4 years ago

Solve for z: z³-8=0 write your answers in simplified, rationlized form.

Mathematics

1 answer:

tresset_1 [31]4 years ago

4 0

Answer:

z=2

Step-by-step explanation:

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What is the best solution to the given equation<br> (X-5) (x+2) +2x=8+ (x- 4)^2+1

scoundrel [369]

(x-5) (x+2) + 2x = 8 + (x - 4)^2 + 1
x^2 - 3x - 10 + 2x = 8 + x^2 - 8x + 16 + 1
x^2 - x - 10 = x^2 - 8x + 25
x^2 + 7x - 10 = x^2 + 25
7x - 10 = 25
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3 years ago

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4 years ago

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I need to know The value of f(1/2)

Lostsunrise [7]

$\huge\boxed{\textsf{a.)}\ 10}$

Substitute $\frac{1}{2}$ for $x$ .

$f\left(\frac{1}{2}\right)=5\cdot4^\frac{1}{2}$

Use $a^\frac{m}{n}=\sqrt[n]{a^m}$ .

$\begin{aligned}f\left(\frac{1}{2}\right)&=5\cdot\sqrt[2]{4^1}\\&=5\cdot\sqrt[2]{4}\\&=5\cdot2\\&=\boxed{10}\end{aligned}$

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2 years ago

Mike has a recipe that feeds one person that calls for 3/8 teaspoon

slavikrds [6]

Answer:

Step-by-step explanation:

You can multiply the numerator by 5 to get the answer of 15/8 which when simplified comes to 1 7/8 teaspoons. 8 goes into 15 one time with 7 left over

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3 years ago

If the interest of sum of money is 6 yrs in 3/8 of the principal . what is the rate of interest?

REY [17]

Answer :

R = 6.25%

Solution,

Let P is the principal. It means interest will be :

I=3/8 P

The formula for the interest is given by :

$I=\dfrac{PRT}{100}\\\\\dfrac{3}{8}P=\dfrac{PR\times 6}{100}\\\\\dfrac{3}{8}=\dfrac{6R}{100}\\\\R=\dfrac{300}{8\times 6}\\\\=6.25\%$

Hence, the rate of interest is 6.25%.

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3 years ago

Solve for z: z³-8=0 write your answers in simplified, rationlized form.​

Solve for z: z³-8=0 write your answers in simplified, rationlized form.