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Archy [21]
2 years ago
14

How many 4-digits number can be formed out of 0,1,2,3,5,7 and 8. If:

Mathematics
1 answer:
Bad White [126]2 years ago
5 0

Answer:

Below in bold.

Step-by-step explanation:

No repetition.

There are a total of 7 numbers.

For the number to be even it must end in 0,  2 or 8.

The other 3 numbers will be the number of permutations of 3 from  the 6 other numbers.

Number of 4 digit numbers ending in 0

= 6P3 = 6! / 6-3!

= 120.

Now the number could also end in 2 or 8,

so there are 3*120 = 360 4-digit even numbers (no repetition).

With repetition.

There are 3 * 7^3 = 1029  with repetition.

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What is 14,11,8 sequence <br>​
TEA [102]

Each step subtracts 3 from the previous number.

14 - 3 = 11

11 - 3 = 8

The sequence will continue:

8 - 3 = 5

5 - 3 = 2

2 - 3 = -1

Etc.

14, 11, 8, 5, 2, -1...

8 0
3 years ago
if there were 161,809,242 females in the US in 2014 and 5.9% were diagnosed with diabetes, how many females had been diagnosed?
AlekseyPX
Im 90% sure its 9546745 females

8 0
3 years ago
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Help!!!!!!!!!!!!!!!!!!!!!!!!!!
lana [24]
3.78 x 10^9 = 3780000000 = 3,780,000,000

3,780,000,000 / 14,000 = 270,000

270,000 = 2.7 x 10^5
8 0
3 years ago
A boat takes 3.6 h to travel downstream from its dock to a fishing hole. If the water were still, it would have taken 4.5 h to m
salantis [7]
Given:

t1 = 3.6 h
t2 = 4.5 h
x = speed of boat
y = speed of water

Required:
a) Expression of distance traveled with moving water with 3.6h
     Expression of distance traveled with moving water with 4.5h
b) Solve for y
c) Percent of boat's speed is the water current

Solution:

Working formula: 
distance = velocity*time

a) For travelling downstream, we get the equation

d = (x +y)*3.6

For travelling upstream, we get the equation

d = (x-y)*4.5

b) Setting the distance as equal for travelling upstream or downstream, we arrive at the equation of

(x+y)*3.6 = (x-y)*4.5
3.6x + 3.6y = 4.5x - 4.5y
8.1y =0.9x
y = x/9

c) percentage = 1/9*100% = 11.1%

<em>ANSWERS: a) d = (x+y)*36; d = (x-y)*4.5
</em>
                     <em>b) y = x/9
</em>                     <em>c) 11.1%</em> 

3 0
2 years ago
Need someone to help me please!
mylen [45]

Answer:

\huge\boxed{\sf A = 8\ cm\²}

Step-by-step explanation:

<u>Given data:</u>

Base = b = 4 cm

Height = h = 4 cm

<u>Required:</u>

Area of triangle = A = ?

<u>Formula:</u>

A = bh / 2

<u>Solution:</u>

A = (4)(4) / 2

A = 16 / 2

A = 8 cm²

\rule[225]{225}{2}

Hope this helped!

<h3>~AH1807</h3>

4 0
2 years ago
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