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3 years ago

Write a real world problem than can be solved using elapsed time. Include the solution and show your work

1 answer:

6 0

Don't know if this is what you're looking for but here. Hope it helps.
Sara woke up at 9:00. She has dance practice at noon(12:00) it ends at 2:15. She has to meet her friend Jerry for pizza at 5:30. How much time does she have before dance, at dance, and from dance to dinner?

Kind of hard to follow but first take 9:00 to 12:00. 12-9=3 so 3 hours before dance. Next how long dance is. To get from 12:00 to 2:00 you need 2 hours. to get from 2:00 to 2:15 is 15 minutes. So dance is 2 hours and 15 minutes. After dance until dinner is going to be 2:15 to 5:30. To get to 2:00 to 5:00 is three hours. You need 15 minutes from 15 to 30. So She has 3 hours and 15 minutes from dance to dinner.

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67. The line contains the point (4,0) and is parallel to the line defined by 3x = 2y.

olganol [36]

Answer:

$y=\frac{3}{2} x-6$

Step-by-step explanation:

Hi there!

What we need to know:

Linear equations are typically organized in slope-intercept form:

$y=mx+b$ where m is the slope of the line and b is the y-intercept (the value of y when the line crosses the y-axis)

Parallel lines will always have the same slope but different y-intercepts.

1) Determine the slope of the parallel line

Organize 3x = 2y into slope-intercept form. Why? So we can easily identify the slope, m.

$3x = 2y$

Switch the sides

$2y=3x$

Divide both sides by 2 to isolate y

$\frac{2y}{2} = \frac{3}{2} x\\y=\frac{3}{2} x$

Now that this equation is in slope-intercept form, we can easily identify that $\frac{3}{2}$ is in the place of m. Therefore, because parallel lines have the same slope, the parallel line we're solving for now will also have the slope $\frac{3}{2}$ . Plug this into $y=mx+b$ :

$y=\frac{3}{2} x+b$

2) Determine the y-intercept

$y=\frac{3}{2} x+b$

Plug in the given point, (4,0)

$0=\frac{3}{2} (4)+b\\0=6+b$

Subtract both sides by 6

$0-6=6+b-6\\-6=b$

Therefore, -6 is the y-intercept of the line. Plug this into $y=\frac{3}{2} x+b$ as b:

$y=\frac{3}{2} x-6$

I hope this helps!

7 0

3 years ago

A circle has a circumference of 9 pi meters what is the area of this circle

Andreas93 [3]

Answer: 63.62 square m.

Step-by-step explanation:

Find the Radius so 9/2= 4.5

Area = π r²

Area 3.14(20.25)

Area equles 63.62

8 0

3 years ago

Which number is equivalent to 4/5?

galben [10]

The answer is D . (0.8)

3 0

3 years ago

Read 2 more answers

What is 3 1/3 *2/3?

Molodets [167]

Answer:2 2/9

Step-by-step explanation:

3 1/3= 10/3, 10/3 x 2/3= 20/9= 2 2/9

6 0

3 years ago

Read 2 more answers

In circle A below, chord BC and diameter DAE intersect at F. If arc CD = 46° and arc BE = 78°, what is m_BFE? D B А

wel

Given:

Consider the below figure attached with this question.

In circle A below, chord BC and diameter DAE intersect at F.

The arc CD = 46° and arc BE = 78°.

To find:

The measure of angle BFE.

Solution:

According to intersecting chords theorem, if two chords intersect inside the circle then the angle on the intersection is the average of intercepted arcs.

Using intersecting chords theorem, we get

$m\angle BFE=\dfrac{1}{2}(m(arcCD)+m(arcBE))$

$m\angle BFE=\dfrac{1}{2}(46^\circ+78^\circ)$

$m\angle BFE=\dfrac{1}{2}(124^\circ)$

$m\angle BFE=62^\circ$

Therefore, the measure of angle BFE is 62°.

6 0

3 years ago