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3 years ago

What is the distance between (-11, -20) and (-11, 5)?

2 answers:

6 0

The distance between (-11, -20) and (-11,5) is 25. Since both of the x values are the same, we know that they are both on the same x line. For the y values, -20 and 5, Their difference from each other is 25. Therefore, the distance between those coordinates are 25.

Bond [772]3 years ago

6 0

The distance is 25 because the square root of 5 minus -20 squared and -11 minus -11 squared is the square root of 625 and you would get 25 as your answer.

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Materials and labor for each pet groomed

ivolga24 [154]

Answer:

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3 years ago

The time, t, required to travel a fixed distance varies inversely as the

Lemur [1.5K]

You must travel at 42 mph for 4 hours

Solution:

Time varies inversely as rate of motion

Let "t" be the time required

Let "r" be the rate of motion

Then, we get

$t \propto \frac{1}{r}\\\\t = k \times \frac{1}{r}\\\\t = \frac{k}{r} -------- eqn 1$

Where, "k" is the constant of proportionality

You travel 3 hours at a rate of 56 mph

Substitute t = 3 and r = 56 in eqn 1

$3 = \frac{k}{56}\\\\k = 3 \times 56\\\\k = 168$

Find the rate you must travel for 4 hours

r = ? and t = 4

Substitute t = 4 and k = 168 in eqn 1

$4 = \frac{168}{r}\\\\r = \frac{168}{4}\\\\r = 42$

Thus you must travel at 42 mph for 4 hours

4 0

4 years ago

an ice cream factory makes 200 quarts of ice cream in 10 hours . How many quarts could be made in 12 hours? what was that rate p

IRINA_888 [86]

200=10x divide by 10 and get 20=x. they make 20 quarts of ice cream every hour. multiply by 12, we get 240=12x. they can maek 240 quarts in 12 hours

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3 years ago

Read 2 more answers

If you could do question 9 I would be so thankful. Use substitution. No one is helping me, please help

insens350 [35]

Answer:

step 1. x = 2y - 4 on the 1st equation

step 2. 5(2y- 4) - 6y +18 = 0 plug x from 1st equation into the 2nd equation

step 3. 10y - 20 - 6y + 18 = 0

step 4. 4y - 2 = 0

step 5. y = 1/2

step 6. x = -3 plug y into 1st equation

step 7. (-3, 1/2) is the answer.

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3 years ago

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Find an equation of a line whose graph intersects the graph of the parabola y=x^2 at (a) two points, (b) one point, and (c) no p

ExtremeBDS [4]

1) 2 points:
We need to come up with a function that intersects the graph at two points, meaning has two (x,y) in common with the function. If you look at the graph of y=x^2, you see that it would be quite easy to draw a line that intersects the graph twice. In fact, there are an infinite number of functions that would satisfy this.
One easy function is y=2. This is a horizontal line in which y=2 for all values of x. In the graph y=x^2, y=2 intersects twice.
2=x^2
x^2= √2 or -√2
the shared points are (√2,2) and (-√2,2)

b) one point:
Here, we want to find an equation with only one (x,y) in common with y=x². This is a bit trickier.
One easy solution is y=-x²
Looking at a graph of the two functions, you see that y=-x² is a reflection across the x-axis of y= x². The two functions have only one point in common: (0,0).

c) no point in common
Take another look at the graph of y=x². You see that the function never crosses the x-axis. A simple function that will never intersect the graph is y=-2. Since y is negative for all values of x, it is guaranteed to never intersect y=x², a function in which y is positive for all negative or positive values of x.

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4 years ago