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Sladkaya [172]
3 years ago
8

6th grade math help me please with both :))

Mathematics
2 answers:
lakkis [162]3 years ago
3 0

Answer:

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ratelena [41]3 years ago
3 0

Answer: Ms. Cortes shuld buy the 32 ounce package because it costs $0.10, compared to $0.11 for the 24 ounces.  So the bigger bottle costs less money per ounce.

Step-by-step explanation:price divided by weight will give you the per ounce price.

$3.29/32 = $0.10 per ounce (rounded)

$2.75/24 = $0.11 per ounce (rounded)

You might be interested in
Evaluate using the order of operation 3/4+5/6÷2/3
mel-nik [20]

Answer:

two  2

Step-by-step explanation:

First you divide the five over six into the two over three, then you add the quotient of that problem to three over four and the sum is your answer.  

3 0
3 years ago
Production of a gas flow meter takes place in two distinct operations. Measurements (n = 15) of the time required for the first
Karolina [17]

Answer:

a) P(a > 80) = 0.323

b) The 95% confidence interval = (73.40, 80.60)

c) The 95% confidence interval expresses that the mean of the distribution can always be found in the given range, with a 95% confidence level.

Step-by-step explanation:

X ~ (45, 4)

Y ~ (32, 2.5)

(X+Y) ~ (77, 6.5)

Let a = (X+Y)

a) Probability that the time required to complete both of those steps will exceed 80 min = P(a > 80)

This is a normal distribution problem

We then standardize 80 min time

The standardized score for any value is the value minus the mean then divided by the standard deviation.

z = (a - μ)/σ = (80 - 77)/6.5 = 0.46

To determine the probability the time required to complete both of those steps will exceed 80 min = P(a > 80) = P(z > 0.46)

We'll use data from the normal probability table for these probabilities

P(a > 80) = P(z > 0.46) = 1 - P(z ≤ 0.46) = 1 - 0.677 = 0.323

b) 95% confidence interval for the expected total time required to produce one flow meter.

We need to obtain the margin of error

Margin of error = (critical value) × (standard error of the sample)

Critical value for a 95% confidence interval = critical value for a significance level of 5% = t(15-1, 0.05/2) = 2.145 (using the t-score since information on the population mean and standard deviation isn't known)

Standard error for the sample of sum of times = (standard deviation of the sum of times)/√n = (6.5/√15) = 1.678

Margin of error = 2.145 × 1.678 = 3.60

Limits of the confidence interval = (Sample mean ± margin of error)

Lower limit of the confidence interval = (Sample mean - margin of error) = 77 - 3.60 = 73.40

Upper limit of the confidence interval = 77 + 3.60 = 80.60

The confidence interval = (73.40, 80.60)

4 0
3 years ago
2) university theater sold 556 tickets for a play. tickets cost $22 per adultand $12 per senior citizen. if total receipts were
harina [27]
About 708 or 707.6666666667
7 0
3 years ago
The area of a rectangle is 36 square centimeters and its length is 9 centimeters
Andrei [34K]
A) 4 cm
B) 9 cm x 12 cm
C) 108 cm
8 0
3 years ago
A survey found that 12 out of every 15 people in the united States prefer eating at a restaurant over cooking at home. if 400 pe
I am Lyosha [343]
500 people took the survey.

12 out of 15 people is 80% of the population.  12/15 = 0.80
Thus, 80% of the population prefers eating in the restaurant.
 
If 400 represents the people who prefers eating in the restaurant; then, 400 is the 80% of the population. To get the total population or 100%, we must divide 400 by 0.80 or 80%

400 / 0.80 = 500 people.

Out of the 500 people, 400 selected eating in the restaurant while the remaining 20% of the population or 100 people selected cooking at home.
4 0
3 years ago
Read 2 more answers
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