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aniked [119]
3 years ago
12

Geometry help ixl asap pls !

Mathematics
2 answers:
worty [1.4K]3 years ago
6 0
You multiply the side of the triangle 2 cm by the number of sides their are 5 and your answer should be 10. Similarly, the larger shape has a side length of 3 cm times the number of sides there are 5 and you get 15 cm which is what is shown as the perimeter of the bigger shape.
QveST [7]3 years ago
3 0

Answer:

10 i think

Step-by-step explanation:

You might be interested in
Because of the commutative property of multiplication, it is true that
rewona [7]

Answer:

It is Commutative

Step-by-step explanation:

An operation ∆ is said to be Commutative if a∆b=b∆a ∀ a,b ∈ ℝ.

Given the operation ∆ defined by:

a∆b=a X b

a=\frac{3}{4}, b=4

a∆b=\frac{3}{4}X4

=\frac{3X4}{4}=3

Similarly, for the right hand side.

(\frac{4}{3})^{-1}=\frac{3}{4}

Therefore:

b∆a=4X \frac{3}{4}

=\frac{4X3}{4}=3

These are the two ways of solving this problem and we have in fact shown that the operation is commutative as:

a∆b=b∆a=3

3 0
3 years ago
Write 400 as a product of primes. Use index notation when giving your answer.
kati45 [8]
400 = 2×2×2×2×5×5.
400 = 2^4 × 5^2 .
6 0
3 years ago
If Sarah is 24 years younger than her mother and if the sum of their ages is 68, how old is Sarah?
irina [24]
Use subtraction the answer is 44
4 0
3 years ago
How to solve complex number problem is x square + 2x +65=0
ad-work [718]
Ill teach you how to do some of these things so you won't be having to use this site 
7 0
3 years ago
A public health official is planning for the supplyof influenza vaccine needed for the upcoming flu season. She wants to estimat
Marizza181 [45]

Answer:

n=\frac{0.5(1-0.5)}{(\frac{0.04}{1.64})^2}=420.25  

And rounded up we have that n=421

Step-by-step explanation:

We know that the sample proportion have the following distribution:

\hat p \sim N(p,\sqrt{\frac{p(1-p)}{n}})

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 90% of confidence, our significance level would be given by \alpha=1-0.90=0.1 and \alpha/2 =0.05. And the critical value would be given by:

z_{\alpha/2}=-1.64, z_{1-\alpha/2}=1.64

The margin of error for the proportion interval is given by this formula:  

ME=z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}    (a)  

And on this case we have that ME =\pm 0.04 and we are interested in order to find the value of n, if we solve n from equation (a) we got:  

n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2}   (b)  

We assume that a prior estimation for p would be \hat p =0.5 since we don't have any other info provided. And replacing into equation (b) the values from part a we got:

n=\frac{0.5(1-0.5)}{(\frac{0.04}{1.64})^2}=420.25  

And rounded up we have that n=421

5 0
3 years ago
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