3 years ago

Perimeter of a rectangle HELP!

Mathematics

1 answer:

alexdok [17]3 years ago

3 0

All I can say is that your equation is wrong

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What number must you add to complete the square <br> x^2-20x=17

crimeas [40]

$(*)\ (a-b)^2=a^2-2ab+b^2$

$x^2-20x=17\\\\x^2-2\cdot x\cdot10=17\ \ \ |+10^2\\\\\underbrace{x^2-2\cdot x\cdot10+10^2}_{(*)}=17+10^2\\\\(x-10)^2=117$

Answer: 10² = 100

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3 years ago

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3 years ago

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Samples of size n = 4000 are randomly selected from a population of homeowners in Florida. The square footage of the home is rec

mash [69]

The answer is normal distribution.

Sampling distributions of means normally have normal distributions.

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3 years ago

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Can i please have help thanks.

Dmitrij [34]

Answer:

$q = 2(3r + 8)$

Step-by-step explanation:

There are two variables, q and r in the expression given. To make r the independent variable, it simply means, make q the subject of the formula, so that variable q would be dependent on variable r. As r changes, q changes also.

Thus,

$q - 10 = 6(r + 1)$

Open the parenthesis

$q - 10 = 6r + 6$

Add 10 to both sides

$q - 10 + 10 = 6r + 6 + 10$

$q = 6r + 16$

$q = 2(3r + 8)$

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3 years ago

Derrick is placing a right triangle in the coordinate plane. He knows that the longer leg is 3 times the length of the shorter l

natali 33 [55]

Answer:

Longer leg is placed on X axis.

Let the longer leg be at A(0,0) and B(3 a,0),or (-3 a,0), which is either base or altitude.

AB= 3 a

As longer leg = 3 × shorter leg

Shorter leg should be placed either at (0,a) or (0,-a) maintaining triangle as right angled triangle.

Step-by-step explanation:

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2 years ago