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3 years ago

PLEASE HELP ASAP I WILL MARK BRAINLIEST IF THERE ARE MULTIPLE ANSWERS!!!!!

Mathematics

1 answer:

igor_vitrenko [27]3 years ago

4 0

Answer:

Attached

Step-by-step explanation:

x+8≥9

x ≥ 9-8

x ≥ 1

picture one is two dimension and picture 2 is number line

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In aâ€‹ lottery, 6 numbers are randomly sampled without replacement from the integers 1 to 50. Their order of selection is not i

nlexa [21]

Answer: 0.444225

Step-by-step explanation:

Given : The total number of tickets = 50

Number of tickets are randomly sampled without replacement =6

Since the order of selection is not important , so we use combinations.

Total number of ways to select 6 tickets = $^{50}C_6$

The number of winning tickets = 6

So, number of tickets that are not winning = 50-6=44

Number of ways of selecting zero winning numbers= $^{44}C_{6}$

Now , the probability of holding a ticket that has zero winning numbers out of the 6 numbers selected for the winning ticket out of the 50 possible numbers would be $\dfrac{^{44}C_{6}}{^{50}C_6}$

$=\dfrac{\dfrac{44!}{6!(44-6)!}}{\dfrac{50!}{6!(50-6)!}}\\\\\\=\dfrac{\dfrac{44\times43\times42\times41\times40\times39\times38!}{38!}}{\dfrac{50\times49\times48\times47\times46\times45\times44!}{44!}}\\\\\\=\dfrac{44\times43\times42\times41\times40\times39}{50\times49\times48\times47\times46\times45}\\\\=\dfrac{252109}{567525}\approx0.444225$

Hence, the required probability = 0.444225

8 0

3 years ago

What is (x) in this problem 3/5=(-x)+1

Maurinko [17]

3/5= -x+1
-2/5= -x

x = 2/5

3 0

4 years ago

A rectangular piece of plywood has a diagonal which measures two feet more than the width. The length of the plywood is twice th

Nina [5.8K]

Answer:

The length of the diagonal = 3.6 feet

Step-by-step explanation:

* Lets change the story problem to equation to solve it

- Diagonal in a rectangle is the line which joining two

opposite vertices in it

- The diagonal , the length and the width formed together right

angle triangle where the diagonal is the hypotenuse of the

triangle and the length, the width are the two legs of the

right angle

- The length of the diagonal d is √(l² + w²) ⇒ Pythagoras theorem

∴ d² = l² + w²

- The diagonal is 2 feet more than the width

∴ d = w + 2

- The length is twice the width

∴ l = w

* Lets substitute the value of d and l in the equation of Pythagoras

∴ (w + 2)² = (2w)² + w² ⇒ solve the bracket

∴ w² + 4w + 4 = 4w² + w² ⇒ collect them in one side and add like term

∴ 4w² + w² - w² - 4w - 4 = 0 ⇒ add the like term

∴ 4w² - 4w - 4 = 0 ⇒ divide all term by 4

∴ w² - w - 1 = 0 ⇒ solve the quadratic using the formula

- In ax² + bx + c = 0

$x=\frac{-b+/-\sqrt{b^{2}-4ac}}{2a}$

∵ a = 1 , b = -1 , c = -1

∴ $x=\frac{-(-1)+\sqrt{(-1)^{2}-4(1)(-1)}}{2(1)}=\frac{1+\sqrt{5}}{2}=1.6feet$

-The value of the width is 1.6 feet

∴ The length = 1.6 × 2 = 3.2 feet

∴ The length of the diagonal = 2 + 1.6 = 3.6 feet

8 0

4 years ago

Pls help I've gotten every question wrong

Jlenok [28]

4 pack: 13/4=3.25
5 pack: 16/5=3.2
8 pack: 28/8= 3.5

the 5 pack is the cheapest per bulb so it has the best value

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3 years ago

I need help pls this is my statistics problem

Julli [10]

Answer:

Step-by-step explanation:

6 0

3 years ago

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