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2 years ago

Please help me with this problem in geometry.

Mathematics

1 answer:

Yuki888 [10]2 years ago

5 0

Answer:

The photo attached could be of use

Step-by-step explanation:

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Also what is the answer to 2 - 130

valina [46]

Answer:

-128

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Find the number of permutations in the word fission <br> 1020<br> 1500<br> 1260<br> 2400

irina [24]

There are 7 letters in fission, which we'll use as a factorial in the numerator. Of those 7 letters, there are two I's and two S's. To account for these repeating letters, we'll use the factorials of how many times the letters repeat and plug them into the denominator.

The factorial of 7 should be your numerator, and two factorials of 2 should be your denominator:

$\frac{7!}{2! \times 2!} = \frac{5040}{2 \times 2} = \frac{5040}{4} = 1260$

There are 1260 different permutations of the word fission.

5 0

3 years ago

If the average price of four shoes is 50 dollars, and three of thise pairs are priced at 35 40 and 55, what is the price of thr

Vlad1618 [11]

Maybe the price of the fourth pair is like about fifty dollars because the average of the four shoes are fifty dollars. The other shoe pairs that he/she bought is thirty five, forty and fifty dollars.

So, the price is about fifty dollars.

4 0

3 years ago

Find the dimensions of a rectangle whose perimeter is 22 meters and whose area is 28 square meters

kondaur [170]

You can solve this by finding all of the factors of 28 and seeing which ones add up to 22 when doubled.

The factors of 28 are as follows:

28 x 1 28(2) + 1(2) = 56 + 2 = 58 ≠ 22
14 x 2 14(2) + 2(2) = 28 + 4 = 32 ≠ 22
7 x 4 7(2) + 4(2) = 14 + 8 = 22

The dimensions of the rectangle are 4 x 7.

8 0

3 years ago

Find all values of k for which the function y=sin(kt) satisfies the differential equation y′′+16y=0. Separate your answers by co

ziro4ka [17]

Answer:

0, 4, -4 and they may want you to mention formally all the kt multiples of $\pi$ .

Step-by-step explanation:

Let's do the second derivative of the function: $y(t)=sin(k\,t)$

$y'(t) =k\,cos(k\,t)\\y"(t)=-k^2\,sin(kt)$

So now we want:

$y"+16\,y'=0\\-k^2\,sin(kt)+\,16\,sin(kt)=0\\sin(kt)\,(16-k^2)=0\\$

Then we have to include the zeros of the binomial ( $16-k^2$ ) which as you say are +4 and -4, and also the zeros of $sin(kt)$ , which include all those values of

$kt=0\,,\,\pi\,\,,\,2\pi\, ,\,etc.$

So an extra one that they may want you to include is k = 0

5 0

3 years ago