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motikmotik
3 years ago
9

Safari isn’t helping so please help!!

Mathematics
1 answer:
Pepsi [2]3 years ago
3 0

third option is the correct answer....

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HELP!!Luke sells pins for $4 each and rings for $6 each. Complete the equation which determines the number of pins x and the num
kicyunya [14]

Answer:

4x+4y=$40 4 pins and 4 rings

Step-by-step explanation:

Making a table is the easiest for this equation.

6/4=10

12/8=20

18/12=30

24/16=40

6 0
3 years ago
True or false: Most proofs in geometry are called direct proofs because theorems and postulates are used to prove a statement us
vivado [14]

Answer:

The statement is true

Step-by-step explanation:

Most proofs are direct proofs becaue theorums & postulates prove them true straightforwardly :)

5 0
3 years ago
Rewrite the following phrase as a mathematical expression: twice a number increased by eighteen. 2n + 18 18n + 2 2 + 18 2(18n)
VladimirAG [237]
I am not sure about the last two phrases, but here's what I think.
2(n+18)
18(2+n)
3 0
3 years ago
Read 2 more answers
FIND THE VALUE OF X AND Y.(ordered pairs)<br><br>(x+y,0)=(8,x-y)​
Aliun [14]

Step-by-step explanation:

We know that...

x+y (from the first pair) corresponds to 8(in the second pair)..

0 (from the first pair) corresponds to x-y (in the second pair)..

Hence,

x + y = 8 \\ x - y = 0

By simply adding the two equations we get,

2x = 8 \\ x  = 4

Hence,

By substituting x=4, we get that y=4

Hence,

x=y=4

5 0
3 years ago
A shipment of ten smartphones contains five with cracked screens. If sold in a
Natalka [10]

Answer: 73.81%

Step-by-step explanation:

We know that 5 out of 10 have broken screens. So each smartphone has a probability of 50% of having a broken screen.

The probability that at most 3 of them have a broken screen is:

The probability that none has a broken screen p = 0

This is 0 because we are selling six of them and only 5 of them have the screen in good condition.

The probabilities are calculated as:

P = A*6!/(6 - n)!*n!

where n is the number of broken phones.

the probability is equal to

if we have only one broken screen:

for the broken phone, we have a 5/10 probability.

for the other 5 nice phones, the probabilities will be 5/9. 4/8. 3/7, 2/6 and 1/5 (the number changes because when we select one of the phones, the total number of phones decreases)

A = (5*5*4*3*2*1)/(10*9*8*7*6*5)

and is similar thinking for 2 and 3 broken phones.

Probability that one has a broken screen:

  P = ((5*4*3*2*1*5)/(10*9*8*7*6*5))*6 = 0.0238

Probability for two broken screen:

  P = (5*4*3*2*5*4)/(10*9*8*7*6*5))*6*5/2 = 0.2381

For 3 broken phones the probability is:

  P = ((5*4*3*5*4*3)/(10*9*8*7*6*5))*6*5*4/(2*3) = 0.4762

total probability = 0.0238 + 0.2381 + 0.4762 = 0.7381  

or 73.81% in percentage form.

6 0
3 years ago
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