Answer:
u ≈ 5.7
Step-by-step explanation:
Using the Sine rule in Δ TUV, that is
= 
, substitute values
= 
( cross- multiply )
u × sin26° = 2.5 × sin85° ( divide both sides by sin26° )
u = 
≈ 5.7 ( to 1 dec. place )
Answer: 31.25 cm^2
Step by Step Explination: I just went onto Google and typed in "surface area of a pyramid formula," and then entered the given values, and the given length and width are equal.
Hope this helps!
Answer:
-12y + 48 !
Step-by-step explanation:
hope this helps :))
Answer:
Step-by-step explanation:
Unless we set x^2 + 8x + 15 equal to zero, we don't have an equation to be solved. I will assume that the problem is actually x^2 + 8x + 15 = 0.
The coefficients of this quadratic are {1, 8, 15}, and so the "discriminant" b^2 - 4ac is (8)^2 - 4(1)(15), or 4. Because the discriminant is positive, we know that there are two real, unequal roots.
Continuing with the quadratic formula and knowing that the discriminant is 4, we get:
-8 ± √4 -8 ± 2
x = ---------------- = --------------- , or x = -2 ± 1: x = -3 and x = -5
2 2
8 1/2% of 4300 is 365.5
7 1/4% of 8200 is 594.5
9.2% of 3600 is 331.2
