Given that the random variable X = number of days a student sleeps in during the week, what is the correct notation for the probability that a student will sleep in at least 3 days?​

Answers

Answer 1

Answer:

X > 3/7

Step-by-step explanation:

X > 3/7

We know that the student sleeps in at least 3 days, but we don't know what the exact number is, we use an inequality where X is greater than or equal to 3 out of the 7 days.

Answer 2
X>3/7


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Related Questions

Expand: y(0.5 +8)
Expand: 4(3+4x-2)

Answers

Answer:

.5y+8y=

8.5y

12+16x-8=

16x+4

Step-by-step explanation:

use the distributive property to solve the equation then simplify and combine like terms

-X^2 + 5x + 24
The x-intercepts occur where x = ... and x =...

Please help! Also please don’t comment just for points it’s not funny and I need this so I can raise my score back up.

Answers

Answer:

x = 8 and x = -3.

Step-by-step explanation:

-x^2 + 5x + 24 = 0   at the x intercepts.

Divide thru by -1:

x^2 - 5x - 24 = 0

(x - 8)(x + 3) = 0

x - 8 = 0 ,  x + 3 = 0

x = 8 and x = -3.

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Answers

Answer:

W t f

Step-by-step explanation:

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The volume of a box is 192 cubic inches.
The height is 4 inches. The width is 2
inches more than the length. Find the
missing dimensions.

Answers

Answer:

base=24

Step-by-step explanation:

2*4=8

192/8=24

1. Jared has portrait in shape of a square. One side length, in inches, is the sum of 7 and L

Jamilah also has a portrait in shape of a square. The length of one side is 3 inches longer

than one side of Jared's portrait. What is one side length of Jamilah's portrait?

Answers

Answer:

7 + L + 3 = L + 10

Step-by-step explanation:

In ΔOPQ, q = 83 inches, p = 80 inches and ∠P=70°. Find all possible values of ∠Q, to the nearest degree

Answers

Answer:

77.12°

Step-by-step explanation:

Given that:

In triangle OPQ

∠P=70°

line q = 83 inches

line p = 80 inches

To find ∠Q; we use the since rule:

[tex]\dfrac{Sin \ Q}{q} = \dfrac{Sin \ P}{p}[/tex]

[tex]\dfrac{Sin \ Q}{83} = \dfrac{Sin \ 70}{80}[/tex]

[tex]Sin \ Q= \dfrac{Sin \ 70 \times 83}{80}[/tex]

[tex]\text{Sin \ Q= 0.9749}[/tex]

[tex]Q=Sin ^{-1}( 0.9749)[/tex]

[tex]\mathbf{Q = 77.12^0}[/tex]

which function is the inverse of y=2^x

Answers

Answer:

The inverse of

y

=

2

x

is

y

=

log

2

x

Explanation:

This is how to do it.

From the given

y

=

2

x

interchange the variables so that

x

=

2

y

then solve for y:

x

=

2

y

take the logarithm of both sides with base

=

2

log

2

x

=

log

2

2

y

log

2

x

=

y

and

y

=

log

2

x

The graph of

y

=

2

x

and its inverse

y

=

log

2

x

. They are symmetric with the line

y

=

x

graph{(y-2^x)(y-log x/log 2)(y-x)=0[-20,20,-10,10]}

100 points ! What is the area of the following composite figure? All angles are right angles.

24 m^ 2
27 m ^2
29 m^ 2
22 m^ 2

Answers

Answer:

24m²

Step-by-step explanation:

..,.................

Area = 5*4+2*1+2*1

Area = 20+2+2

Area = 24m²

Answer:

24 m^2

Step-by-step explanation:

We need to study the structure well

We can find the magnitude of the big rectangle. We will need to find the total length and total breadth of the big rectangle

Then we remove the area of the four squared cut out from the big rectangle.

Total length of the rectangle is 5+1+1=7m

Then the length of the breath of the rectangle is 2+1+1=4m

So area of rectangle is given as length × breadth

Area= l×b

Area=7×4=28m²

Area of the big rectangle is 28m²

Then the squared is made of dimension 1m by 1m

Area of a square is s²

Then, a=1m

Area of the square= 1²=1m²

There are four squared side

Then, the total area of the four squared is 4×1=4m²

Then the required area is

Area=Total area - area of four squared side

Area=28m²-4m²

Area =24m²

Area of the figure is 24m²

The correct option is A.

Solve the following equation for x.
3x - 9 = -42

Answers

Answer:

x = -11

Step-by-step explanation:

Add 9 to both sides of the equation

3 − 9 = −42

3 − 9 + 9 = −42 + 9

Simplify

Add the numbers

3 = −33

Divide both sides of the equation by the same term

3 = −33

3/3 = −33/3

Simplify

Cancel terms that are in both the numerator and denominator

Divide the numbers

= −11

Find the proper answer

Answers

I think the answer is C

In a class of 25 students, 16 had at least one pet. What percent is that?
-32%
-40%
-64%
-80%

Answers

Answer:

-64%

Step-by-step explanation:

Hope this helps you

Answer:

64%

Step-by-step explanation:

25 x 0.64 = 16

Please help if you can

Answers

Answer for 1:

19

Answer for 2:

vertical

Answer for 3:

supplementary

Answer for 4:

96°

Answer for 5:

24°

Answer for 6:

120°

Explanation for All Questions:

I'm an Ace, 80% to Genius. Trust me

Clare used 30% less butter this month than last month when baking holiday treats. If she used 250 tablespoons of butter last month, how many tablespoons did she use this month?

Answers

Answer:

175 tablespoons.

Step-by-step explanation:

250 × 30% = 75

250 - 75 = 175


Can you help me with number 8

Answers

Answer:

A. :)

Step-by-step explanation:

Brainly?

(½ point for model; ½ point for correct simplified expression)
(8x + 2) + (-9x + 7)

Answers

Answer:

Simplified= −x+9

Step-by-step explanation:

Can someone help please

Answers

Answer:

50

Step-by-step explanation:

20+20=40

5+5=10

40+10=50

Answer: P=50

Step-by-step explanation: 20 m = length and 5 m = width

Solution:

P=2(l+w)=2·(20+5)=50

So the perimeter is 50

The number of people who sleep 8-8.9 hr per night is about how many times the number who sleep 6-6.9 hr a night

Answers

Answer:

3.75 times

Step-by-step explanation:

From the histogram plot of the data :

The number of people who sleep 8 - 8.9 hour per night is about 375

The number of people who sleep 6 - 6.9 hour per night is about 100

Therefore, to compare how many times the number of people who sleep 6 - 6.9 hrs and 8 - 8.9 hrs :

8 - 8.9hrs = 6 - 6.9 hrs * x

375 = 100x

x = 375 / 100

x = 3.75

Hence, the number of people who sleep 8 - 8. 9 is 3.75 times the number of people who sleep 6 - 6.9

round 34 1/8 to the nearst whole number​

Answers

Answer:

34

Step-by-step explanation:

Because it is a mixed fraction, it tells us the whole number already. After that, we need to look at the actual fraction part and decide if it's large enough to round the whole number up. 1/8 is not, so we keep the whole number at 34

Answer:

That would be 34

Hope that helps!

Step-by-step explanation:

what percent of 82 is 9.75. Round your answer to the nearest tenth

Answers

Hi there!

8 would be the nearest ten of 7.995..

1.Multiply 82 with 0.01:

[tex]82[/tex]·[tex]0.01=0.82[/tex]

2.Multiply the terms:

[tex]0.82[/tex]·[tex]9.75=7.995[/tex]

3.Round the term:

[tex]7.995=8[/tex]

Therefore, 82% of 9.75 in nearest tenth is 8.

q + 12 ≥ 5
Solve the inequality

Answers

Answer:

Q≥-7

Step-by-step explanation:

Q+12≥5 subtract 12 from both sides Then simplify

Find the unknown length in the pair of similar figures.

Answers

Answer:

when figure is similar then ratio of sides are equal .so,

15/5 = y/9

5y = 135

y= 27

Helen is putting together a makeup kit for a friend there are 6 Types of eyeshadow and 3 types of mascara to choose from how many different kits can Helen make btw I’m in 7 grade

Answers

she can make 3 since theres only 3 mascaras? and for each makeup kit she can add two eyeshadows and one mascara

what is the difference of 20 and 3

Answers

Answer:17

Step-by-step explanation:

20-3=17

The difference of the two numbers would be 17

Need help fast!!
What is the value of x

Answers

Answer:

4.5

Step-by-step explanation:

also i need help on thiss plzz

Answers

Answer:

14y + 77 + 2y = 13

Step-by-step explanation:

Substitute: 7(2y + 11) +2y = 13

Distribute: 14y + 77 +2y = 13

3.5(2.25 + x) = 14
x=

Answers

Answer:

x = 1.75

Step-by-step explanation:

Given

3.5(2.25 + x) = 14 ( divide both sides by 3.5 )

2.25 + x = 4 ( subtract 2.25 from both sides )

x = 1.75

Answer:

iho7v078f0

Step-by-step explanation:


Write in standard form
823000000

Answers

Answer:

8.23 × 10^8

Step-by-step explanation:

count how many spaces there are between the first number and the last number. standard form is between 1-10

The answer is 8.23000000 x 10^8

HELP FAST



How many cubes with side lengths of
cm does it take to fill the prism?
1 cm
7
cm
4
2 cm
cubes

Answers

Answer:

14

Step-by-step explanation:

1 x 2 x 1 3/4 (or 1.75) = 3.50

Now, divide 3.50 by 1/4 (or 0.25) to get 14

14 1/4 centimeter cubes will fill the prism

You are in a hurry and I don't think that you really need the explanation so its 224 cubes

Convert the following equation to slope-intercept form:
5x - 15y = 105

Answers

Answer:

D

Step-by-step explanation:

You need to solve the equation so that it looks like y = mb + b

So -15y = -5x + 105, then divide both sides by -15 so y = -5/-15 x + 105/-15

y = [tex]\frac{1}{3}[/tex] x  - 7

Please help me answer this!

Answers

Answer:s manifestos icons did go oc so oc do is do is do well oc well onto anton

Step-by-step explanation:

sorry need points

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