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Harlamova29_29 [7]
3 years ago
5

PLEASE!!!! I NEED HELP!!! 50 POINTS!!!

Mathematics
1 answer:
8090 [49]3 years ago
6 0

Answer: For the first one , the answer is 15 , the equation is 75=2f+2(2f-7.5)

For the Callie question , the answer is 20 , the equation is 110=2f+2(2f-5)

The third answer is 23 and the equation is 144=2(2w+3)+2w

Step-by-step explanation:

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According to a poll, 56% of voters support funding a new community center. A surveyor randomly selects 75 voters and asks each v
Debora [2.8K]

The probability of a person being a supporter of the new community center is 56% or 0.56.

<h2 /><h2>Given to us</h2>
  • 56% of voters support funding a new community center
  • A surveyor randomly selects 75 voters and asks each voter if he or she is in favor of the center.

<h2>To find</h2>

the probability of a success for this binomial experiment.

We want to know the probability of a single success for this experiment. therefore,

x=1

As given to us that 56% of the voters support funding the new community center, there, the probability of a person being a supporter is 0.56.

p=0.56

Thus, the probability of a person being a supporter of the new community center is 56% or 0.56.

Learn more about binomial distribution:

https://brainly.in/question/1640230

8 0
2 years ago
(2a+b)^2÷(3b-1) when a= -2 and b=5
WINSTONCH [101]
Evaluate (2 a + b)^2/(3 b - 1) where a = -2 and b = 5:
(2 a + b)^2/(3 b - 1) = (5 - 2×2)^2/(3×5 - 1)

3×5 = 15:
(5 - 2×2)^2/(15 - 1)

 | 1 | 5
- | | 1
 | 1 | 4:
(5 - 2×2)^2/14

2 (-2) = -4:
(-4 + 5)^2/14

5 - 4 = 1:
1^2/14

1^2 = 1:

Answer: 1/14
6 0
3 years ago
Find the area of each geometric figure or product of the polynomial.
Nina [5.8K]
it’s c
Because you do 5n+3 times 5n+3 and you get 25n^2+9
6 0
3 years ago
Need help ASAP. i forgot all the steps after the Area is solved with 5. or if 25pi is the right answer.
maxonik [38]

Answer:

42.5\:\mathrm{m^2}

Step-by-step explanation:

The area of a sector with measure \theta in degrees is given by r^2\pi\cdot\frac{\theta}{360}, where r is the radius of the sector.

What we're given:

  • r of 5
  • \theta of 195^{\circ}

Solving, we get:

A_{sector}=5^2\pi\cdot \frac{195}{360}=13.5416666667\pi=42.5424005174\approx \boxed{42.5\:\mathrm{m^2}}

*Notes:

  • units should be in square meters (area)
  • the problem does not say whether to round or leave answers in term of pi, so you may need to adjust the answer depending on what your teacher specifically wants
7 0
3 years ago
B is the midpoint of AC. What is the length of AB? AB is 9x+7 and BC is -3x+20
ahrayia [7]
<h3>Answer:</h3>

AB = \frac{67}{4}\\

<h3>Step-by-step explanation:</h3>

If B is the midpoint of \overline{AC} then AB is just half of AC and also, BC is just half of AC. This means that AB must be equal to BC. Essentially, 9x +7 = -3x +20 and we can solve for the of x from that equation.

9x +7 = -3x +20 \\ 9x +7 +3x = -3x +20 +3x \\ 12x +7 = 20 \\ 12x +7 -7 = 20 -7 \\ 12x = 13 \\ \frac{12x}{12} = \frac{13}{12} \\ x = \frac{13}{12}

Now we can solve for AB

AB = 9(\frac{13}{12}) +7 \\ AB = 3(\frac{13}{4}) +7 \\ AB = \frac{39}{4} +7 \\ AB = \frac{39}{4} +\frac{28}{4} \\ AB = \frac{67}{4}

8 0
3 years ago
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