3 years ago

What is the critical value of -1.393

Mathematics

1 answer:

Burka [1]3 years ago

5 0

Is -1.393 the significance level and if so what’s the degree of freedom?

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Step-by-step explanation:

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3 years ago

X+8y<br> units<br> 8x -x+5y units<br> what’s the perimeter?

pochemuha

Answer:

P = 16x+26y units

Step-by-step explanation:

Let the length is (x+8y) units

Width = (8x-x+5y) units

We need to find the perimeter. We know that the perimeter is equal to the sum of all sides.

P = 2[(x+8y) + (8x-x+5y)]

= 2[(8x+8y+5y)]

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A cubed-shaped box has its side lengths decreased by 3 cm, when this happens, the volume decreases by 1385cm^3. What is the side

mixer [17]

Answer:

Step-by-step explanation:

let side of cube=x cm

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again side=(x-3) cm

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$x=\frac{27\pm\sqrt{(-27)^2-4*9*(-1358)} }{2*9} \\x=\frac{27\pm\sqrt{729+48888} }{18} \\or~x=\frac{27\pm\sqrt{49617} }{18} \\or~x=\frac{27\pm 222.749}{18} \\taking positive side only as negative sign gives negative length.\\or~x=\frac{27+222.749}{18} \\or~x\approx13.87$

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3 years ago

When an elderly man passed away, he had left each of his 4 children 25% of his estate If he had $72,000, how much did each child

anzhelika [568]

Dividing $72,000 by 4, each child received $18,000

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