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defon
2 years ago
8

Help pls get it right bc Thais is a test

Mathematics
1 answer:
Reil [10]2 years ago
4 0

Answer:

$0.11

Step-by-step explanation:

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Is y=4x+3 and 4x+y=3 parallel or perpendicular or neither?
Sedbober [7]
Neither of the equations are parallel or perpendicular
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3 years ago
The yearbook committee polled 80 randomly selected students from a class of 320 ninth graders to see if they would be willing to
jek_recluse [69]

Answer:

The margin of error is given below:

E=z \times \sqrt{\frac{\hat{p}(1-\hat{p}}{n} }

Where:

\hat{p}=\frac{26}{80}=0.325

\therefore E = z \times \sqrt{\frac{0.325(1-0.325}{80} }

                           =z \times 0.0523659

Therefore, the option E = z*6% is correct as it closest to the given answer

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2 years ago
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Suppose that 80% of all registered California voters favor banning the release of information from exit polls in presidential el
natulia [17]

Answer:

a. Mean = 20

Sd = 4

b. Probability of X = 20 = 0.1960

Step-by-step explanation:

we have

n = 25

p = 80% = 0.8

mean = np

= 0.8 * 25

= 20

standard deviation = √np(1-p)

= √25*0.8(1-0.8)

=√4

= 2

probability that exactly 20 favours ban

it follows a binomial distribution

= 25C20 × 0.8²⁰ × 0.2⁵

= 53130 × 0.01153 × 0.00032

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Probability of X = 20 = 0.1960

6 0
3 years ago
Jane has 10 days to study for four
sammy [17]
10x3=30 hours
30/4= 7.5 hours to study for each exam
5 0
2 years ago
A cafe offers senior citizens a 15% discount off its regular price of 8.95 for the dinner buffet. How much of a discounts doesn’
ser-zykov [4K]

Multiply the cost of the meal by 0.15 ( 15% as a decimal).

8.95 x 0.15 = 1.34

The amount of the discount would be $1.34

Extra:

If you need to find out how much a senior citizen pays, you would subtract the amount of the discount from the original price:

8.95 - 1.34 = $7.61

6 0
3 years ago
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