X = 21 this is the answers to your question
Answer:
Step-by-step explanation:
= (x^2 + h^2 - 2xh) + (y^2 + k^2 - 2yk) As, (a-b)^2 = a^2 + b^2 - 2ab
= x^2 + h^2 - 2xh + y^2 + k^2 - 2yk
Answer:
top dot 1 1/4
bottom dot -1 1/2
Step-by-step explanation:
See I'm not sure if it was those dots on the picture
Answer: 1.
2.
3.
Step-by-step explanation:
We use Standard form to expresss a very large or very small numberc in the product of a decimal form of number [generally between 1 and 10] and powers of ten.
For example : Thirty seven thousand four hundred thirty can be written as 37,430 or it can be written as .
Let's write the given numbers as
1. Three hundred seventy-two thousands
= 372,000
2. six nine hundredths
3. Five thousand, three hundred one and ninety six thousandths
= 5,301. 96
Answer:
see explanation
Step-by-step explanation:
Given a quadratic equation in standard form
ax² + bx + c = 0 ( a ≠ 0 )
Then for the equation to have 2 real roots , the discriminant must be greater than zero , that is
b² - 4ac > 0
x² + x + c = 0 ← is in standard form
with a = 1, b = 1, c = c , then
b² - 4ac > 0
1² - (4 × 1 × c) > 0
1 - 4c > 0 ( subtract 1 from both sides )
- 4c > - 1
Divide both sides by - 4, reversing the inequality as a result of dividing by a negative quantity.
c <