Please check answer and help with one of them:
1. check please
car in an accident speed of car is the s, d is length of skid=30 feet
f is coefficient=0.5
use formula to find
s=sqaure root of 30*f*d
My answer is 21.21 because I took square root of 30(0.5)(30)
2. this one is baffling to me-how do I do this one-3 times square root of (x+1) is less than or equal to 7 Please help-Thank you
1. To find the answer for the given formula, we can substitute the given values into the formula and solve:
s = square root(30 * f * d)
Given:
d = 30 feet
f = 0.5
Substituting these values into the formula:
s = square root(30 * 0.5 * 30)
s = square root(450)
s ≈ 21.21
So, your answer of 21.21 is correct.
2. Let's solve the inequality: "3 times square root of (x+1) is less than or equal to 7"
Start by isolating the square root expression:
3 * square root(x + 1) ≤ 7
Next, divide both sides of the inequality by 3 to isolate the square root expression:
square root(x + 1) ≤ 7/3
To eliminate the square root, square both sides of the inequality:
(x + 1) ≤ (7/3)^2
(x + 1) ≤ 49/9
Subtract 1 from both sides to solve for x:
x ≤ 49/9 - 1
x ≤ 49/9 - 9/9
x ≤ 40/9
So, the solution to the inequality is x ≤ 40/9.
Note: Remember to check if the square root expression is defined for the given values of x in the original inequality.