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3 years ago

Which expression is equivalent to r^9/r^3

Mathematics

2 answers:

BARSIC [14]3 years ago

8 0

Answer:

The correct option is B.

Step-by-step explanation:

The given expression is

$\frac{r^9}{r^3}$

According to the property of exponent,

$\frac{x^a}{x^b}=x^{a-b}$

Using this property of exponent, we get

$\frac{r^9}{r^3}=r^{9-3}$

$\frac{r^9}{r^3}=r^{6}$

The expression $r^{6}$ is equivalent to the given expression.

Therefore the correct option is B.

Deffense [45]3 years ago

4 0

$\cfrac{r^9}{r^3} =r^{9-3}=r^6$

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Ira Lisetskai [31]

Answer:

Step-by-step explanation:

4/5 cup of brown sugar. Needs 1/4 cup. How many cups left?

Okay, so 4/5 = 0.80, 1/4=0.25.

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Which is 55/100

Divide both numbers by 5

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3 years ago

Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used. Match the linear equations with their x-

jolli1 [7]

Answer:

Part 1) $x-2y=2$ ----> (2,0) and (0,-1)

Part 2) $-3x+3y=7$ ----> (-7/3,0) and (0,7/3)

Part 3) $7x-y=21$ ----> (3,0) and (0,-21)

Part 4) $3x-5y=-20$ ----> (-20/3,0) and (0,4)

Step-by-step explanation:

we know that

The y-intercept is the value of y when the value of x is equal to zero

The x-intercept is the value of x when the value of y is equal to zero

Part 1) we have

$x-2y=2$

1) Find the x-intercept

For y=0

$x-2(0)=2\\x=2$

the x-intercept is (2,0)

2) Find the y-intercept

For x=0

$0-2y=2\\y=-1$

the y-intercept is (0,-1)

Part 2) we have

$-3x+3y=7$

1) Find the x-intercept

For y=0

$-3x+3(0)=7\\x=-\frac{7}{3}$

the x-intercept is (-7/3,0)

2) Find the y-intercept

For x=0

$-3(0)+3y=7\\y=\frac{7}{3}$

the y-intercept is (0,7/3)

Part 3) we have

$7x-y=21$

1) Find the x-intercept

For y=0

$7x-(0)=21\\x=3$

the x-intercept is (3,0)

2) Find the y-intercept

For x=0

$7(0)-y=21\\y=-21$

the y-intercept is (0,-21)

Part 4) we have

$3x-5y=-20$

1) Find the x-intercept

For y=0

$3x-5(0)=-20\\x=-\frac{20}{3}$

the x-intercept is (-20/3,0)

2) Find the y-intercept

For x=0

$3(0)-5y=-20\\y=4$

the y-intercept is (0,4)

8 0

3 years ago

What is the radius of (x - 3)2 + (y + 4)2 = 14?

DochEvi [55]

(x-h)^2+(y-k)^2=r^2
r=radius
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(x-3)^2+(y+4)^2=(√14)^2
answer is 2nd option
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2 years ago

Compare the subtraction problems (6 8 − 5 8 = 1 8 ) and (6 9 − 7 9 = −1 9 ). Why is the answer to the first problem positive and

Dmitrij [34]

Answer:

A D E

Step-by-step explanation:

A. In the second problem, the first fraction is less than the second fraction.

D. If you subtract a lesser number from a greater number, the answer is positive.

E. If you subtract a greater number from a lesser number, the answer is negative.

6 0

2 years ago

Read 2 more answers

What is the value pqr/pq-qr if p=-3,q=2 and r=2?

yaroslaw [1]

Answer:

1.2 OR 1 1/5

Step-by-step explanation:

-3 x 2 x 2 = -12

-3 x 2 = -6

2 x = 4

-12 / -6 - 4 =

-12 / -10 =

1.2 OR 1 1/5

Hope that helps!

6 0

3 years ago