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4 years ago

Determine the diameter of the circle with the given equation x2+y2=9

Mathematics

1 answer:

seraphim [82]4 years ago

8 0

9=r², r=3
d=2r=2*3=6
the diameter is 6.

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I have a perimeter of 30 ft in an area of 14 square feet what is the length and the width

Mazyrski [523]

Answer:

14 and 1 are the length and width

Step-by-step explanation:

3 0

3 years ago

About 35% of all U.S. households have a cellular phone. If you called 7 households what's the probability that, a. All 7 househo

Mandarinka [93]

Answer:

p = 0.35

q = 0.65

n = 7

Step-by-step explanation:

To calculate the distribution, we have the following values;

p = 35% = 35/100 = 0.35

q = 1-p = 1-0.35 = 0.65

n = 7

4 0

3 years ago

Read 2 more answers

I am a three-digit number. My tens digit is six more than my ones digit. My hundreds digit is eight less than my tens digit. Wha

katen-ka-za [31]

Answer:

193

Step-by-step explanation:

9, the tens digit, is six more than 3, the ones digit. 1, the hundreds digit, is 8 less than the tens digit, 9. It can't be any other number combination than this.

Hope this helps! :)

4 0

4 years ago

Jane wants to estimate the proportion of students on her campus who eat cauliflower. after surveying 39 students, she finds 4 w

stellarik [79]

Let $x$ be the number of students who eat cauliflower.

Therefore, $x=4$ .

Let $n$ be the total number of students surveyed.

Therefore, $n=39$

Thus, $\hat p$ $=\frac{4}{39} =0.10256$

Now, for 90% confidence level, from the table we know that $Z=1.645$ .

The formula for the interval range of proportion of students is :

$p= \hat p\pm Z\sqrt{\frac{\hat p(1-\hat p)}{n}}$

Plugging in the values we get:

$p=0.10256\pm 1.645\sqrt{\frac{0.10256(1-0.10256)}{39}}=0.10256\pm 0.04858=0.15114, 0.05398$

Thus, Jane is 90% confident that the population proportion p, for students who eat cauliflower in her campus is between 5.398% and 15.114% (after converting the answer we got to percentage).

7 0

4 years ago

Can someone please help me with this???

lozanna [386]

A- When one variable increases the other variable decreases. :)

7 0

3 years ago