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3 years ago

The CUBE ROOT of a number is -1. What is the number? *

Mathematics

2 answers:

romanna [79]3 years ago

6 0

Answer:

The number is -1

Mandarinka [93]3 years ago

3 0

Answer:

Step-by-step explanation:

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Find the value of each variable<br>A. x=38,y=76<br>B. x=52,y=76<br>C. x=38,y=104<br>D. x=52,y=104

bearhunter [10]

The 2x and 76 are opposite angles so they are equal.

2x = 76

x = 38 degrees

y and 76 are adjacent angles so y = 180 - 76

= 104 degrees

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3 years ago

Todd begins piano practice ar 4:15 p.m. and ends at 5:50 p.m. How long does he practice

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He practiced for 1 hour and 30 minutes

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4 years ago

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Joe's annual income has been increasing in the same dollar amount. The first year his income was $15,200, and the 4th year his i

lidiya [134]

Answer:

Therefore 6th year his income was $19,700.

Step-by-step explanation:

Given, Joe's annual income has been increasing in some dollar amount . The first year his income was $15,200 and 4th year his income was $17,900.

A=$17900, P= $15,200 and n = 3 year

$A= P(1+\frac{r}{100} )^n$

$\Leftrightarrow 17900=15200(1+\frac{r}{100})^3$

$\Leftrightarrow (1+\frac{r}{100})^3=\frac{17900}{15200}$

$\Leftrightarrow (1+\frac{r}{100})=(\frac{17900}{15200})^{\frac{1}{3} }$

$\Leftrightarrow \frac{r}{100}=(\frac{17900}{15200})^{\frac{1}{3} }-1$

$\Leftrightarrow r=5.60$

Let $t^{th}$ year Joe's income was $19,700.

$\therefore 19700=15,200(1+\frac{5.60}{100} )^{t-1}$

$\Leftrightarrow 1.296= (1+0.056)^{t-1}$

$\Leftrightarrow 1.296= (1.056)^{t-1}$

$\Leftrightarrow log(1.296)= (t-1)log(1.056)$

$\Leftrightarrow \frac{log(1.296)}{log(1.056)}= (t-1)$

$\Leftrightarrow t-1= 4.75$

$\Leftrightarrow t= 4.75+1$

$\Leftrightarrow t = 5.75$ ≈6

Therefore 6th year his income was $19,700.

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3 years ago

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Answer:

3.42857143

Step-by-step explanation:

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