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Anettt [7]
3 years ago
6

Solve for the following equation. 7=r^1/2 please help

Mathematics
1 answer:
Andreas93 [3]3 years ago
6 0
7 = r^1/2 is the same as saying 7 = square root of r. So, to get rid of the square root sign on the r, you need to square it, and when you do something to one side of the equation, you have to do the same to the other side. So after squaring both sides, you get 49 = r.
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the hoover dam is 725 feet tall. how long would it take an object to fall from the top to the base of the dam? round the answer
Alinara [238K]

Answer:

45.05 seconds

Step-by-step explanation:

Use the formula: d = vi t + \frac{1}{2} at^{2}

d = distance      vi = initial velocity (m/s)    

t = time (s)     a = acceleration (m/s^{2})

m is meters and s is seconds. They are units of measurement so leave them be.

Assuming the object is simply dropped, the initial velocity is 0 since the object was not moving before it was dropped.

The distance is 725 feet, which is 220.98 meters.

The acceleration is 9.81m/s^{2} since that is the acceleration of Earth's gravity, aka free fall.

Time is what we are trying to find so just leave it as the variable t.

So plug the values into the equation:

220.98m = (0)(t) + \frac{1}{2} (9.81m/s^{2})(t)

220.98m = (4.905m/s^{2})(t)

45.0519877676s = t

t = 45.05s

Remember to pay attention to units because your answer will be wrong otherwise

7 0
2 years ago
Together, Kyle and Tyler traveled 425 miles to the beach. If Kyle traveled 240 miles, how far did Tyler travel? A) 2x = 425 B) x
Snezhnost [94]

Answer:

the answer is x=185

Step-by-step explanation:

x+240=425

 -240  -240

x= 185

3 0
3 years ago
Read 2 more answers
Can someone explain 15-20? I really need help and it's due tomorrow. Thank you in advance!
zubka84 [21]
15-20 is -5. If you put 15 on a number line and go back twenty spaces you land on -5 hope this helps.
7 0
3 years ago
Read 2 more answers
Which of the following equations could be used to find the value of 3,550 ÷ 25?
fiasKO [112]

Answer:

<em>A is correct answer</em>

Step-by-step explanation:

(3000 + 500 + 50) \div 25 \\

(3550) \div 25

=  =  > 3550 \div 25

Thanks

Don't forget to tell the name of your country.

8 0
2 years ago
How many times can 56 go into 984
dybincka [34]

17 times evenly, all you have to do is divide 984 by 56 to get your answer.

5 0
3 years ago
Read 2 more answers
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