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Margarita [4]
3 years ago
9

Help me please I can’t do this anymore it’s so hard

Mathematics
1 answer:
never [62]3 years ago
6 0

Answer:

2

Step-by-step explanation:

Don't really know how to explain it. OmniCalculator is very helpful.

Hope that this helps!

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A psychology class consists of 14 males and 36 females. if the professor selects name from the class list using random sampling,
Pavel [41]
The total number of students is 14+36, or 50. So the chance that a selected student is female is 36/50, or 18/25.
3 0
3 years ago
Solve trigonometric function<br><br> cos2∅ + sin∅ × csc∅ / sin2∅
aliina [53]

Answer:

Step-by-step explanation:

\sf Formula: \\\\\sin 2 \theta    =  2 \sin \theta  \cos \theta


\text {\sf \Large Solution :}

\cos 2 \theta +\dfrac{\sin \theta\cdot \cos \theta  }{\sin 2 \theta }  = \\\\\ \cos 2 \theta +\dfrac{\sin \theta\cdot \cos \theta}{2\sin \theta\cdot \cos \theta}  =\boxed{\cos 2 \theta +\dfrac{1}{2} }

3 0
2 years ago
Read 2 more answers
Using long division to find the quotient, what changes do you first
lora16 [44]

Answer:

\frac{125x^3 - 8}{5x - 2} = 25x^2 + 10x +4

Step-by-step explanation:

Given

Dividend = 125x^3 - 8

Divisor = 5x - 2

Required

Determine the quotient

See attachment for complete process.

First, divide 125x^3 by 5x

\frac{125x^3}{5x} =25x^2

Write 25x^2 at the top

Multiply 5x - 2 by 25x^2

= 125x^3 - 50x^2

Subtract from 125x^3 - 8

i.e.

125x^3 - 8 - (125x^3 - 50x^2) = 50x^2 - 8

Step 2:

Divide 50x^2 by 5x

\frac{50x^2}{5x} = 10x

Write 10x at the top

Multiply 5x - 2 by 10x

= 50x^2 - 20x

Subtract from 50x^2 - 8

i.e.

50x^2 - 8 - (50x^2 - 20x) = 20x - 8

Step 3:

Divide 20x by 5x

\frac{20x}{5x} = 4

Write 4 at the top

Multiply 5x - 2 by 4

= 20x - 8

Subtract from 20x - 8

i.e.

20x - 8 - (20x - 8) = 0

Hence:

\frac{125x^3 - 8}{5x - 2} = 25x^2 + 10x +4

8 0
3 years ago
If sin x = .42, what is cos x?
34kurt
From the identity,
sin^2(x)+cos^2(x)=1
then 
cos(x)=sqrt(1-sin^2(x))
where sin(x) is given as 0.42.

Note that the above answer applies to 0<x<90 degrees
6 0
3 years ago
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