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Lelechka [254]
3 years ago
12

Which rational number is positive?

Mathematics
2 answers:
podryga [215]3 years ago
7 0
D represents the only number that has a negative numerator and negative denominator and thus has a positive sign.
choli [55]3 years ago
6 0
Hello!

A negative number divided by a negative number is a positive number. If our problem contains an odd number of negatives, it is negative.

Therefore, our correct answer is D. -3/-2 (which is 6).

I hope this helps!
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7. If the volume of a cylinder, where the height is 3 times the radius, is 247, find the surface area of the cylinder.
lakkis [162]

Answer:

3.87987×10^5

Step-by-step explanation:

surface area of the cylinder =2πrh+2πr²

=2*π*247*3+2*π*(247)²

=3.87987×10^5

7 0
3 years ago
A: 7x - 3x +10<br> B:+4x²+66-4<br> A-B=
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Answer:

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hope it helps

stay safe healthy and happy.

8 0
3 years ago
A survey was conducted that asked 1004 people how many books they had read in the past year. Results indicated that x overbarequ
melisa1 [442]

Answer:

Step-by-step explanation:

Given that a survey was conducted that asked 1004 people how many books they had read in the past year.

Results are:

x bar =12.5

s = 16.6

n = 1004

Std error of sample = \frac{s}{\sqrt{n-1} } =\frac{16.6}{\sqrt{1003} }\\=0.524152\\=0.524

Since population std dev is not known t critical value can be used for confidence interval.

df = 1004-1 =1003

t critical = 1.96

Margin of error = 1.96(std error) =1.027

Confidence interval lower bound = 12.5-1.027 = 11.473

Upper bound = 12.5+1.027 = 13.527

6 0
3 years ago
Patty has 20$ to spend on gifts for her friends.her mother gives her 5$ more .if each gift costs 5$ , how many gifts can she buy
nevsk [136]
She can buy 5 gifts 
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7 0
3 years ago
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What is the equation of the line?
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