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1 year ago

The dot plots below show the scores for a group of students for two rounds of a quiz:

Mathematics

1 answer:

matrenka [14]1 year ago

3 0

Answer: A. The range of each round is the same.

Step-by-step explanation:

Below shows the total score for both rounds. As you can see the totals for both rounds are very close so their range is most likely the same.

Round 1

(2 x 2) + (3 x 3) + (4 x 2) + 5 = 26

4 9 8

Round 2

(3 x 2) + (4 x 3) + (5 x 2) + 2 = 30
6 12 10

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2 years ago

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3 years ago

Mary tutors english. For each hour that she tutors she earns 40 dollars. Let E be her earnings (in dollars) after tutoring for H

AleksAgata [21]

Answer:

A.) 40(t) = E

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Step-by-step explanation:

t is for time, E is the total, H is the hourly rate.

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2 years ago

The volume of the prism shown is 72. in3

Vesna [10]

Answer:

24 in³

Step-by-step explanation:

The volume of a prism is given by the formula ...

V = Bh

where B is the area of the base, and h is the height.

The volume of a pyramid is given by the formula ...

V = (1/3)Bh

where B and h have the same definitions.

For a pyramid with the same B and h as a prism, the volume is 1/3 that of the prism:

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2 years ago

An airplane travels 290 km between Austin and Dallas in 1 h 15 min. What is it’s average speed?

aniked [119]

The average speed of the plane between Austin and Dallas is 232 kmph

Solution:

Given that,

Total distance traveled by airplane = 290 km

Time taken for travel between Austin and Dallas = 1 hour 15 minute

Let us convert the time taken to hours

$\begin{array}{l}{1 \text { minute }=\frac{1}{60} \text { hours }} \\\\ {15 \text { minutes }=\frac{15}{60}=\frac{1}{4}} \\\\ {\text { 1 hour } 15 \text { minutes }=1 \frac{1}{4} \text { hours }=\frac{1 \times 4+1}{4}=\frac{5}{4} \text { hours }}\end{array}$

The average speed is given as:

$\text { Average speed }=\frac{\text { total distance }}{\text { total time taken }}$

Plugging in the values, we get,

$\text { Average speed }=\frac{290}{\frac{5}{4}}=\frac{290}{5} \times 4=232$

Hence the average speed is 232 kmph

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3 years ago