Answer:
what is the Y
Step-by-step explanation:
The equation would be s = 45w and she would have 360 in 8 weeks.
In order to find this, we first have to find the per week amount. To find this, we divide the amount by the number of weeks.
135/3 = 45
Now that we have this we can multiply that by the variable and set equal to the total amount.
s = 45w
Now to find the amount in 8 weeks, simply plug in the 8 to w.
s = 45w
s = 45(8)
s = 360
Answer:
X=7
Step-by-step explanation:
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Answer:
x = 4.65 or x = -0.65 (to 2 d.p)
Step-by-step explanation:
To complete the square, use the formula x² + bx + c = (x + b/2)² - (b/2)² + c
- In this case, x² - 8x - 32 = (x - 4)² - 16 - 32
- This simplifies to (x - 4)² - 48 = 0
To solve this:
- First, add 48 to both sides → (x - 4)² = 48
- Next, square root both sides → x - 4 = ± √48 (remember that the square root of a number always has a positive and negative value)
- Finally, add 4 to both sides → x = 4 ± √7
x has 2 solutions
x = 2 + √7 or x = 2 - √7
x = 4.65 or x = -0.65 (to 2 d.p)
Hope this helps!
