle ABC with ∠A = 30°, sides a = 4 and b = 10.

According to the 'Law of Sines- Ambiguous Case', we have,

If a < b×sinA, then no triangle is possible.

If a = b×sinA, only one triangle is possible

If a > b×sinA, two triangles are possible.

So, we have,

b×sinA = 10 × sin30 = 10 × 0.5 = 5.

Now, as

4 = a < bsinA = 5.

We get, according to the rule, no triangle is possible.

8 0

2 years ago