Answer:
√7 ≈ 2.646
Step-by-step explanation:
The law of cosines is applicable. It tells you ...
c² = a² + b² - 2ab·cos(C) . . . . . where a, b, c are triangle side lengths, and angle C is opposite side c.
Filling in the given information, you have ...
c² = 2² + 3² - 2·2·3·cos(60°) = 4 + 9 - 12·(1/2) = 7
c = √7 ≈ 2.646
The length of the third side is √7, about 2.646 units.
Hey there!
First, we need to find how much Lannie paid for all 12 copies. To do this, all we have to do is multiply the unit price ($19) by how many copies he bought (12)
$19 x 12 = $228
So, he spent $228 on the books, but we also need at add the shipping charge:
$228 + $15 = $243
Therefore, the total cost of Lannie’s order is $243
Hope this helps you!
God bless ❤️
Brainliest would be appreciated
xXxGolferGirlxXx
Answer:
-14x + 4y
Step-by-step explanation:
Step 1: Set up expression
(-10x - y) - (4x - 5y)
Step 2: Distribute negative
-10x - y - 4x + 5y
Step 3: Combine like terms
-14x + 4y
<h2>
Therefore the area of the circle is =
</h2>
Step-by-step explanation:
Given that the circumference of a circle measures 
cm
Let the radius of the circle be = r
Then circumference =
cm
According to problem
=
⇔
⇔
cm
Therefore the area of the circle is = 
=
=
Sorry math isn’t my thing but hope someone els can help you
