3 years ago

What is the formula for area of a rectangle/square/parallelogram?

Mathematics

1 answer:

adell [148]3 years ago

8 0

Answer:

Rectangle= lw (length times width)

Square= a²

Parallelogram=bh (base times height)

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3. What are the roots of the polynomial y = x³ - 8?

zzz [600]

Step-by-step explanation:

x^3 is a perfect cube, 8 is a perfect cube, so we use difference of cubes.

${a}^{3} - {b}^{3} = (a - b)( {a}^{2} + ab + {b}^{2} )$

Cube root of x^3 is x.

Cube root of 8 is 2

a=x

b= 2.

$(x - 2)( {x}^{2} - 2x + 4)$

Set these equations equal to zero

$x - 2 = 0$

$x = 2$

${x}^{2} - 2x + 4 = 0$

If we do the discriminant, we get a negative answer so we would have two imaginary solutions,

Thus the only real root is 2.

If you want imaginary solutions, apply the quadratic formula.

$1 + i \sqrt{ 3 }$

and

$1 - i \sqrt{3}$

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2 years ago

<img src="https://tex.z-dn.net/?f=%20%7B10%7D%5Ex%20%3D%205" id="TexFormula1" title=" {10}^x = 5" alt=" {10}^x = 5" align="absmi

My name is Ann [436]

Answer:

below

Step-by-step explanation:

10ˣ = 5

applying log to both sides

xlog 10 = log5

x = 0•699

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3 years ago

Divide.

krek1111 [17]

Answer:

Why do you talk with the other people so much???

Step-by-step explaWnation:

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3 years ago

A bank account balance, b, for an account starting with s dollars, earning an annual interest rate, r, and left untouched for n

lesya692 [45]

B = 100(1 + 0.04)^12 = 100(1.04)^12 = 100(1.601) = $160.10

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3 years ago

natali 33 [55]

The answer is D. 15+18+12+5= 50 and there are 5 ramblers

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