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madreJ [45]
2 years ago
15

A stick was broken into two pieces. The length of the first piece is 28 cm more than the second piece. The total length of the t

wo pieces is 56 cm. Find the length of the first piece.
Mathematics
1 answer:
Reika [66]2 years ago
6 0
84 cm because you HAVE to add them together.
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20 different comic books will be distributed to five kids. (a) How many ways are there to distribute the comic books if there ar
sveta [45]

Answer:

a) 21684

b) 15504

Step-by-step explanation:

a) Distribute the comic books as follows

only to 1 kid          one way   but we have five kids then  5

to two kids                         C₂₀,₂  =  20! /2! ( 20-2)!    =  20*19 /2  =   190

To three   C₂₀,₃   =  20! /3! ( 20 - 3)!       =  20*19*18 /6               =  1140

To four     C₂₀,₄    =   20 ! / 4! ( 20 - 4 )!   = 20*19*18*17 /4*3*2   =  4845

To five     C₂₀,₅    =    20!  /5! (20 - 5 )!    = 20*19*18*17*16/5*4*3*2*1

C₂₀,₅    =  15504

Then total ways of distribution are:

5 + 190 + 1140 + 4845 + 15504   =  21684

b)   C₂₀,₅  we know from a    that is equal to  15504

7 0
2 years ago
The equation d=13/v shows that the density of a particular substance equals a mass of 13 grams divided by the volume of the subs
stich3 [128]
D = M/V where M=mass and V = volume

Assume the Mass is 1 kg and the Volume = 1 cm³, so d= 1/1 kg/cm³

for V=0.1 → d = 1/0.1 = 10 kg.cm³
for V = 0.01 → d = 100.kg.cm³
for V = 0.001 → d = 1000.kg.cm³
for V = 0.000001 → d = 1,000,000.kg.cm³
and when Volume → 0. density →∞
.
3 0
3 years ago
Find the selling price of the following item.<br> Original price of an iPod: $350<br> Discount 20%
Nata [24]

Answer: 280 dollars

Step-by-step explanation:

if the IPOD is 350,

10% out of 350 is 350/10=35

20% is 35*2=70

the price will be 350-70=280

4 0
2 years ago
What is the cost of the bill if a drink costs $3, a meal costs $20, an appetizer costs $5.50 and a slice of cake cost $3. 75?​
skelet666 [1.2K]
32.25 is the cost of the bill
8 0
3 years ago
4) What is the cost of 1st class ticket (x) and the cost of a coach ticket (y) *
Kobotan [32]

Answer:

1st class - 22 people

coach - 57 people

Step-by-step explanation:

$85 x 22 people = $1870

$60 x 57 people = $3420

22 people + 57 people = 79 people

$1870 + $3420 = $5290

6 0
3 years ago
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