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lorasvet [3.4K]
3 years ago
11

Solve for f.-11f = 7(1 - 2f) + 5f =​

Mathematics
1 answer:
Afina-wow [57]3 years ago
5 0

Answer:

f = 4

Step-by-step explanation:

Given

- 11f = 7(1 - 2f) + 5 ← distribute and simplify right side

- 11f = 7 - 14f + 5

- 11f = 12 - 14f ( add 14f to both sides )

3f = 12 ( divide both sides by 3 )

f = 4

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What is the probability that the first card is a kingking and the second card is a kingking if the sampling is done with​ replac
IRINA_888 [86]
You want to draw 2 kings from a 52 card deck. And you do it with replacement.
There are 4 kings in a standard deck. The probability of getting one of them is 
4/52 on the first draw.

For the second draw the probability is the same.
4/52

The probability for both happening is 
(4/52)*(4/52) = (1/13)*(1/13) = 1/169 = 0.001597
5 0
3 years ago
Which of the following statements is true?
Hitman42 [59]
If my memory serves me well, the only wtatement which is true is the last one: <span>D) All linear equation and all quadratic equations are polynomial equations.</span>
8 0
3 years ago
Read 2 more answers
Exactly 120 tickets were sold for a concert. The tickets cost $12 each for adults, $10 each for seniors, and $6 each for childre
Gemiola [76]
A=adult tickets
c=chlderenticekts
s=sinior tickets

a=c

a+c+s=120
2a+s=120

total made is 1100
12a+6c+10s=1100
sub
a=c
12a+6a+10s=1100
add
18a+10s=1100

multiply first equation by -9 and add to other equation

-18a-9s=-1080
18a+10s=1100 +
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answer is B
5 0
3 years ago
last night, julie's pet hamster zoe kept julie awake for at least an hour running on her exercise wheel and scratching at the co
borishaifa [10]

Answer: x+y\geq 1, x>\frac{1}{4} ,  x\geq 2y and y\geq 0

Step-by-step explanation:

Here,  x represents the number of hours Zoe spent running on her wheel and y represents the number of hours spent scratching her cage.

Julie was awoke for at least an hour running on her exercise wheel and scratching the of her cage.

⇒ x+y\geq 1

She ran on her wheel at least twice as long as she scratched at the corners of her cage.

⇒ x\geq 2y

Also, She spent more than 1/4 hour running on her wheel.

⇒ x>\frac{1}{4}

And, we know that number of hours can not be negative.

⇒  y\geq 0

Therefore, the complete system of inequality which shows the given situation is,

x+y\geq 1, x>\frac{1}{4} and x\geq 2y, y\geq 0

Note: the feasible region ( covered by the given system) is shown in the below graph.


6 0
3 years ago
The Surface Area of this cylinder rounded to the nearest square
kipiarov [429]

Answer:

1728

Step-by-step explanation:

2\pir h

2\pi(11) × 14

968

B=\pi r^{2}

B=\pi11^2 =121\pi

S=2\pirh + 2\pi r^{2}

S=968 +2 x 121

S=968 +242\pi= 1728

6 0
3 years ago
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