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Tatiana [17]
3 years ago
8

The following are quiz scores: 85, 88, 89, 96, 91, 77, 79, 98, 86, 99. What is the standard deviation of the given test scores?

Mathematics
1 answer:
ArbitrLikvidat [17]3 years ago
5 0

Answer:

7.1

Step-by-step explanation:

- Find mean

- For each number you subtract the mean and square the result.

- Work out the mean of those squared differences and find square root of that.

- Hope that helped! Let me know if you need further explanation.

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Brienne and 3 friends bought tickets to the movies. They spent a total of $27.00 on the tickets. Which equation represents this
Sindrei [870]
Hello!

The equation that represents this situation is A. 3t = 27.

Explanation:

This is because an equation is a "mathematical sentence" and this equation says that if you multiply the costs of the three friends' tickets, the total cost would be $27.
5 0
3 years ago
Write &lt; &gt;, or = to<br> make the statement<br> true.<br> 6.208<br> 62.081
umka21 [38]

Answer:

The answer should be 6.208<62.081

Step-by-step explanation:

Because the open side faces the larger value

6 0
3 years ago
One way to build stairs is to attach triangular blocks to an angled support, as shown at the right. If the support makes a 32°
Sauron [17]
Answer: m∠1 = 32°
Step-by-step explanation:
Since we have given that
The angled support making angle with the floor = 32°
So, we need to find the measure of angle 1 so that the steps are parallel to the floor.
As we know that "To make parallel to the floor , there should be alternate interior angle which must be equal."
So, m∠1 = 32° ( the angled support making angle with the floor)
Hence, m∠1 = 32°
5 0
3 years ago
What do 3/4 + (1/4 - 1/6) equal?
Mnenie [13.5K]

Answer:

Step-by-step explanation:

3/4 + (1/4 - 1/6)

= 3/4 +1/4 - 1/6

The LCM = 12

= {(3×3) + (1×3) - (2×1)}/12

= (9+3-2)/12

= 10/12

= 5/6

4 0
3 years ago
Read 2 more answers
Omani drives 66 miles in 1.5 hours
Burka [1]

Answer:

25.6 km/h

Step-by-step explanation:

Omani:

First, 1.5 hours = 1 hour and 30 minutes

and 66 miles = 105.6 km (66 x 1.6 = 105.6)

105.6 / 1.5 = 70.4 km/h

Omani's speed is 70.4 km/h

Adedi:

1 hour and 15 minutes is 1.25 hours

she drives 56 km in 1.25 hours

So 56 / 1.25 = 44.8 km/h

Adedi's speed is 44.8 km/h

Difference:

70.4 - 44.8 = 25.6 km/h

Omani is faster than Adedi with 25.6 km/h

8 0
3 years ago
Read 2 more answers
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