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tia_tia [17]
3 years ago
8

Which triangle is a 30°-60°-90° triangle? Mark this and return

Mathematics
2 answers:
Agata [3.3K]3 years ago
8 0
We have the formula:
60+30=90
90=90
This is a right triangle
frutty [35]3 years ago
5 0
The right triangle has an angle of 30°-60°-90°
You might be interested in
What are the solutions of the equation 9x4 – 2x2 – 7 = 0? Use u substitution to solve.
Debora [2.8K]

Answer:

the answer is 25

Step-by-step explanation:

and you get it by multiplying 9×4 keep the answer on paper then do 2×2 which is 4 subtract the two answers and subtract 7 and then you get 25, your welcome

6 0
3 years ago
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2. Latoya is building a miniature watershed model out of plaster. She wants to see where polluted surface water from a nearby fa
ddd [48]
A map of the area and tools that would help him do it.
5 0
3 years ago
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A positive integer is 10 less than another. If the sum of the reciprocal of the smaller and twice the reciprocal of the larger i
stira [4]

The two integers are are mathematically given as

x=3.70

y=13.7

<h3>What is  the two integers?</h3>

Generally, the equation for the two integers is mathematically given as

x + 10 = y

1/x + 2/y = 2/3

Substitute

1/x + 2/x+10 = 2/3

Multiply by 3

3/x + 6/x + 10 = 2

Multiply by x

2 + 6x/x + 10 = 2x

Multiply by x + 3

2(x + 10) + 6x = 2x(x + 3)

2x+20+6x=2x^2+6x

-2x^2+2x+20=0

x=3.70

hence y

x + 10 = y

3.70+ 10 = y

y=13.7

In conclusion,  the two integers are

x=3.70

y=13.7

Read more about integers

brainly.com/question/15276410

#SPJ1

3 0
2 years ago
If sinx+sin^2x=1 then what is the value of cos^12x+3cos^10x+3cos^8x+cos^6x
mr_godi [17]
\sin x+\sin^2x=1\implies\sin x=1-\sin^2x=\cos^2x

\cos^{12}x+3\cos^{10}x+3\cos^8x+\cos^6x=\sin^6x+3\sin^5x+3\sin^4x+\sin^3x
=\sin^3x(\sin^3x+3\sin^2x+3\sin x+1)
=\sin^3x(\sin x+1)^3

Let y=\sin x. Then

\sin^2x+\sin x-1=0\iff y^2+y-1=0\implies y=-\varphi,y=\varphi-1

where \varphi=\dfrac{1+\sqrt5}2\approx1.61803 is the golden ratio.

\begin{cases}y=-\varphi\\y=\varphi-1\end{cases}\implies\begin{cases}\sin x=-\varphi\\\sin x=\varphi-1\end{cases}

Since |\sin x|\le1 for all real x, we can omit the first equation, leaving us with

\sin x=\varphi-1\approx0.61803

\cos^{12}x+3\cos^{10}x+3\cos^8x+\cos^6x=\sin^3x(\sin x+1)^3
=(\varphi-1)^3\varphi^3
=1

where the last equality follows from the fact that \varphi=1+\dfrac1\varphi.
7 0
3 years ago
F + 3π = 7π How do I answer this? I'm so confused-
ivann1987 [24]
F=4x pie
This is because if you do 7-3 u get 4 then the first answer is 7PIE. So, you have to eat ur PIE hope this helps :)))
4 0
3 years ago
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