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Naya [18.7K]
3 years ago
6

9/10x-1/5y=52/5 what is x and y

Mathematics
1 answer:
Nadusha1986 [10]3 years ago
7 0

so 52/5 is 10.4

so we have to do the other side

9/10*X=7-1/5*Y=10

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For what value(s) of x does cos(x) = -1?
mixer [17]

Answer:

4. none of the above

Step-by-step explanation:

cos(x)=-1 is 180 where value x is.180

3 0
3 years ago
MARKING BRAINLIEST!
enot [183]

Answer:

Your Answer would be 30! Hope this helped!

4 0
2 years ago
Read 2 more answers
Help me please with this question
Gelneren [198K]

You could go both ways with this question, and they're both true:

-- circle "greatest" in both places;

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6 0
3 years ago
National statistics show that 23% of men smoke and 18.5% of women smoke. A random sample of 175 men indicated that 45 were smoke
NeTakaya

Answer:

98% C.I. = [-0.1270, 0.0994]

Step-by-step explanation:

Here

p1= proportion of men smokers

p1= 45/175= 0.2571

p2= proportion of women smokers

p2= 42/155= 0.2709

1)  Choose the significance level ∝= 0.02

2) The formula for confidence interval is

(p1^- p2^)- z ∝/2sqrt( p1^(1-p1^)/n1 + ( p2^(1-p2^)/n2))

and

(p1^- p2^) z ∝/2sqrt( p1^(1-p1^)/n1 + ( p2^(1-p2^)/n2))

<u>3)  The z value is 2.05</u>

<u>4) Calculations:</u>

(p1^- p2^)- z ∝/2sqrt( p1^(1-p1^)/n1 + ( p2^(1-p2^)/n2))

Putting the values

= 0.2571-0.2709)(-2.05) sqrt ( 0.2571(1-0.2571)/175+ 0.2709(1-0.2709)/155)

=-0.1270 ( using calculator)

And

(p1^- p2^)z ∝/2sqrt( p1^(1-p1^)/n1 + ( p2^(1-p2^)/n2))

Putting the values

= 0.2571-0.2709)(2.05) sqrt ( 0.2571(1-0.2571)/175+ 0.2709(1-0.2709)/155)

=0.0994  ( using calculator)

and Putting ± 2.05 in the confidence interval formula we get limits (-0.1270, 0.0994)

6 0
3 years ago
Please help me on this question. 20 points guaranteed!!
julsineya [31]

Answer:

A cylinder with a volume of 27\pi cubic inches and a height of 3 inches

Step-by-step explanation:

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Volume = 27\pi

Height = 3

⇒ 27\pi = 3\pir²

⇒ 9 = r²

⇒ r = √9 = 3

So height = radius

7 0
2 years ago
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