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Schach [20]
2 years ago
12

Please this is your answer.​

Mathematics
2 answers:
navik [9.2K]2 years ago
6 0
Number 10 is correct. Number 11 is incorrect it’s 21 not -21.

11. 6 - 3 )3-(2-3)-10)-3
6 - 3(3- (-1) -10) -3
6 - 3 (3 + 1 -10) -3
6 - 3 x (-6) - 3
6 + 18 - 3
= 21
Effectus [21]2 years ago
4 0

Answer:

10. it is correct it is 24

11. 21

Step-by-step explanation:

I could not see the answer but it should look like this:

11.6-3(3-[2-3]-10)-3

6-3(3-[-1]-10)-3

6-3(3-(-1)-10)-3

6-3(4-10)-3

6-3(-6)-3

6-(-18)-3

(6-(-18))-3

24-3

21

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The surface are I cannot find
Ilia_Sergeevich [38]

check the picture below.


so the triangular prism is really just 3 rectangles and 2 right-triangles,

now, we know the base of one of the triangles is 2.6, what's its height?

since it's a right-triangle, we can simply use the pythagorean theorem to get "h".


\bf \textit{using the pythagorean theorem}
\\\\
c^2=a^2+b^2\implies \sqrt{c^2-a^2}=b
\qquad
\begin{cases}
c=\stackrel{hypotenuse}{5.2}\\
a=\stackrel{adjacent}{2.6}\\
b=\stackrel{opposite}{h}\\
\end{cases}
\\\\\\
\sqrt{5.2^2-2.6^2}=h\implies 4.5\approx h


so, we can now, simply get the area of both of the triangles and the three rectangles and sum them up, and that's the area of the triangular prism.


\bf \stackrel{two~triangles}{2\left[ \cfrac{1}{2}(2.6)(4.5) \right]}~~+~~\stackrel{rectangle}{(2.6\cdot 4.3)}~~+~~\stackrel{rectangle}{(4.3\cdot 3.9)}~~+~~\stackrel{rectangle}{(4.3\cdot 5.2)}
\\\\\\
11.7+11.18+22.36\implies \blacktriangleright 45.24 \blacktriangleleft

5 0
3 years ago
Read 2 more answers
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zubka84 [21]

Answer:

slope = - \frac{1}{2}

Step-by-step explanation:

The equation of a line in slope- intercept form is

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Given a line with slope m then the slope of a line perpendicular to it is

m_{perpendicular} = - \frac{1}{m} = - \frac{1}{2}

4 0
3 years ago
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Answer:

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8 0
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11. Anna's goal is to walk 12 miles a week. This week, she walked 1 and 2/3
elena-s [515]

Answer:

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