No.
Any number you can write completely is a rational number.
Any number with a repeating decimal fraction is also a rational number.
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Any number that goes on forever without repeating is an irrational number. These are usually represented symbolically (because they cannot be written "exactly" any other way). These include such numbers as √2, π, e, ∛(-4), and an infinite number of others.
You don't really know where the x is. The way you have written it, technically its like this. (-3^2)*x and none of the answers agree with that.
It must be -3^(2x) + 5 In that case 0,4 works. That gives (-3)^0 = -1
-1 + 5 = 4
Unfortunately so does 1,-4 because -3^2 = - 9
- 9 + 5 = - 4
If (-2,76) is the answer, then the question should be written (-3)^(2x) - 5
Until the ambiguity is gone, we're not sure.
The discount is 40% that means the discount is 40% off from the original price. Or we could write the discount as below.
discount = 40% × original price
Find the original price
original price = sale price + discount
original price = 36 + 40% original price
100% original price = 36 + 40% original price
100% original price - 40% original price = 36
60% original price = 36
0.6 original price = 36
original price = 36/0.6
original price = 60
The original price of the headphone is $60
The answer is A.
5 × 6 = 30
4 × 5 = 20
30 - 20 = 10
so there are ten more red apples so A is the answer
Let’s change all of the denominators to be 48. He now have 6/48+40/48+20/48, or 66/48. This becomes 33/24, and in total 5+33/24, or 6 and 9/24. 9/24 becomes 3/8, so your answer is B.
