It would be first 0.86 then it would be 8/9 and the le last one would be 0.9
A.51
because 5x15=75, 8x3=24, 75-24=51
Answer:
the correct ls D) = 12c^2-15
Step-by-step explanation:
Product means to multiply
3c (4c-5)
= (3c)(4c+5)
= (3c)(4c)+(3c)(-5)
= 12c^2-15
Oh and I got it correct on the USAPERtest
Step-by-step explanation:
16.................................................
<h3>Given</h3>
- Equation ax² + bx + c = 0
- One of the roots is twice the other
<h3>To find</h3>
<h3>Solution</h3>
Let the roots be p and q
<u>The sum and product of the roots:</u>
<u>The sum of the roots, considering p = 2q,</u>
And
<u>The product of the roots, considering p = 2q:</u>
And
<u>Substitute q with -b/(3a)</u>
- 2(-b/(3a))² = c/a
- 2b²/(9a²) = c/a
- 2b² = 9a²(c/a)
- 2b² = 9ac
=================================================
17. .................................................
<h3>Given</h3>
Quadratic equation
- ax² = bx + c = 0, with equal roots
<h3>To find</h3>
<h3>Solution</h3>
<u>Equal roots means the discriminant is zero:</u>
- D = √b² - 4ac
- √b² - 4ac = 0
- b² - 4ac = 0
- b² = 4ac
Answer:
3rd option: ![14(\sqrt[3]{x})](https://tex.z-dn.net/?f=14%28%5Csqrt%5B3%5D%7Bx%7D%29)
Step-by-step explanation:
