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Sliva [168]
3 years ago
14

A particle moves along a straight line with equation of motion s = f(t), where s is measured in meters and t in seconds. Find th

e velocity and the speed when t = 3. f(t) = 10 + 20 / (t + 1).
Mathematics
1 answer:
kirza4 [7]3 years ago
6 0

Answer:

Step-by-step explanation:Find the slope of the line that passes through the points shown in the table.

The slope of the line that passes through the points in the table is

.

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The actual length of a in the triangle shown is 10 cm. Use the scale drawing of the triangle to find the actual length of side b
mafiozo [28]
The answer is B, 12.5
8 0
3 years ago
Pls help me help me pls ​
grin007 [14]

Answer:

Point B

Step-by-step explanation:

Lines given:

  • y= 2/5x - 1/2
  • y= -1/3x +2/3

x coordinate of intersection of given lines is:

  • 2/5x - 1/2= -1/3x+2/3
  • 2/5x+1/3x= 2/3 +1/2
  • 6/15x+5/15x= 4/6+3/6
  • 11/15x=7/6
  • x= 7*15/11*6
  • x= 35/22

For this value of x, the value of y is:

  • y= 2/5*35/22 - 1/2
  • y=14/22- 1/2
  • y= 3/22

As per graph point (35/22, 3/22) is point B

4 0
3 years ago
Please help Explanation will be appreciated thanks,
Genrish500 [490]

Answer: A; 6.3%

Step-by-step explanation:

Problem 1

For the first problem, we first want to find y so that we can plug it into the expression.

We can use elimination method for the system of equations to solve.

3x+3y=21

3x-y=5

We subtract both equations to eliminate x.

4y=16                                        [divide both sides by 4]

y=4

Now that we know y, we can plug it into the expression.

\frac{4}{2} -3                                         [divide]

2-3                                         [subtract]

-1

We know that the answer is A.

--------------------------------------------------------------------------------------------------------

Problem 2

For the second problem, we need to know how to calculate percent error. The formula for precent error is \frac{|measured-exact|}{exact} *100%. We know that the exact value is 80 because the buyer was supposed to given 80. 75 is the measured value because that was what the buyer was given.

\frac{|75-80|}{80} *100%                               [subtract]

\frac{|-5|}{80} *100%                                   [solve absolue value]

\frac{5}{80} *100%                                     [divide]

0.0625*100%                               [multiply]

6.25

Since the problem said to round to one decimal place, we know that the answer is 6.3%.

4 0
2 years ago
Pls answer given from the graph for 50 points!
Norma-Jean [14]

Answer:

Step-by-step explanation:

a.  The older one is, the higher their salary, with a couple of rare exceptions.

b.  See attached figure

c.  Salary of L60,000/year.

d.  Age of 35 to earn L40,000/yr

5 0
2 years ago
0.234+2.07 hurrry plz
andreyandreev [35.5K]

Answer:

2.304

Step-by-step explanation:

Add 0.234 and 2.07 left to right with 0.234 on the top and 2.07 on the bottom.

8 0
2 years ago
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