4 years ago

30% of 60 is ______ help me please :)

Mathematics

2 answers:

Natasha_Volkova [10]4 years ago

6 0

Answer: 18

Step-by-step explanation:

vfiekz [6]4 years ago

5 0

I think it is just 30

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3 years ago

The selling price of an article becomes 27/25 times the listed price due to the inclusion of sales tax. find the rate sales tax.

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Answer:

Step-by-step explanation:

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Question 11 of 25

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$\\ \sf\longmapsto x+4=\sqrt{8-x}$

$\\ \sf\longmapsto (x+4)^2=8-x$

$\\ \sf\longmapsto x^2+16+8x=8-x$

$\\ \sf\longmapsto x^2+8x-x+16-8=0$

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3 years ago

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Write a polynomial function f of the least degree that has rational coefficients,

mina [271]

Answer:

$f(x)=x^4+15x^2-16$

Step-by-step explanation:

It is given that the leading coefficient of the polynomial is 1.

We need to find a polynomial function f of the least degree.

If c is a root of a polynomial then (x-c) is a factor of the polynomial.

The given zeros are -1, 1, -4i, 4i. So,

$f(x)=(x-1)(x+1)(x+4i)(x-4i)$

$f(x)=(x^2-1^2)(x^2-(4i)^2)$

$f(x)=(x^2-1)(x^2+16)$ $[\because i^2=-1]$

$f(x)=x^2(x^2+16)-1(x^2+16)$

$f(x)=x^4+16x^2-x^2-16$

$f(x)=x^4+15x^2-16$

Therefore, the required polynomial is $f(x)=x^4+15x^2-16$ .

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3 years ago

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deff fn [24]

Answer:

B 8.5 Pounds

Step-by-step explanation:

I hope this helps!

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3 years ago

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