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prohojiy [21]
3 years ago
9

6 and Find the value of this expression if x y--1. xy2 -5

Mathematics
1 answer:
zysi [14]3 years ago
5 0

Answer:

y = 5;  x = 1/5

Step-by-step explanation:

xy = 1    ----->  x = 1/y

xy^2 = 5 -----> 1/y * y^2 = 5

y^2 / y = 5

y = 5

5x = 1

x = 1/5

Hope this Helps!

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4^2•4^4 = 4096

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Answer: 4^6
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3 years ago
if your car gets 26 miles per gallon how much does it cost to drive 420 miles when gas is $2.80 per gallon​
Kitty [74]

Answer:

$45.22

Step-by-step explanation:

The number of miles per gallon can be represented by the ratio:

\frac{miles}{gallon}=\frac{26}{1}

Since we know the unit rate of 26 miles per gallon of gas, we can set up a proportion, or equivalent ratios, to find the number of gallons needed for 420 miles:

\frac{26}{1}=\frac{420}{x}, where 'x' is the number of gallons of gas

cross-multiply and divide:  26x = 420 or x ≈ 16.15 gallons

If gas is $2.80 per gallon, take the total number of gallons needed and multiply by $2.80:

16.15 x $2.80 = $45.22

5 0
3 years ago
How do I send pictures?
kompoz [17]

Step-by-step explanation:

By pressing the button that looks like this

4 0
3 years ago
Read 2 more answers
I have 1 word problem and a math problem. (word prob)A light-year is the distance that light travels in a year and is equivalent
Sati [7]

Answer:

1. 9461000000000

move the desimal in 9.461 12 places to the right to get:

9461000000000

2.

5.85 x 10^-3,

2.5 x 10^-1,

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8.5 x 10^8,

8.5 x 10^12

the smallest exponent is the smallest. Since 8.5 x 10^8 and 3.6 x 10^8 have the same exponent, go to the desimal

6 0
3 years ago
ITS EASY PLZ HELP
Angelina_Jolie [31]
  • Answer:

<em>m = (y - b)/x</em>

  • Step-by-step explanation:

<em>y = mx + b</em>

<em>mx = y - b</em>

<em>m = (y - b)/x</em>

8 0
4 years ago
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