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s2008m [1.1K]
3 years ago
9

I really need help on these please give me the answers.

Mathematics
1 answer:
vodomira [7]3 years ago
3 0
I believe you should do as much work as you can on each of these problems and only then ask for help.  You'll almost always learn more by becoming involved in the thinking and problem solving you encounter here.

|x| + 5 = 13  reduces to   |x| = 13, so x could be either -13 or +13.
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A car drives with an average velocity of 20.1 m/s . After some time, it has traveled 34.2 km. How long has the car been travelin
exis [7]

Answer:

time = distance / velocity

time = 34,200 meters / 20.1 meters per second

time = 1,701.4925373134 seconds

time = 28.36 minutes

 

Step-by-step explanation:

3 0
3 years ago
Usain Bolt of Jamaica set a world record in 2009 for the 200- meter dash with a time of 19.19 seconds. What was his average spee
kirill [66]

Answer:

His average speed was of 10.42 m/s

Step-by-step explanation:

We use the following relation to solve this question:

v = \frac{d}{t}

In which v is the velocity(in m/s), d is the distance(in meters), and t is the time, in seconds.

Usain Bolt of Jamaica set a world record in 2009 for the 200- meter dash with a time of 19.19 seconds.

This means that d = 200, t = 19.19

So his average speed was of:

v = \frac{d}{t} = \frac{200}{19.19} = 10.42

His average speed was of 10.42 m/s

6 0
3 years ago
What is the intercept for the graph of this line? 5x -3y =11​
MatroZZZ [7]

Step-by-step explanation:

5x-3y=11\\\\x-intercept\ is\ for\ y=0\\\\5x-3(0)=11\\5x-0=11\\5x=11\qquad\text{divide both sides by 5}\\x=\dfrac{11}{5}\\\\y-intercept\ is\ for\ x=0\\\\5(0)-3y=11\\0-3y=11\\-3y=11\qquad\text{divide both sides by (-3)}\\y=-\dfrac{11}{3}

3 0
3 years ago
For his long-distance phone service, Jim pays a $3 monthly fee plus 11 cents per minute. Last month, Jim's long-distance bill wa
Ymorist [56]

Answer:

168

Step-by-step explanation:

3 + .11x = 21.48

.11x = 18.48

x = 168

7 0
3 years ago
Michael buys a basket of mangoes on sale for $4 before tax. ​ ​The sales tax is 12% . ​ ​What is the total price Michael pays fo
expeople1 [14]

Answer:

4.48

Step-by-step explanation:

4.00 + 12%(.48)= 4.48

4 0
3 years ago
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