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pentagon [3]
3 years ago
8

Find the opposite of: - 4x2 - 6x + 3

Mathematics
1 answer:
aleksandr82 [10.1K]3 years ago
7 0
Wdym by opposite ??????
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За^n(а^n + a^n-1) what is it??
solniwko [45]
Distribute the 3a^n to all the other values then solve...
(3a^n*a^n)+(3a^n*a^n)+(3a^n*-1)
4a^2n+4a^2n-3a^n=
8a^2n-3a^n
8 0
4 years ago
Which equation shows the result of 42 divided by 15?
KatRina [158]

Answer:

42=2×15+12

Step-by-step explanation:

2×15=30

therefore 30+12=42

5 0
4 years ago
What is the input of arccos
suter [353]

Answer:

It returns the angle whose cosine is a given number.

Step-by-step explanation:

For every trigonometry function, there is an inverse function that works in reverse. These inverse functions have the same name but with 'arc' in front. (On some calculators the arccos button may be labeled arccos, or sometimes cos-1.) So the inverse of cos is arccos etc. When we see "arccos x", we understand it as "the angle whose cosine is x"

cos30 = 0.866 Means: The cosine of 30 degrees is 0.866

arccos 0.866 = 30 Means: The angle whose cosine is 0.866 is 30 degrees.

Use arccos when you know the cosine of an angle and want to know the actual angle.

8 0
3 years ago
Simplify 21:9<br> Pls help me
Leno4ka [110]

Answer:

\frac{21}{9}  \\  \\  \frac{7}{3}  \\  \\

3 0
3 years ago
Help me by using formula how did came by reason<br>​
nasty-shy [4]

Answer:

angleABC=isosceles triangle

angleB=(180-50)÷2=65

angle B=angleX(alternative angle)

angleB=65degree

8 0
3 years ago
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