Answer:
1. 24,000,000, i believe you divide, 300,000/80.
2. 4.065 seconds, i also believe you divide 5000m/1230.
To calculate distance between two points we use the distance formula sqrt((x2−x1)^2+(y2−y1)^2).
To start, we find the square of the distance between x1 and x2 and y1 and y2. The distance between x1 and x2, or 1 and 3, is 2. The distance between y1 and y2, or 3 and -4, is 7.
Now we square 2 and 7 and add them together to get 4 + 49 = 53.
The last thing we do to find the distance is take the square root of 53. 53 is not a perfect square and is also a prime number so our answer in simplest form is still sqrt53.<span />
Please refer to my attachments for visual guidelines.
We are going to solve your problem by using the pythagorean theorem, a^2+b^2 = c^2, where a and b are the legs of the triangle, and c is the hypotenuse (the longest side).
The length of the ladder is equal to 70ft (hypotenuse); one leg is the distance between the wall and the bottom of the ladder - 40 ft, the other leg is unknown for it is the distance between 10 ft above the ground and the top of the ladder-represented by "x". Using pythagorean theorem, a^2+b^=c^2, we have x^2+40^2 = 70^2. Solving the exponents, we have x^2 + 1600 = 4900.
Isolating the variable x, we have x^2 = 4900-1600. Futher simplying, x^2 = 3300. Thus, x = √
3300 or 57.4456264654 ft.
Adding 10 ft to x, therefore, the top of the leadder is 67.4456264654 ft off the ground.
Answer:
None
Step-by-step explanation:
For option A
3-2r/4=10 and combining like terms and re-arranging we obtain
-2r/4=10-3
-2r/4=7
r=7*4/-2=-14
For option B
3/4-2r=10 then combining like terms and re-arranging
-2r=10-3/4
-2r=9 1/4
r=(9 1/4)/-2=-4.625
For option C
3(r-4)=10 dividing both sides by three first
r-4=10/3
r=10/3+4= 7 1/3
For option D
3-r/4=10
-r/4=10-3
-r/4=7
r=7*-4=-28
Therefore, none of the options yields r=-17
7n-8=6 add 8 to both sides 6+8=14 rewrite 7n=14 divide 7 from both sides 14/7=2 n=2 hope this helps have a nice day