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stealth61 [152]
2 years ago
14

Help me please! would give you point if you help!

Mathematics
1 answer:
Brums [2.3K]2 years ago
5 0

Answer:

dfgggggg i like ya cut g

Step-by-step explanation:xgbxgbxb

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Laboratory data show that the time required to complete two chemical reactions in a production process varies. the first reactio
tensa zangetsu [6.8K]
For the answer to the question above,
For<span> a) Mean time required for the entire process = (40+25) = 65 minutes
b) Variance time required for the entire process = (2^2+1^2) = 5 minutes
Standard deviation time required for the entire process = sqrt(5) = 2.236 minute.
I hope my answer helped you
</span>
4 0
3 years ago
Read 2 more answers
Can someone pls explain and do this solution:(
Orlov [11]

Given,

SP~QP

SR~QR

In ∆SRP and ∆QRP

SP~QP (given)

SR~QR (given)

PR=PR (common)

Therefore,

∆SRP~∆QRP by SSS congruence rule.

6 0
2 years ago
Find cos 18, sin 18. cos 3x=sin2x then x=18.
Rzqust [24]
X = 18°
cos 54° = sin 36°
cos 3 x = sin 2 x
cos ( 2 x + x ) = sin 2 x
cos 2 x cos x - sin 2 x sin x = 2 sin x cos x
( cos² x - sin² x ) cos x - 2 sin² x cos x = 2 sin x cos x   / : cos x
                                                                         ( divide both sides by cos x )
cos² x - sin² x - 2 sin² x = 2 sin x
1 - sin² x - 3 sin² x - 2 sin x = 0
- 4 sin² x - 2 sin x + 1 = 0               substitution:  u = sin x
- 4 u² - 2 u + 1 = 0
u = 2 -√20 / - 4        sin 18° =  (√ 5 - 1 )/4 
sin 18 =  \frac{ \sqrt{5} -1 }{4}
cos 18° = √( 1² - ((√5 - 1)/4)²
cos 18° = (10+2√5)^(1/2) / 4

6 0
2 years ago
Which of these expressions are equivalent? Show your work
ivanzaharov [21]

Answer:

7(2+3x)-3x and 4(3+3x)+2(1+3x)

Step-by-step explanation:

7(2+3x)-3x

= 14 + 21x - 3x

= 18x + 14

2(6x+7)+10x

= 12x + 14 + 10x

= 22x + 14

4(3+3x)+2(1+3x)

= 12 + 12x + 2 + 6x

= 18x + 14

7(2+3x)-3x and 4(3+3x)+2(1+3x) are equal expressions.

3 0
2 years ago
What is the difference between the exponets 4x and x4
schepotkina [342]
If you mean what's the difference between 4^x and x^4 then

4^x means 4 times itself x times

x^4 means x times itself 4 times or x times x times x times x
4 0
3 years ago
Read 2 more answers
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