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son4ous [18]
3 years ago
15

Can someone help me I forgot how to do this

Mathematics
1 answer:
Yuliya22 [10]3 years ago
8 0
Perimeter = 7+5+7+5 = 24
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Kasey has three pieces of wood that measure 9 inches, 12 inches, and 21 inches. Can she make a right triangle
Harrizon [31]

Answer: No

Step-by-step explanation:

Add 2 sides together. If the sum of greater than the length of the 3rd side for all 3 options it can form a right triangle if it doesn’t than it can’t:

9 + 12 = 21 which is not greater than the 3rd side length of 21 so this cannot form a right triangle.

3 0
2 years ago
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I need help asap please ?!
pychu [463]

Answer:

B

Step-by-step explanation:

m+4\leq6

We subtract 4 from each side to get m\leq2

Let's plug in a random point such as 0.

0+4\leq6 \\ \\ 4\leq6

Since this is true, the inequality we made is true.

5 0
3 years ago
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There ya go here is my meme :>)

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3 years ago
Two surveys were independently conducted to estimate a population mean, μ. denote the estimates and their standard errors by x1
lyudmila [28]

Hi there what you need is lagrange multipliers for constrained minimisation. It works like this,

V(X)=α2σ2X¯1+β2\sigma2X¯2

Now we want to minimise this subject to α+β=1 or α−β−1=0.

We proceed by writing a function of alpha and beta (the paramters you want to change to minimse the variance of X, but we also introduce another parameter that multiplies the sum to zero constraint. Thus we want to minimise

f(α,β,λ)=α2σ2X¯1+β2σ2X¯2+λ(\alpha−β−1).

We partially differentiate this function w.r.t each parameter and set each partial derivative equal to zero. This gives;

∂f∂α=2ασ2X¯1+λ=0

∂f∂β=2βσ2X¯2+λ=0

∂f∂λ=α+β−1=0

Setting the first two partial derivatives equal we get

α=βσ2X¯2σ2X¯1

Substituting 1−α into this expression for beta and re-arranging for alpha gives the result for alpha. Repeating the same steps but isolating beta gives the beta result.

Lagrange multipliers and constrained minimisation crop up often in stats problems. I hope this helps!And gosh that was a lot to type!xd

3 0
3 years ago
Joyce Stein borrowed 8,460 from Merchants Trust to pay for some merchandise for her dress shopThe loan is for 45 days at 8.75 pe
disa [49]

Answer:

9.75

Step-by-step explanation:

Calculate the maturity value of a simple interest 8 month loan of Php8000 if the interest rate is 9.75.

8 0
2 years ago
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