Answer:
D one real solution
Step-by-step explanation:
x^2 - 8x + 16 = 0
This is in the form
ax^2 +bx + c = 0
so we can use the discriminant to determine the number of solutions
b^2 -4ac
(-8)^2 -4(1)(16)
64 - 64
0
Since the discriminant is zero, there is one real solution.
To find the reciprocal of a fraction, you switch the numerator and denominator.
Integers can be written as fractions:
<em>n = </em>an integer
<em>n
</em>-- =<em> </em><em>n </em>as a fraction
1
1
-- = the reciprocal of <em>n</em>
<em>n
</em>
Therefore, the number you are looking for is 5, because 5 + 1/5 <--- which is the reciprocal of 5,
= 5 1/5
Answer:
The sum of 7 and n would be 7n
Step-by-step explanation:
I don't know why my question was deleted but with this information it would be 7n
Answer:
The cost of the washing machine is P 3,544
The mark-up rate is 35.21%
Step-by-step explanation:
1. We want to calculate the cost
Mathematically, this is the difference between the selling price and the mark up
We have this as;
4,792 - 1,248 = P 3,544
2. Here, we want to calculate the mark-up rate
Mathematically, this is the percentage of mark-up
That is;
mark-up/cost price * 100%
: 1,248/3,544 * 100% = 35.21%
Answer:
x=1
Step-by-step explanation:
5x+9 - x= 13
Combine like terms
4x +9 = 13
Subtract 9 from each side
4x+9-9 = 13-9
4x = 4
Divide each side by 4
4x/4 = 4/4
x=1
