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3 years ago

Evaluate the following expression. 1/5^-2

Mathematics

2 answers:

Romashka [77]3 years ago

8 0

This is how the whole equation goes:
1/x^-a = x^a
So, 1/5^-2 is the same as 5^2, which is 25.

nekit [7.7K]3 years ago

6 0

Answer: the answer is 25

Step-by-step explanation:

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Simplify each expression. Then state the coefficient of the variable in each expression. 1. U + u + u + u

Pani-rosa [81]

Answer:

4u
the coefficient is 4

Step-by-step explanation:

Using the distributive property, we can write the expression as ...

(1 + 1 + 1 + 1)u = 4u

The coefficient of the variable is 4 in the simplified expression.

3 0

3 years ago

Prove z + z + z + z = 4z. Replace each step with the correct equivalent expression based on the given property or operation. Dra

Olenka [21]

Answer:

Step 1: $z*1+z*1+z*1+z*1=$

Step 2: $z(1+1+1+1)=$

Step 3: $z*4=$

Step 4: $z*4 = 4z$

Step-by-step explanation:

Given

$z+z+z+z = 4z$

Required

Match the steps with equivalent properties

Step 1: Multiplicative Identity Property

This states that:

$x = 1 * x$

So, the expression becomes:

$z*1+z*1+z*1+z*1=$

Step 2: Distributive Property

This states that:

$ab + bc = b(a+c)$

So, the expression becomes

$z*1+z*1+z*1+z*1=$

$z(1+1+1+1)=$

Step 3: Addition

Here, we simply add the expressions in the bracket

$z(1+1+1+1)=$

$z(4) =$

$z*4=$

Step 4: Commutative Property of Multiplication

This states that:

$ab=ba$

So, we have:

$z*4=$

$z*4 = 4*z$

$z*4 = 4z$

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3 years ago

-2x+6y=6 -7x+8y=-5 by substitution

Goryan [66]

Answer:

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

First we need to find the area of the rectangular piece, multiplying the length and the width:

Area of fabric: 10 * 6 = 60 cm2

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Then, if Leia uses 33 pieces of fabric, she can make a total of 33 * 4 = 132 patches.

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3 years ago

Read 2 more answers

Help me plz thx alot

Simora [160]

It is 180 degrees- hope this helps!

4 0

3 years ago