Answer:
See below.
Step-by-step explanation:
Substitute the value for the variable and solve.
a.)
⇒ y = -5(3) + 17
⇒ y = -15 + 17
⇒ y = 2
b.)
⇒ y = 3(3) - 22
⇒ y = 9 - 22
⇒ y = -13
c.)
⇒ y = 2(3) - 25
⇒ y = 6 - 25
⇒ y = -19
d.)
⇒ y = 6(3) - 39
⇒ y = 18 - 39
⇒ y = -21
Answer:
A.2
Step-by-step explanation:
We know that |x|² = 13 and x = 3+bi:
(3+bi)² = 13
3² + b² = 13
9 + b² = 13
Subtract 9 from each side:
9 + b² - 9 = 13 - 9
b² = 4
Take the square root of each side:
√b² = √4
b = 2
3(-1) + 5y = 17
add 3 to both sides
5y=20
divide by 5
y=4
Answer:
There is usually a word that represent the operation for example difference to subtract
Step-by-step explanation:
Answer:
The original price of the laptop is 840
Step-by-step explanation:
Here, we want to calculate the original price of a laptop, given the amount that was paid off and the discount percentage enjoyed.
Firstly, let’s add back the 50 taken off. That makes a total of 50 + 664 = 714
Now, we remember he was also given 15% off. Let the price paid be x;
The 15% of x is equal the difference between x and the 714
Thus;
15/100 * x = x - 714
15x/100 = (x-714)
15x = 100(x-714)
15x = 100x -71400
100x-15x = 71400
85x = 71400
x = 71400/85
x = 840
