All categories

4 years ago

Perimeter of a triangle

Mathematics

2 answers:

Archy [21]4 years ago

7 0

P= a+b+c is the way to find the perimeter of a triangle

<span />

VladimirAG [237]4 years ago

6 0

Formula to find the perimeter of rectangle is
2 × length + breadth
2×l+b

You might be interested in

I need help with school

PolarNik [594]

Answer:

I think its 2 sorry if wrong

Step-by-step explanation:

5 0

3 years ago

The sugar sweet company will choose from two companies to transport it's sugar to market the first company charges $5500 to rent

borishaifa [10]

It's about 83.544 sorry if I get it wrong I'm really sorry I add

6 0

3 years ago

On every three hamburgers that McDonald's makes, they use 9 pickles write the ratio in simplest form.How many pickles would they

murzikaleks [220]

Hamburgers/pickles
3/9 x/100 cross multiply to get 300=9xx
Now you have an algebraic equation.
divide 300 by 9, and you'll have your answer which is 100 pickles.

4 0

4 years ago

Read 2 more answers

Suppose we are interested in analyzing the weights of NFL players. We know that on average, NFL players weigh 247 pounds with a

Diano4ka-milaya [45]

Answer:

a) The standard error would be of 8.58 pounds.

b) The margin of error is 14.11 pounds.

c) The 90% confidence interval for the population mean is between 232.89 pounds and 261.11 pounds

Step-by-step explanation:

a.What is the standard error?

The standard error is

$s = \frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample. So

$s = \frac{47}{\sqrt{30}} = 8.58$

The standard error would be of 8.58 pounds.

b.What is the margin of error at 90% confidence?

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.9}{2} = 0.05$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.05 = 0.95$ , so $z = 1.645$

Now, find the margin of error M as such

$M = z*s = 1.645*8.58 = 14.11$

The margin of error is 14.11 pounds.

c. Using my sample of 30, what would be the 90% confidence interval for the population mean?

Lower bound: Sample mean subtracted by the margin of error.

247 - 14.11 = 232.89 pounds

Upper bound

247 + 14.11 = 261.11 pounds

The 90% confidence interval for the population mean is between 232.89 pounds and 261.11 pounds

4 0

3 years ago

Suppose you have $20 to spend on party decorations. Balloons are $0.05 each, streamers are $0.25 each, and noisemakers are $0.40

sergejj [24]

[C] 0.05b + 0.25s + 0.4n = 20

b = balloons

s = streamers

n = noisemaker

Since they already give us the price of each item we just need to add a variable at the end of each one since we don't know how many of each item is bought. Adding the costs of all the party supplies should not go over $20. We can automatically eliminate B and D. We can also eliminate A because the prices of each item are incorrect. Therefore, C is the correct answer.

Best of Luck!

4 0

3 years ago