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3 years ago

Calcule o va,lor:a)3-²b)3-³c)3-⁴

Mathematics

1 answer:

ehidna [41]3 years ago

8 0

Si estos son exponentes negativos:
a) 1/9
b) 1/27
c) 1/81

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4 years ago

Choose a variable to represent one of the unknowns. Express the remaining unknowns in terms of the variable you chose in step 1.

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Let's just choose "x" as our variable for the length of a side of the triangle.

Two sides of a triangle are equal in length and double the length of the shortest side.

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3 years ago

8x-5y=21 simultaneous linear equation 2x+9y=-5

olya-2409 [2.1K]

Answer:

$x=2$ and $y=-1$

Step-by-step explanation:

If two equations are given, we can solve one of the equation in terms of single variable and put it in the other equation which will further give the value of x and y.

For the given equations:

$8x-5y=21$ Equation:1

$2x+9y=-5$ Equation:2

Solving equation multiply equation 2 with 4 on both the sides

$8x+36y=-20$ Equation 3

Subtracting Equation:3 from Equation:1

$8x-5y-(8x+36y)=21-(-20)\\8x-5y-8x-36y=21+20\\-41y=41\\y=-1$

Putting value of 'y' in Equation:2 which will give the value of x

$2x+9y=-5\\2x+9(-1)=-5\\2x-9=-5\\2x=4\\x=2$

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3 years ago

What is $40.39 times x

Iteru [2.4K]

Answer:

$40.39x

Step-by-step explanation:

hope this helpss!!!

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3 years ago

Calcule o va,lor:a)3-²b)3-³c)3-⁴​​​​

Calcule o va,lor:a)3-²b)3-³c)3-⁴