I would say 8:00 between 6:00 and 10:00 cause it seems to be progressing in increments of 2 hours
To find the 2 significant figures:
A. 45
Since, there are two non zeros 4 and 5.
Therefore, this has 2 significant figures.
B. 90
Since, it has only one non zero digit 9.
Therefore, it has not 2 significant figures.
C. 180
Since, there are two non zeros 1 and 8.
Therefore, this has 2 significant figures.
D. 22.5
Since, there are three non zeros 2, 2 and 8.
Therefore, this has not 2 significant figures.
Hence, the correct options are A and C.
Answer:
1. 4
2. -4
3. -4
Step-by-step explanation:
Let's look carefully at each problem and explain it.
1. (-2)^2
This means find the square of the number -2. Since the square of a number means multiplying the number by itself, then
(-2)^2 means the product (-2) * (-2),
and since the product of two negative numbers is positive, then
(-2)^2 = (-2) * (-2) = 4
Answer is 4.
2. -2^2
Here, the exponent applies only to the 2, not to -2. This problem means square 2 and then take the opposite of the product. This can be written as
-(2^2)
-2^2 = -(2^2) = -(2 * 2) = -(4) = -4
Answer is -4.
3. -(2)^2
This is the same as problem 2 above. You square the 2 first, then take its negative.
-(2)^2 = -(2^2) = -(2 * 2) = -(4) = -4
Answer is -4
-10+x+4-5=7x-5
-10+4-5+5=7x-x
6x=-6
x=-1
898969 to nearest hundred thousand
8 is the hundred thousand term therefore,
900000