Answer:
-1
Step-by-step explanation:
Slope formula: (y₂ - y₁) / (x₂ - x₁)
= (2 - 1) / (1 - 2)
= -1
Answer:
A. $3.59
Step-by-step explanation:
Okay so wrapping paper 4.99 she got three. So we would take 4.99 and subtract 80%. We would get 0.998. We multiply this by three because that's how many she got. After multiplying it's 2.994, rounded just 2.99. She payed 2.99 for wrapping paper. Now with the candy canes, we take 2.99 and subtract 80%. 0.59. Added we get 3.58, and we can go ahead and round that up to $3.59. Before tax she payed $3.59.
Answer:
Step-by-step explanation:
I think you have the question incomplete, and that this is the complete question
sin^4a + cos^4a = 1 - 2sin^2a.cos^2a
To do this, we can start my mirroring the equation.
x² + y² = (x + y)² - 2xy,
This helps us break down the power from 4 to 2, so that we have
(sin²a)² + (cos²a)² = (sin²a + cos²a) ² - 2(sin²a) (cos²a)
Recall from identity that
Sin²Φ + cos²Φ = 1, so therefore
(sin²a)² + (cos²a)² = 1² - 2(sin²a) (cos²a)
On expanding the power and the brackets, we find that we have the equation proved.
sin^4a + cos^4a = 1 - 2sin^2a.cos^2a
Answer:
The best estimate for the money in Karita's account now is $151.
Step-by-step explanation:
Given:
Karita had $138.72 in her checking account.
She wrote checks for $45.23 and $18.00.
Then she made a deposit of $75.85 into her account.
Now, to find the best estimate for the money in Karita's account now.
<em>Initial account = $138.72.</em>
<em>Deducted amount = $45.23+$18.00=$63.23.</em>
So, the amount after deduction:
$138.72 - $63.23 = $75.49.
Now, the amount after deposit:
$75.49 + $75.85 = $151.34.
Therefore, the best estimate for the money in Karita's account now is $151.
(x`-b/2a)-D/4a
(x`-7)+576
answer! (7;-576)