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adelina 88 [10]
3 years ago
13

Beth is selling tickets for a dinner at her school.

Mathematics
2 answers:
iren [92.7K]3 years ago
5 0

Answer:

D

Step-by-step explanation:

check each child answer and multiply by 4.50

check each adult answer and multiply by 6.00

add both answers up

and see which one it is

its not A, B, or C

Makovka662 [10]3 years ago
5 0

Answer:

D

Step-by-step explanation:

x-number of children's tickets sold

y-number of adult's tickets sold

x+y=520=>x=520-y

4.5x+6y=2 707.5

45x+60y=27 075

45(520-y)+60y=27 705

15y+23 400=27 705

15y=3 675

y=245=>x=520-y=520-245=275

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A survey reported in Time magazine included the question ‘‘Do you favor a federal law requiring a 15 day waiting period to purch
galben [10]

Answer:

Step-by-step explanation:

Confidence interval for the difference in the two proportions is written as

Difference in sample proportions ± margin of error

Sample proportion, p= x/n

Where x = number of success

n = number of samples

For the men,

x = 318

n1 = 520

p1 = 318/520 = 0.61

For the women

x = 379

n2 = 460

p2 = 379/460 = 0.82

Margin of error = z√[p1(1 - p1)/n1 + p2(1 - p2)/n2]

To determine the z score, we subtract the confidence level from 100% to get α

α = 1 - 0.95 = 0.05

α/2 = 0.05/2 = 0.025

This is the area in each tail. Since we want the area in the middle, it becomes

1 - 0.025 = 0.975

The z score corresponding to the area on the z table is 1.96. Thus, confidence level of 95% is 1.96

Margin of error = 1.96 × √[0.61(1 - 0.61)/520 + 0.82(1 - 0.82)/460]

= 1.96 × √0.0004575 + 0.00032086957)

= 0.055

Confidence interval = 0.61 - 0.82 ± 0.055

= - 0.21 ± 0.055

3 0
2 years ago
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Nat2105 [25]
Vertical angles congruence theorem, then SAS
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3 years ago
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Doss [256]
The answer is bbc or if that’s not the answer the then it’s bbl THANK ME LATERRRR
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2 years ago
The sum of 3 times the value of x and 2 is equal to four less than five times the value of x. Which equation can be used to find
bonufazy [111]

The question has omitted  options but i will solve, so you will just check my answer from the options you have.

Answer: The equation  to find the value of x = 3x+ 2= 5x-4

The value of x= 3

Step-by-step explanation:

Step 1

The sum of 3 times the value of x and 2 is equal to four less than five times the value of x can be expressed as

3x+ 2= 5x-4

Step 2

Solving this equation  to find the value of x , we have that

3x+ 2= 5x-4

3x-5x= -4-2

-2x= -6

x= -6/-2

x=3

5 0
3 years ago
The endpoints of the diameter of a circle are (-12, 7) and (3, 15). What is the length of the diameter?
seraphim [82]

Answer: 17

Step-by-step explanation:

17

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2 years ago
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