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Yuliya22 [10]
3 years ago
10

* PLEASE HELP WILL GIVE BRAINIEST* Your portfolio must include a minimum of the following five types of equations and solutions:

Mathematics
1 answer:
gulaghasi [49]3 years ago
6 0
2 step equation:
4x + 3 = 19

2 step equation w/ fractions:
(4/3)x + 5 = 17

Distributive Property:
4x(6 - 2) - 10 = 20

Decimals:
4.3x + 0.7 = 5

Real world equation:
Sharon's restaurant is bringing in money from customers, and she needs to know how much she needs to pay off the bill for the electricity to run the place.  To turn the electricity on, she has to pay $25.  For every hour that the electricity is on for, she has to pay $4.  How many hours can she have the electricity on for if she makes $49 profit?

I hope these helped!  Not too sure about the last one, I sort of let me imagination run wild.  In any case, don't hesitate to ask me questions if you have any further inquiries. <3
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A coin is tossed 5 times. Find the probability that all are heads. Find the probability that at most 2 are heads.
fenix001 [56]

Answer:

1/32

15/32

Step-by-step explanation:

For a fair sided coin,

Probability of heads, P(H) = 1/2

Probability of tails P(T)  = 1/2

For a coin tossed 5 times,

P( All heads)

= P(HHHHH),

= P (H) x P(H) x P(H) x P(H) x P(H)

= (1/2) x (1/2) x (1/2) x (1/2) x (1/2)

= 1/32 (Ans)

For part B, it is easier to just list the possible outcomes for

"at most 2 heads" aka "could be 1 head" or "could be 2 heads"

"One Head" Outcomes:

P(HTTTT), P(THTTT) P(TTHTT), P(TTTHT), P(TTTTH)

"2 Heads" Outcomes:

P(HHTTT), P(HTHTT), P(HTTHT), P(HTTTH), P(THHTT), P(THTHT), P(THTTH), P(TTHHT), P(TTHTH), P(TTTHH)

If we count all the possible outcomes, we get 15 possible outcomes representing "at most 2 heads)

we know that each outcome has a probability of 1/32

hence 15 outcomes for "at most 2 heads" have a probability of

(1/32) x 15  = 15/32

8 0
3 years ago
Read 2 more answers
I need help with this
Llana [10]

Answer:

? = 4 units

Step-by-step explanation:

'2'  is to  ' 7+2 '     as  ?   is to   '14 + ? '

2/ 9 = ? / (14 + ?)      cross mutiply

28 + 2? = 9?

28 = 7?

? = 4

4 0
1 year ago
how many liters of water should be evaporated from 60 liters of a 28% salt solution so that the remaining solution contains 32%
Nitella [24]
The answer is 7.5 liters that should of evaporated 
6 0
2 years ago
The median size of a new singlefamily home grew from 1638 ft2 in 1997 to 2067 ft2 in 2008. What is the percent of​ increase?
forsale [732]
\dfrac{2067-1638}{1638}\approx0.2619=26.19\%
8 0
3 years ago
Using the graph,order the lines from steepest slope to the least steep slope.
VashaNatasha [74]

Answer:

where is the graph, I don't see, but I want to help

8 0
3 years ago
Read 2 more answers
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