2 of them
7 can be made by 4+3 2+5 1+6
3 1+2 3+0
First you get the length PX
secondly you use the sine rule a\sin A= b\sin B=c\sin C
hence hy = 30
you take 30\sin 90=18\X
cross multiply
sin 90 × 18 = 30×X
sin 90 = 1
1×18=30X
18\30=30X\30
0.6=X
then sin~1 0.6
answer 36.8699 as angle p
then get cos 36.8699
10
x.25<------ 2 decimals
_____
50
+200
______
250<----move the decimal 2 times to the right
the answer is 2.5
9514 1404 393
Answer:
- (x +1)² = 4
- (D) x = -1 ±2
Step-by-step explanation:
Start by getting the x-terms on one side of the equal sign. We can do that by subtracting x from both sides.
3 = x² +2x
Now, add the square of half the x-coefficient.
3 +1 = x² +2x +1
(x +1)² = 4 . . . . . . . . write as a square in the desired form
__
To solve, take the square root, and add the opposite of the left-side constant.
x +1 = ±2
x = -1 ±2 . . . . . . matches choice (D)
Answer:
(-12, 12) D
Step-by-step explanation:
Substitute y = 12 into the first equation:-
12 = -3/4x + 3
-3/4 x = 12 - 3 = 9
x = 9 * -4/3
= -12
so the answer is (-12, 12)