Use cosine (let x = angle): cos (x) = 3/12 Solve for x.
1. Yep 2. The more complete set would be A. 3. Yep 4. It's actually D. Note that to say that a number is divisible by 9, the sum of the digits should be divisible by 9. Here, 5229 : 5+2+2+9 = 18, and 18 is divisible by 9. Hope this helps :3
A & B are correct. In C, the (-) sign should be (+) because 12 minus 9 is positive 3. In D, combine the constants: 8 + 6d - 12 = 6d - 4 In E, combine the terms with variables: 30e + 18 - 8e = 22e + 18 In F, 15f + 10 - f - 5 = 14f + 5 hope this helps :3
Use the pythagorean theorem: c^2 = a^2 + b^2 where c = hypotenuse a = one leg b = the other leg In the problem, a = 9 b = 12 Now solve for c using the equation above.
If a point is reflected over the y-axis, the y-coordinate of the new point is equal to the original, while the x-coordinate is the negative of the original. Therefore, if the point is (8, -10), the reflected point is at (-8, -10). Hope this helps :3
The conversion is 1 yard = 3 feet. Thus, 1 yd^3 = 3^3 ft^3 or 27 ft^3 If there are 3 yards, 3 yd^3 = 3 * 27 ft^3 = 81 ft^3 You're correct. :)
Recall that are of triangle is just A = (1/2)bh where b = base h = height It was said that the base is half of the height, or b = (1/2)h. Substituting to the formula, A = (1/2)(1/2)h*h 121 = (1/4)*h^2 484 = h^2 h = 22 m Solving for the base, b = (1/2)*22 = 11 m Hope this helps...
It's wrong, I don't know how you checked but x = 32 and y = 6 actually doesn't satisfy either given equation. Anyway, okay let's do #2. -1/2x - 1/4y = 3 1/3x + 1/6y = 2 To deal with fractions, it's easier if you first make them whole numbers by multiplying ...
#1. -x + 10y = 60 -4x + 16y = 32 If we need to use the substitution method, we choose an equation and let one of the variable in terms of the other. Then we substitute it to the other equation. Here, let's choose the first equation. -x + 10y = 60 Then let's choose the ...
math (please help)
#1. Note that horizontal line has a zero slope, and in the form y = c, where c is a any real number. Therefore, if it passes thru the point (-8,8), the equation must be y = 8. #2. If we are given the two points on the line, we first get the slope using the formula m = (y2 - y1...