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3 years ago

What is the value of 11x^-3 y^-1 for x=-1 and y=2

Mathematics

1 answer:

andrey2020 [161]3 years ago

3 0

Answer:

-11/2

Step-by-step explanation:

Put the numbers into the expression and do the arithmetic.

$11(-1)^{-3}2^{-1}=\dfrac{11}{(-1)^3}\cdot\dfrac{1}{2^1}=\dfrac{-11}{2}$

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Write an equation: At 2 claps, Joe is in position 7 and walking towards zero at a rate of 3 claps per minute.

frutty [35]

Answer:

I'll assume "position 7" refers to distance and not to the order of other people.

Step-by-step explanation:

We want an equation of the form y=mx+b, where m is the slope and b is the y-intercept (the value of y when x=0). We can assume that "claps" is a new measure of distance. 0 claps is the finish.

Let's express the information provided in point format.

"At 2 claps, Joe is in position 7" is (2,7) 2 is the distance (claps) and 7 is the time (minutes)

And we can say the rate is also the slope of a line. "rate of 3 claps per minute" is 3c/m, where c is claps and m is minutes.

We can start a line equation by stating y = 3x + b, where we're using the rate, 3 c/m, as the slope, m.

We need to determine the value of b. We can use the given point (2,7) and solve for m:

y = 3x + b

7 = 3*(2) + b

b = 1

The equation becomes y = 3x + 1

y is the distance in claps and x is the time in minutes.

At a time of 2 claps he is at position of 7. b = 1 means he started 1 clap further from the finish at 0 claps.

To find the time required to reach the finish, we need to know the total distance, in claps.

6 0

2 years ago

How do you get 2 square root of 2 from 4

balandron [24]

Answer:

2 x 2 = 4

Step-by-step explanation:

If you're trying to find the square root of say, 9, it would be 3 x 3 and your trying to find a square root something it's just something multiplied by itself again. such as the square root 1225 is 35 x 35, because 35 x 35 is 1225. Sorry if this is to complicated for you I learnt this in first term and I found it easy to grasp because of the way my math teacher taught it.

Sorry in advance ¯\_(⸟‸⸟)_/¯

8 0

4 years ago

A function where the independent variable is an exponent. f(x) = ab^x, where a and b are real numbers with a # 0, b>0, and b

Alex787 [66]

Answer:

Step-by-step explanation:

C, the answer is exponential function

3 0

3 years ago

For most people the ratio of the length of their head to their total height is 1:7 use proportions to test your measurements and

alexandr1967 [171]

The correct answer for this question is this one: 5 / 7

<span>There exists the same question from other source that has the continuation of the problem. <em>Use proportions to test your measurements and see if they match this ratio. Height is 5ft</em>

So this how to solve this:

Set the equation as:
7x = 5
x = 5 / 7</span>

7 0

3 years ago

Maria solved the equation. 4 (3 x minus 8) minus 4 = 24. 12 x minus 32 minus 4 = 24. 12 x minus 36 = 24. 12 x = 60. x = 5. What

Mrac [35]

Answer:

1. Distributive property.

2. Combining like terms.

3. Addition property of equality.

4. Division property of equality.

Step-by-step explanation:

- The Distributive property states that:

$a(b+c)=ab+ac\\\\a(b-c)=ab-ab$