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aniked [119]
4 years ago
11

Solve for b in (y^-9)^b=y^45

Mathematics
1 answer:
ElenaW [278]4 years ago
8 0
Y^-9 * b = y^45   Divide by y^-9
b = \dfrac{y^{45}}{y^{-9}}

The law of powers says that if you have the same base (y in this case) and two different powers that are divided, you can subtract the denominator from the numerator (in this case)

b = y^{45- - 9} = y^{54}
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3 years ago
$ 0.79 x 3.7
Troyanec [42]
$0.79
 x 3.7
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The product of 0.79x 3.7 is 2.923. And, the decimal was moved three times to the right of the equation because of the number of spaces until the next decimal which then allows you to move the decimal three times to the left on the product. 

6 0
3 years ago
There are 5 yellow cards, 3 blue cards, and 7 red cards in a bag. A card is chosen at
Alik [6]

Answer:

0.714

Step-by-step explanation:

Argument

The total number of cards = 5 yellow. 3 blue and 7 red = 15 cards in all.

The probability of choosing a yellow card first is 5/15 = 1/3.

We are now down to 14 cards

There are 3 blue cards.

P(yellow then blue) = 1/3 * 3/14

P(yellow then blue) = 1/14 = 0.0714

4 0
2 years ago
Find the radius of a cylinder with volume<br> 351.9 cubic cm and height 7 cm.
Finger [1]

Answer:

4

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
У=-3x+3<br> y = -9x + 15
julia-pushkina [17]

Answer:

(2, - 3 )

Step-by-step explanation:

Given the 2 equations

y = - 3x + 3 → (2)

y = - 9x + 15 → (2)

Substitute y = - 3x + 3 into (2)

- 3x + 3 = - 9x + 15 ( add 9x to both sides )

6x + 3 = 15 ( subtract 3 from both sides )

6x = 12 ( divide both sides by 6 )

x = 2

Substitute x = 2 into either of the 2 equations and solve for y

Substituting into (1)

y = - 3(2) + 3 = - 6 + 3 = - 3

solution is (2, - 3 )

8 0
3 years ago
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