3 years ago

What percent of 700 is 385

Mathematics

1 answer:

mixer [17]3 years ago

6 0

Hope this helped you hope i get brainlist :)

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A service station on the interstate charges $2.29 per gallon for gasoline and $1.89 per quart for oil. What would be a reasonabl

grigory [225]

Answer) $23
Explanation)
10 x 2.29 = 18.9
1.89 + 1.89 = 3.78
18.9 + 3.78 = 22.68

3 0

3 years ago

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Can you please Help!!!! 20 points!!!!!!

Mademuasel [1]

Answer:

I'm doing the same thing and, I don't understand it either.

Step-by-step explanation:

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3 years ago

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The life in hours of a 75-watt light bulb is known to be normally distributed with standard deviation σ = 25 hours. A random sam

irina [24]

Answer: a) (1008.34,1019.658) b) (1009.24,1018.76)

Step-by-step explanation:

Since we have given that

n = 75

mean = 1014 hours

Standard deviation = 25 hours

At 95% two sided , z = 1.96

So, confidence interval would be

$\bar{x}\pm z\dfrac{\sigma}{\sqrt{n}}\\\\=1014\pm 1.96\dfrac{25}{\sqrt{75}}\\\\=1014\pm 5.658\\\\=(1014-5.658,1014+5.658)\\\\=(1008.34,1019.658)$

(b) Construct a 95% lower confidence bound on the mean life.

z = 1.65

So, confidence interval would be

$\bar{x}\pm z\times \dfrac{\sigma}{\sqrt{n}}\\\\=1014\pm 1.65\times \dfrac{25}{\sqrt{75}}\\\\=1014\pm 4.76\\\\=(1014-4.76,1014+4.76)\\\\=(1009.24,1018.76)$

Hence, a) (1008.34,1019.658) b) (1009.24,1018.76)

4 0

4 years ago

What ia the common ratio of the sequence? -2 , 6, -18, 54,...

Jlenok [28]

Its a multiplication by -3 on each term, so I think you're gonna answer is by r=-3, maybe?

7 0

3 years ago

Please answer correctly i will give u 10 pts and brainleist ! be first

Jet001 [13]

Answer:

m= 15 b=25

Step-by-step explanation:

the slope is 15 because thta is the unit rate and the missing point that isnt shown is (0,25)

5 0

3 years ago