1/2x -9, you take half of x so multiply 1/2 times x then you subtract the 9 after due to PEMDAS ( parentheses, exponents, multiplication & division, Add & Subtract) you follow the order of operation starting with Parentheses and ending with adding or subtracting
The answer to number one is 276
Step 1: subtract
156 - 18 = 138
Step 2: multiply
138 x 2 = 276
Step 3: Your Answer
276
Bill has 145 air planes
Dave has 145 air planes
Jack has 138 air planes
Answer:
1. 12x - 6
2. -2x + 17
Step-by-step explanation:
1.
- 8x - 2(3 - 2x)
- 8x - (-2)(3) + (-2)(-2x)
- 8x + (-6) + 4x
- (8x + 4x) + (-6)
- 12x - 6
2.
- 4x + 5 + (-3)(2x) + (-3)(-4)
- 4x + 5 - 6x + 12
- (4x - 6x) + (5 + 12)
- -2x + 17
It's the third answer. This is because since there is no middle term where both variables are combined, that would lead to the signs of the 2 factors to be different. However, that still leaves 2 answers, 3 and 2. If we were to square i, you would get -1. This is because √-1 is equal to i. i^2 would be -1. Since the sign in the unfactored expression is positive and not negative, that would mean that the i in the factoring turned it around. that leads us to believe that answer 3 is the correct answer.
Answer:
6.04 kilometers
Step-by-step explanation:
First, by AA triangle similarity theorem, we know that the two triangles are equal.
So, we can set up a ratio
3,500/2000=4200/x
cross multiplying, we get
3500x=4200*2000
and simplifying, we get x=2400
the distance will be 2,400+4,200=6600 yards
converting to kilometers,
6600*0.0009144=6.04