Answer:
no real solutions
Step-by-step explanation:
Given a quadratic equation in standard form
ax² + bx + c = 0 : a ≠ 0
Then the nature of the roots can be determined from the discriminant
b² - 4ac
• If b² - 4ac > 0 then 2 real and distinct roots
• If b² - 4ac = 0 then 2 real and equal roots
• If b² - 4ac < 0 then no real roots
Given
n(7n + 8) = - 10 ← distribute left side
7n² + 8n = - 10 ( add 10 to both sides )
7n² + 8n + 10 = 0 ← in standard form
with a = 7, b = 8 and c = 10, thus
b² - 4ac = 8² - (4 × 7 × 10) = 64 - 280 = - 216
Since b² - 4ac < 0 the equation has no real roots
Answer:
easy theanswer is -14x
Step-by-step explanation:
The answer is A, pi. (Sorry I don’t have three pi symbol on my phone.)
Step-by-step explanation:
Given
radius (r) = 9
π = 3.14
Now
Volume of sphere
![\frac{4}{3}\pi \times {r}^{3}](https://tex.z-dn.net/?f=%20%5Cfrac%7B4%7D%7B3%7D%5Cpi%20%5Ctimes%20%20%7Br%7D%5E%7B3%7D%20%20)
![\frac{4}{3} \times 3.14 \times {9}^{3}](https://tex.z-dn.net/?f=%20%5Cfrac%7B4%7D%7B3%7D%20%20%5Ctimes%203.14%20%5Ctimes%20%20%7B9%7D%5E%7B3%7D%20)
![1.33 \times 3.14 \times 729](https://tex.z-dn.net/?f=1.33%20%5Ctimes%203.14%20%5Ctimes%20729%20)
3044.4498
Answer:
a = 11
b = -5
c = 25
Step-by-step explanation:
a.
6 + 4x = 50
50 - 6 = 44
4x = 44
x = 11
b.
(x+9) * -2 = -8
(x+9) = 4
x = -5
c.
2(37.5) + 2(x) = 125
75 + 2x = 125
125 - 75 = 2x
50 = 2x
x = 25
If my answer is incorrect, pls correct me!
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-Chetan K