ShmoopTube

Where Monty Python meets your 10th grade teacher.

Search Thousands of Shmoop Videos


SAT Math Videos 355 videos

SAT Math 2.1 Geometry and Measurement
2779 Views

SAT Math 2.1 Geometry and Measurement. What is the measure of angle z in terms of x and y?

SAT Math 9.4 Algebra and Functions
1300 Views

SAT Math 9.4 Algebra and Functions

SAT Math 9.2 Algebra and Functions
377 Views

SAT Math 9.2 Algebra and Functions

See All

SAT Math: Using Time and Distance to Calculate Speed 14 Views


Share It!


Description:

Liz leaves her home to drive on a straight highway that leads directly across town for a job interview. At 8:00 a.m., she has driven 5 miles from her house. At 9:15 a.m., she is 30 miles from her house. What is her average speed in miles per hour?


Transcript

00:03

Okay shmoop er's follow on for the previous math question

00:06

That was number four here Question is if this keeps

00:09

writing her current average feeling seeing road how far away

00:11

would he be from her house at noon Ok so

00:13

this camps on tio fourth one here which is well

00:17

just go home and wait for Job infinity and 5

00:20

miles per hour at nine Fifteen she's thirty miles around

00:22

their speed in miles an hour when we figured out

00:23

that was twenty So to get the answer for five

00:27

here what do we do Well if liz has been

00:29

driving since eight a m and she's been driving for

00:33

four hours already also at eight a M she was

00:36

five miles from her house So you just add that

00:39

number to the very end Right So we figured out

00:42

earlier question she was going twenty miles an hour You

00:45

want four hours That's eighty miles She was started out

00:47

at five miles away So we got eighty plus five

00:50

and that gets her eighty five miles from her house

00:52

And wow she really can go the distance And the

00:54

key thing here on these questions is if you miss

00:57

The first one If you missed number four you're also

01:00

going to miss number five So you gotta pay super

01:03

careful attention to with all this stuff So good luck 00:01:05.863 --> [endTime] out there

Related Videos

SAT Math 1.1 Algebra and Functions
315 Views

SAT Math 1.1 Algebra and Functions. Find an algebraic equation to correspond with the data.

SAT Math 1.1 Geometry and Measurement
719 Views

SAT Math 1.1 Geometry and Measurement. What is the circumference of the circle?

SAT Math 1.1 Numbers and Operations
280 Views

SAT Math 1.1 Numbers and Operations. How many combinations of beverage and cereal can be made?

SAT Math 1.1 Statistics and Probability
289 Views

SAT Math 1.1 Statistics and Probability. In which of the following data sets are the arithmetic mean and the median equal?

SAT Math 1.2 Algebra and Functions
359 Views

SAT Math: Algebra and Functions Drill 1, Problem 2. Based on the data in the table, what is the maximum heart rate for the average 22-year-old?