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DIA [1.3K]
3 years ago
10

I really need help so please help me I'm completely lost

Mathematics
2 answers:
o-na [289]3 years ago
4 0
SA = 1/2Pl+B

1/2 (72)(24) + 324

= 1188 in^2
son4ous [18]3 years ago
3 0
1,188 for surface area. If it's not about surface area I'm sorry bud
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I dont get this at all answer fast plz
Scrat [10]

Answer:

3960 Degrees

Step-by-step explanation:

There is a formula for this!

In this n=24 since there are 24 sides.

The formula is 180(n-2).

Hope this helped and please mark me as Brainliest if possible.

4 0
2 years ago
Using the Law of Cosines, in triangle DEF, if e=18yd, d=10yd, f=22yd, find measurement of angle D
Ivahew [28]
Check the picture below.

\bf \textit{Law of Cosines}\\ \quad \\
c^2 = {{ a}}^2+{{ b}}^2-(2{{ a}}{{ b}})cos(C)\implies 
c = \sqrt{{{ a}}^2+{{ b}}^2-(2{{ a}}{{ b}})cos(C)}
\\\\\\
\cfrac{{{ a}}^2+{{ b}}^2-c^2}{2{{ a}}{{ b}}}=cos(C)\implies cos^{-1}\left(\cfrac{{{ a}}^2+{{ b}}^2-c^2}{2{{ a}}{{ b}}}\right)=\measuredangle C\\\\
-------------------------------\\\\
\begin{cases}
d=10\\
e=18\\
f=22
\end{cases}\implies cos^{-1}\left(\cfrac{{{ 18}}^2+{{ 22}}^2-10^2}{2(18)(22)}\right)=\measuredangle D

\bf \implies cos^{-1}\left(0.893\overline{93}\right)=\measuredangle D\implies 26.63^o\approx \measuredangle D

7 0
3 years ago
Five notebooks cost $20. At this rate, how much would 2 notebooks cost
fenix001 [56]
2 notebooks* ($20/ 5 notebooks)= $8.
(Note that the unit cancels out so you get the answer)

Final answer: $8~
4 0
3 years ago
Who do you solve y= -5/2x-7
Serhud [2]

Answer:

To solve the equation y = -5/2x - 7, we can first multiply both sides of the equation by 2x + 7, which is the denominator of the fraction on the right-hand side. This gives us the equation 2xy + 7y = -5, which we can rearrange to isolate the variable y on one side of the equation. Dividing both sides of the equation by 2x + 7, we get y = -5 / (2x + 7). This is the solution to the original equation.

Step-by-step explanation:

4 0
1 year ago
Read 2 more answers
What is the solution for xsquared= 64
asambeis [7]

Answer:

64 rooted is D. 8

6 0
3 years ago
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