The equation 0.3x = 7 was translated from the problem "_____."
2 answers:
Answer:
B) 30% of what number is 7.
Step-by-step explanation:
The given equation is 0.3x = 7
Here "x" is a variable.
0.3x = 7 means 0.3 times of x equals 7.
The variable x is assigned for an unknown number and 0.3 = = 30 %
0.3x = 7
30% of x is 7
Which means 30% of the number(x) is 7.
Therefore, the answer B) 30% of what number is 7.
Note: Variables always assigned to find the unknown numbers.
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Answer:
Step-by-step explanation:
In a deck of cart, we have:
a = 4 (aces)
t = 4 (three)
j = 4 (jacks)
And the total number of cards in the deck is
n = 52
So, the probability of drawing an ace as first cart is:
At the second drawing, the ace is not replaced within the deck. So the number of cards left in the deck is
Therefore, the probability of drawing a three at the 2nd draw is
Then, at the third draw, the previous 2 cards are not replaced, so there are now
cards in the deck. So, the probability of drawing a jack is
Therefore, the total probability of drawing an ace, a three and then a jack is: