I think a. 8x+7x=90
That's how i usually do these type of questions.
~
x= 6
8x=48
7x=42
Answer:
Step-by-step explanation:
if it is converting its 7253/10000
to percent 72.53
scientific notation is 7.253 *10-1 the -1 is on top of the 10
Answer:
D
Step-by-step explanation:
360h+6,400 >8,020, with a solution is h> 4.
<h3>
Answer: 1/3</h3>
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Explanation:
A = multiples of 5 between 1 and 30
A = {5,10,15,20,25,30}
B = multiples of 6 between 1 and 30
B = {6,12,18,24,30}
There are 6 items in set A and 5 items in set B. This gives 6+5 = 11 items overall; however, notice that "30" shows up twice. So we have to subtract off 1 to account for this. This means there are 11-1 = 10 unique values that are either a multiple of 5, a multiple of 6, or a multiple of both. This is out of 30 numbers in the set {1, 2, 3, ... , 29, 30}
The probability we want is 10/30 = 1/3
Hello there!
For questions like these, I always like to translate the figure in my head or on paper so I can get a visual of what is going on.
Take answer A, and translate the figure in your head 1 unit to the left, and then rotate it 180 degrees counterclockwise about the origin. This happens to be the correct answer so we don't have to investigate the others.
This means the answer is A.
Remember that when you move the figure one unit left, it becomes 1 unit away from the x-axis, so the figure must STAY that way during a rotation about the origin.
I really hope this helps!
Best wishes :)