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KonstantinChe [14]
4 years ago
10

Need help with this questions

Mathematics
1 answer:
leva [86]4 years ago
4 0
1. Total
2. Deficit
( hope this helps)
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At 3:00 p.m., Jamie leaves her house and drives north to the beach. She arrives at 5:30 p.m. Also leaving at 3:00 p.m., her brot
marshall27 [118]
Time spent 4 hours (240 minutes) from point A (state park) to point B (beach)
Distance from A to B is 240 mi.
240mi/4hours = 60 miles/hour
4 0
4 years ago
Bryan is observing the velocity of a cyclist at different times. After four hours, the velocity of the cyclist is 15 km/h. After
myrzilka [38]

Part A.

What we can do to solve this problem is to assume that the acceleration of Bryan is constant so that the velocity function is linear. The standard form of a linear function is in the form:

y = m x + b

or in this case:

v = m t + b

where v is velocity and t is time, b is the y –intercept of the equation

The slope m can be calculated by:

m = (v2 – v1) / (t2 – t1)

m = (12 – 15) / (7 – 4)

m = -1

Since slope is negative therefore this means the cyclist are constantly decelerating. The equation then becomes:

v = - t + b

Now finding for b by plugging in any data pair:

15 = - (4) + b

b = 19

So the complete equation is:

v = - t + 19

This means that the initial velocity of the cyclists at t = 0 is 19 km / h.

 

Part B. What we can do to graph the equation is to calculate for the values of v from t = 0 to 12, then plot all these values in the Cartesian plane then connect the dots.

6 0
4 years ago
What is the length of an arc cut off by an angle of 1.5 radians on a circle of radius 8 inches?
Natali [406]

To solve this problem, we should first recall that the circumference is the measure of the total arc enclosing the circle. The formula for circumference is:

Circumference = 2 π r

where r is the radius of the circle

 

Now since we are only looking for a fraction of the arc, not the total arc, therefore this simply means we are finding for a portion of the circumference. Now we use the formula:

Arc length = (θ / 360) * 2 π r

Where θ/360 represents how much of the fraction is the arc

 

Convert angle to degrees: θ = 1.5 rad (180° / π rad) = (270/π)°

 

Therefore the arc length is:

Arc length = (270/π / 360) * 2 π (8 inches)

Arc length = 12 inches

5 0
3 years ago
Question on picture. Please help
Elden [556K]
A rhombus is quadrilateral where all 4 sides are of equal length. Thus


5x + 2 = 2x + 12

3x = 10

x = 10/3

substituting x into either expression, yields

56/3

therefore side AB = 56/3


3 0
4 years ago
Joanna is driving 185 miles to visit her family. She drives 68 miles in the morning, stops for lunch, and then drives the rest o
blondinia [14]

Answer:

I believe the answer is A. m + 68 = 185; m = 117

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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