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RSB [31]
3 years ago
13

(3² +5 x (180/15)² pls help eidjwnnwjdjjsnwkfkdjanwkfodnanendnsjajejdksoejnfkdksjrf

Mathematics
1 answer:
ladessa [460]3 years ago
7 0

Answer:

729

Step-by-step explanation:

I'm sorry if it isn't. :) have a good day

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The ___________ of a lens or mirror is a rotational symmetry axis of the surfaces.
densk [106]

Answer:

Optical axis

Step-by-step explanation:

Optical axis is the rotational symmetry axis of the surfaces.

A line with a certain degree of rotational symmetry is called as the optical axis in an optical system.

It is the straight line that passes through the geometric center of the lens and joins two curvature centers of its surfaces.

It is also called as the principal axis.

5 0
3 years ago
IXL Help: R.8 Trigonometric ratios: find a side length
gavmur [86]
What are the questions?
5 0
3 years ago
Hi there! i going to fail if you don´t answer :D :D
NARA [144]

Answer:

it will be 1/2

Step-by-step explanation:

because x×y={(6,2), (6, 8),(9,2), (9, 8)}

5 0
3 years ago
Dana and her 4 friends are going on a camping trip. Dana wants to see how much fruit she can share so everyone will get the same
kupik [55]
I agree that the answer is 6. 30÷5=6
6 0
3 years ago
Find all the zeros of the equation
lapo4ka [179]

Divide both sides by -3, and replace x^2 with y. Then

-3x^4+27x^2+1200=0\iff y^2-9y-400=0

Factorize the quadratic in y to get

y^2-9y-400=(y+16)(y-25)=0\implies y=-16,y=25

which in turn means

x^2=-16,x^2=25

But x^2\ge0 for all real x, so we can ignore the first solution. This leaves us with

x^2=25\implies x=\pm\sqrt{25}=\pm5

If we allow for any complex solution, then we can continue with the solution we ignored:

x^2=-16\implies x=\pm\sqrt{-16}=\pm i\sqrt{16}=\pm4i

6 0
4 years ago
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