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hichkok12 [17]
1 year ago
7

The temperature was -20.5°F at 5 A.M. and rose 5 degrees per hour for the next 5 hours. Melissa says the temperature at 10 A.M.

was -5.5°F. Which statement identifies Melissa’s error and the correct answer?
Mathematics
1 answer:
Natali5045456 [20]1 year ago
6 0
It would be 1.5 degrees in 5 hours
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A new car is purchased for 16500 dollars. The value of the car depreciates at 5.75% per year. What will the value of the car be,
kirill115 [55]
A=16500(1-0.0575)^5
A=16,500×(1−0.0575)^(5)
A=12,271.30
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Margo has 15 pounds of clay, Tim has 10 pounds of clay, Tray has 13 pounds of clay, Lila has 14 pounds of clay, and Jerry has 13
weqwewe [10]
Add all the clay together and divide it by 5 so the answer is 13
4 0
2 years ago
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In a normally distributed data set a mean of 55 where 95% of the data fall between 47.4 and 62.6, what would be the standard dev
tresset_1 [31]

Answer:

The standard deviation of that data set is 3.8

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean = 55

95% of the data fall between 47.4 and 62.6. This means that 47.4 is 2 standard deviations below the mean and 62.6 is two standard deviations above the mean.

Using one of these points.

55 + 2sd = 62.6

2sd = 7.6

sd = 7.6/2

sd = 3.8

The standard deviation of that data set is 3.8

6 0
1 year ago
2. In the product of (4a3 + 5a2 – 11a) and (-15 + 3a – 7a2), the co-efficient of a4 is …………………… .
vekshin1

Answer:

- 23

Step-by-step explanation:

We could do this the long way and expand the whole product or note that the a^{4} terms arise from the product of the a³ and a terms and the product of the a² and a² terms, that is

4a³ × 3a = 12a^{4}

+ 5a² × - 7a² = - 35a^{4}

Summing gives

12a^{4} - 35a^{4} = - 23a^{4}

with coefficient - 23

5 0
2 years ago
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Angles BAE and FAC are straight angles. What angle relationship best describes angles BAC and DAC?
vova2212 [387]

Answer:

They are adjacent angles

Step-by-step explanation:

3 0
2 years ago
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