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Igoryamba
3 years ago
14

Cube of the number -13/15

Mathematics
2 answers:
Ivan3 years ago
7 0

Answer:

-\frac{2197}{3375}\\\mathrm{Decimal:\quad }\:-0.65096

Step-by-step explanation:

-\left(\frac{13}{15}\right)^3\\\mathrm{Apply\:exponent\:rule}:\quad \left(\frac{a}{b}\right)^c=\frac{a^c}{b^c}\\\left(\frac{13}{15}\right)^3=\frac{13^3}{15^3}\\=-\frac{13^3}{15^3}\\13^3=2197\\=-\frac{2197}{15^3}\\15^3=3375\\=-\frac{2197}{3375}

RUDIKE [14]3 years ago
3 0

Answer:

=  \frac{ - 2197}{3375}

Step-by-step explanation:

cube =  {x}^{3}  \\  (\frac{ - 13}{15})  ^{3}  \\  \frac{ - 13}{15}  \times  \frac{ - 13}{15}  \times  \frac{ - 13}{15}  \\ \\   =   \frac{ - 2197}{3375}

hope this helps

brainliest appreciated

good luck! have a nice day!

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bearhunter [10]

Answer:

4 mph

Step-by-step explanation:

Let :

Boat speed = 20 mph

speed of current = x mph

Distance against current = 2 miles

Distance with current = 3 miles

speed against current will be ; 20 - x

speed with current will be ; 20 + x

Time =distance / speed against time against = time with current

Solving Mathematically ;

2/(20-x )=3/(20 +x)

2(20+x )= 3( 20-x )

40+2x = 60-3x

3x +2x=20

5x=20

x = 20 / 5

x = 4 mph

Speed of current = 4 mph

8 0
3 years ago
In a class of 32 students, 4 have birthdays in October.What percent have October birthdays
natta225 [31]

Answer:

12.5% of students

Step-by-step explanation:

To find this you would divide 4 by 32 (4/32) and get 0.125. To find a percent, you multiply by 100 and get 12.5%

3 0
3 years ago
Cual es el resultado de 10x + 8 = 2 - 2x
castortr0y [4]

Answer:

x=-1/2

Step-by-step explanation:

Move -2x to the other side by adding 2x on both sides:

12x+8=2

Move 8 to the other side by subtracting  8 on both sides:

12x=-6

Divide by 12 on both sides:

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Hope this helps!

4 0
2 years ago
Read 2 more answers
If p+q has the value that is exactly 1/3 less than p what is the value of q
solmaris [256]

Answer:

q = - \frac{1}{3} p

Step-by-step explanation:

\frac{1}{3} less than p = \frac{2}{3} p

Thus

p + q = \frac{2}{3} p ( multiply through by 3 to clear the fraction )

3p + 3q = 2p ( subtract 3p from both sides )

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8 0
3 years ago
X + 3y = −4 x + 5y = −6
lesya [120]

For this case we must solve the following system of equations:

x + 3y = -4\\x + 5y = -6

We clear x of both equations:

x = -4-3y\\x = -6-5y

We match:

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We find the value of "x":

x = -4-3 (-1)\\x = -4 + 3\\x = -1

Thus, the solution of the system is:

(x, y): (- 1, -1)

Answer:

(x, y): (- 1, -1)

5 0
3 years ago
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