I thought of a two-digit number. The unit digit of my number is 7 more than the tens digit cubed. What is my number?

18.

Step-by-step explanation:

If the tens digit is x^3 the unit digit is x^3 + 7

So 10 * x^3 + x^3 + 7 < 100    (as its a 2 digit number).

11x^3 < 93

x^3 < 8 5/11

x <  2.04

As x must be an integer it is either 1 or 2.

It cannot be 2 as 2^3 = 8 and 8+7 = 15 which cannot be the tens digit so it must be 1.

The answer is 1  and (1+7)  = 18.

18.  

Step-by-step explanation:  

If the tens digit is x^3 the unit digit is x^3 + 7  

So 10 * x^3 + x^3 + 7 < 100    (as its a 2 digit number).  

11x^3 < 93  

x^3 < 8 5/11  

x <  2.04  

As x must be an integer it is either 1 or 2.  

It cannot be 2 as 2^3 = 8 and 8+7 = 15 which cannot be the tens digit so it must be 1.  

The answer is 1  and (1+7)  = 18.

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)