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3 years ago

What is true about the radius and diameter of the circle whose diameter is 50 mm ?

Mathematics

1 answer:

agasfer [191]3 years ago

8 0

Answer:

The radius is 25mm.

Step-by-step explanation:

The radius is always half of the diameter.

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a recipe for cookies calls for 10 1/6 cups of sugar. krystal has already put in 4 2/3 cups. how many more cups does she need to

DENIUS [597]

Answer:

5 1/2 cups

Step-by-step explanation:

10 1/6 = $\frac{61}{6} cups$

10 x 6 + 1

$\frac{61}{6}$

4 2/3 = $\frac{14}{3} cups$

4 x 3 + 2

$\frac{14}{3}$

Find a common denominator (6)

$\frac{14}{3} = \frac{28}{6}$

$\frac{14}{3}$ · 2 = $\frac{28}{6}$

$\frac{61}{6} - \frac{28}{6} = \frac{33}{6}$

$\frac{33}{6}$ or 5 1/2 cups

6 0

3 years ago

One hundred rats with mothers that were exposed to high levels of tobacco smoke during pregnancy were put through a simple maze.

Paul [167]

Answer:

The 90% confidence interval for pis (0.7342, 0.8658).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

For this problem, we have that:

100 rats mothers, 80 went right. So $n = 100, \pi = \frac{80}{100} = 0.8$

90% confidence level

So $\alpha = 0.1$ , z is the value of Z that has a pvalue of $1 - \frac{0.1}{2} = 0.95$ , so $Z = 1.645$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.8 - 1.645\sqrt{\frac{0.8*0.2}{100}} = 0.7342$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.8 + 1.645\sqrt{\frac{0.8*0.2}{100}} = 0.8658$

The 90% confidence interval for pis (0.7342, 0.8658).

3 0

2 years ago

What is it in standard form

sladkih [1.3K]

Your answer is correct. A

4 0

2 years ago

Read 2 more answers

I need help asap!!!!! pls you’ll earn brainlist

Anni [7]

Answer:

1 % decrease

Step-by-step explanation:

The percent of decrease time can be written as the expression $\frac{200}{200}-\frac{198}{200} = \frac{2}{200}.$ Now, we convert the fraction into a decimal: $\frac{2}{200} = \frac{1}{100} = 0.01.$ We can convert this decimal into a percentage: 0.01*100 = 1%.

PLZ MARK BRAINLIEST!!!

6 0

3 years ago

Which is 196 written as a power of a number? A) 98^2 B) 13^2 C) 49^4 D) 14^2

kap26 [50]

Its not A. because , 98^2 = 9,604
Its not B. because , 13^2 = 169
Its for sure not C. because, 49^4 = 5,764,801
It is most likey, D. because 14^2 = 196
Option: D 14^2 would most likely be your answer

Reason , because 14(14) = 196 = 14^2

☺

3 0

3 years ago