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Shtirlitz [24]
2 years ago
14

Solve 1/3x - 2/7x > 1/3

Mathematics
1 answer:
Ne4ueva [31]2 years ago
6 0

Answer: x > 7

    Step-by-step explanation:

Given:

\displaystyle \frac{1}{3}x- \frac{2}{7}x > \frac{1}{3}

Subtract:

\displaystyle \frac{1}{21}x > \frac{1}{3}

Divide both sides of the equation by \frac{1}{21}:

\displaystyle x > 7

    <u>What does this mean?</u>

This means the x is equal to all values greater than 7.

-> 7.432421, 7.5, 8, 250, etc

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Todd is 30 years old. If his target heart rate during aerobic activity is 60-90 % of his maximum heart rate, how fast should his
sergeinik [125]

Answer:

Step-by-step explanation:

It is given that Todd is 30 year old and he perform aerobic activity that may increase his heart beat.

maximum heart beat can be calculated by subtracting the age from 220

For 30 year old male Maximum heart beat

=220-30=190

And during exercise his heart beat increases to  60-90 % of maximum value

60 % of 190=114 beats/min

90 % of 190=171 beats/min

So Heart beat can goes up to 114 - 171 beats/min

6 0
3 years ago
Four customers at a grocery store are buying apples. The table shows how many pounds of apples each customer bought and how much
malfutka [58]
Answer is C: 14

Explanation:
On the image added, the pounds of apples is half the cost. So if you would keep that same relationship and add $28.00 to one of the costs the outcome would be 14
4 0
2 years ago
A race car is driven around a circular track at a constant speed of 180 miles per hour. If the diameter of the track is 1/2 mile
velikii [3]
F the diameter is 1/2 mile, that is 0.5 mile, then the radius is 0.25 -half of it!

the angular speed is theta/time, which means

 w=theta/time

but another formula for it is Velocity*radians

w=velocity*radians

velocity is 180 mph and radians are (revolution/2 radius), that is:

w=180*(1/2*0.25)
and if we calculate this, we have: w=114.59, which is the correct answer!
8 0
3 years ago
Please help me on the second one. I do not know the answer
Lapatulllka [165]

Answer:

63

Step-by-step explanation:

Just input 3 instead of x, you would get 14(3) + 21 = 63

8 0
2 years ago
Read 2 more answers
Use the following function rule to find g(-w). <br> Simplify your answer.<br> g(b)=-10b+8<br> g(-w)=
4vir4ik [10]

Answer:

10w+8

Step-by-step explanation:

-10(-w)+8

10w+8

4 0
2 years ago
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