4 years ago

Second time...40 pts! Find the surface area of the model below (image included).

Mathematics

1 answer:

charle [14.2K]4 years ago

5 0

5•8=40•2=80+(8•8)=144

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If the mass of a metal bar which is 3.25m long is 15 kg,find its mass per metre.

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The answer is 4.61 :)

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3 years ago

Sam is making a histogram of the height in inches of all 250 students in his grade. The shortest person is 48 inches and the tal

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4 years ago

Solve for -4x-4=-4(x+2)

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Answer:

no solutions

Step-by-step explanation:

-4x-4=-4(x+2)

Distribute the negative

-4x-4 = -4x-8

Add 4x to each side

-4x+4x-4 = -4x+4x-8

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4 years ago

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

A car is going 62 mph. How fast is that in kph

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That can be converted to 99.7 kilometers per hour.

Have a nice day!
~Brooke❤️

3 0

4 years ago

Read 2 more answers