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3 years ago

PLEASE SOMEONE HELP ME

Mathematics

2 answers:

lilavasa [31]3 years ago

8 0

Answer: 50°

Step-by-step explanation:

Remember a straight line must equal 180°

So all angles on the line must add up to 180°

So let's take our given angles of 65° and add them together

65°+65°=130°

Now let's take 180°-130°=50°

Hitman42 [59]3 years ago

5 0

Answer:

Step-by-step explanation:

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Please help me ASAP Please help

son4ous [18]

9514 1404 393

Answer:

5 cm

Step-by-step explanation:

The kite is symmetrical about the long axis, so the height of each of the triangles is half the overall width of the kite. (10 cm/2 = 5 cm)

The height of the triangle h is 5 cm.

3 0

3 years ago

What is 4 divided by 84? I don't understand how you get 21?

Romashka [77]

What is 4 divided by 84?

4 ÷ 84 = 0.04761904761....

4 divided by 84 isn't 21, but 84 divided by 4 is 21! 4 divided by 84 is asking how many times 84 goes into 4 which is not even 1.

4 divided by 84 = 0.04761904761....

4 0

3 years ago

Find the area of the triangle below. Be sure to include the correct unit in your answer.

podryga [215]

Answer:

50yds²

Step-by-step explanation:

area of a triangle equals base times height divided by 2

a=20*5/2

a=100/2

a=50yds²

7 0

2 years ago

The density of a American white oak tree is 752 kilograms per cubic meter. If the trunk of an American white oak tree has a circ

LuckyWell [14K]

Check the picture below.

$\bf \textit{circumference of a circle}\\\\ C=2\pi r~~ \begin{cases} r=radius\\ \cline{1-1} C=4.5 \end{cases}\implies 4.5=2\pi r\implies \cfrac{4.5}{2\pi }=r \\\\[-0.35em] ~\dotfill$

$\bf \textit{volume of a cylinder}\\\\ V=\pi r^2 h~~ \begin{cases} r=radius\\ h=height\\ \cline{1-1} h=8\\ r=\frac{4.5}{2\pi } \end{cases}\implies V=\pi \left( \cfrac{4.5}{2\pi } \right)^2(8)\implies V=\begin{matrix} \pi \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix} \cdot \cfrac{20.25}{\begin{matrix} 4 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}\underset{\pi }{\begin{matrix} \pi^2 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix} }}(\stackrel{2}{\begin{matrix} 8 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}})$

$\bf V=\cfrac{40.5}{\pi }~cm^3~\hspace{9em} \stackrel{\textit{since density is }752kg~per~cm^3}{density\implies 752\left( \cfrac{40.5}{\pi } \right)}\qquad \approx ~~9694$

8 0

3 years ago

S There are 76 seats on a train. 19 seats are empty. What % of the seats on the train are empty?

Mazyrski [523]

Answer: %25

Step-by-step explanation: 19/76 = 0.25

7 0

3 years ago

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