Answer:
Step-by-step explanation:
y ∝ x^2
Introducing the proportionality constant, we have
y = kx^2
Given : y= 18 when x = 3
substitute the given values in order to get the constant
i.e 18 = k x 3^2
18 = 9k
k = 2
therefore the formula connecting x and y
⇒ y = 2x^2
To find y if x is 4, just substitute x = 4 into the formula connecting x and y
i.e y = 2 x 4^2
= 2 x 16
= 32
Answer: x = 5/2 = 2.5
Step-by-step explanation:
<u>Given expression</u>
2x (x + 3) = 2x² + 15
<u>Expand parentheses and apply the distributive property</u>
2x · x + 2x · 3 = 2x² + 15
2x² + 6x = 2x² + 15
<u>Subtract 2x² on both sides</u>
2x² + 6x - 2x² = 2x² + 15 - 2x²
6x = 15
<u>Divide 6 on both sides</u>
6x / 6 = 15 / 6
x = 15/6
Hope this helps!! :)
Please let me know if you have any questions
Answer:
$1,600
Step-by-step explanation:
To find out how much of the final balance will come from the interest earned, you have to determine the total value of the deposits made and subtract this from the balance the account will have after 5 years.
amount deposited each month: $175
months: 12*5= 60
Total amount deposited: $175*60= $10,500
Interests: $12,100-$10,500= $1,600
According to this, the amount of the final balance that will come from the interest earned is $1,600.
In order to solve the equation, set up a proportion. Use the similar sides together!
1. 16/8 = x/20.... Similar sides are in one ratio and they equal another ratio...."x" represents the side of VS
2.Solve for "x" by cross multiplying: 8x = 320
3. Divide by 8 to find "x": x = 40
Side VS equals 40. Hope this helped :)
Answer:
2x²ⁿ₊3x²ⁿ⁻¹)(x¹⁻²ⁿ₋3x²⁻²ⁿ)
Step-by-step explanation:
2x²ⁿ₊3x²ⁿ⁻¹)(x¹⁻²ⁿ₋3x²⁻²ⁿ)