Answer:
x = 850
Step-by-step explanation:
312·85 + 689·85 - 100x = 85
Divide the whole equation by 85:
312 + 689 - ¹⁰⁰/₈₅.x = 1
1001 - 1 = ²⁰/₁₇.x
x = ¹⁷/₂₀·1000
x = 50 × 17
x = 850
Answer:
x=3 cm
Step-by-step explanation:
x/3=5/5
x=3
Answer: The store sold 288 tapes last month.
Step-by-step explanation:
Let the number of CDs be x , then the number of tapes is given by the expression : 4x
Also, the total quantity of these two items sold was 360.
Now, we have the following equation :-
The number of CDs sold in last month = 72
The number of tapes sold in last month =
Hence, the store sold 288 tapes last month.
Answer:
Step-by-step explanation:
We are given an equation 5z² + 9z - 2 = 0 and we are to find possible values of z by solving that equation
We will do the task by factorization method:
5z² + 9z - 2 = 0
We can break the midterm (+9z) in two terms such that when they are multiplied the result is -10z² i.e. equal to product of first and third term of the equation above and their sum is equal to 9z
5z² + 10z - z - 2 = 0
5z(z + 2) - 1(z + 2) = 0
taking z+2 common in the above equation
(z+2)(5z-1) = 0
We can write above equation as
(x+2) = 0 (5z-1) = 0
x = -2; 5z = 1
I=PRT, P=$1600 R=3% T=1yr
=1600x(3/100)x1
= $48.00