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liubo4ka [24]
3 years ago
7

True or False? The following triangle has just one 90 degree angle. Any scaled copy of this triangle must also have one 90 degre

e angle.
Mathematics
2 answers:
FinnZ [79.3K]3 years ago
5 0

Answer:

True

Step-by-step explanation:

True because it's a copy of the 90 degree angle.

DIA [1.3K]3 years ago
4 0

Answer:

False

Step-by-step explanation:

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Arthur starts his first workout routine by doing 10 push-ups. Each workout after the first, he plans to do 2 more push-ups than
Reptile [31]

Answer:

50

Step-by-step explanation:

10 + (20x2) = 50

4 0
3 years ago
On a unit circle, the vertical distance from the x-axis to a point on the perimeter of the circle is twice the horizontal distan
swat32

Check the picture below.

since the vertical distance, namely the y-coordinate, is twice as much as the horizontal, then if the horizontal is "x", the vertical one must be 2x.

let's find the hypotenuse first.

\bf \textit{using the pythagorean theorem} \\\\ c^2=a^2+b^2\implies c=\sqrt{a^2+b^2} \qquad \begin{cases} c=hypotenuse\\ a=\stackrel{adjacent}{x}\\ b=\stackrel{opposite}{2x}\\ \end{cases} \\\\\\ c=\sqrt{x^2+(2x)^2}\implies c=\sqrt{x^2+4x^2}\implies c=\sqrt{5x^2}\implies c=x\sqrt{5} \\\\[-0.35em] ~\dotfill

\bf sin(\theta )=\cfrac{\stackrel{opposite}{2~~\begin{matrix} x \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~ }}{\stackrel{hypotenuse}{~~\begin{matrix} x \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~ \sqrt{5}}}\implies \stackrel{\textit{and rationalizing the denominator}~\hfill }{\cfrac{2}{\sqrt{5}}\cdot \cfrac{\sqrt{5}}{\sqrt{5}}\implies \cfrac{2\sqrt{5}}{(\sqrt{5})^2}\implies \cfrac{2\sqrt{5}}{5}}

5 0
3 years ago
Select the best answer. About how much will a $459.95 LCD TV cost including the sales tax of 8.25%?
erma4kov [3.2K]
I used the Old Change New method and I crossed multiplied.
The answer is about $498 (I rounded $497.895875)
Check: $498>459.95 by 8.25%

5 0
3 years ago
Which is not equivalent 1/5 7/35 6/25
Reptile [31]
Find a common denominator...

1/5 = 7/35
7/35 = 7/35
6/25 = ... can't have 35 as a denominator. Not equivalent.
4 0
3 years ago
Find the volume of the solid. The volume of the solid is ____ cubic centimeters
Illusion [34]
Is there a picture ?
6 0
3 years ago
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