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Vera_Pavlovna [14]
2 years ago
10

Devon bought 16 bottles of paint for his art. The paint cost $21 per bottle. Devon uses the compatible numbers below to estimate

the total cost. What is his estimate?
Devon needs to estimate: 16 x 21

He uses compatible numbers: 15 x 20 = ?
Mathematics
1 answer:
Flura [38]2 years ago
3 0
Compatible numbers 15 x 20= 300
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Answer:

1. congreunt; reflection

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Step-by-step explanation:

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4 :)

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Suppose a tub has the shape of an elliptical paraboloid given by z = ax2+by2 (where a, b are some positive constants). If a marb
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Answer:

It would roll in this direction.

\nu  =  (-a/\sqrt{a^2+b^2},-b/\sqrt{a^2+b^2})

Step-by-step explanation:

It would roll to the direction of maximum decrease, which is the -1 times the direction of maximum increase, which is given by the gradient of the function.  

Since  

z =  ax^2  + by^2

For this case, the gradient of your function would be

\nabla z  = (2ax , 2by)

And  -1  times the gradient of your function would be

-\nabla z  = (-2ax , -2by)\\

Then, at

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and to conclude it would roll in this direction.

\nu  =  (-a/\sqrt{a^2+b^2},-b/\sqrt{a^2+b^2})

6 0
3 years ago
emeril used a total of 7 1/4 cups of flour to make three pastries. he used 2 1/4 cups of flour for the first and 2 1/3 cups for
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There will be 781440 yards in 444 miles.

Given, The double number lines show the ratio of yards to miles.

A double number line with 6 equally spaced tick marks.

The line labeled yards, reads from left to right: 0, four unlabeled tick marks, 8,800. The line labeled miles, reads from left to right: 0, four unlabeled tick marks, 5.

as, 1 mile = 1760 yards

we have to find the number of yards in 444 miles.

if 1 mile = 1760 yards

on multiplying both the sides by 444, we get

444 miles = 1760 × 444

444 miles =  781440 yards.

So, there are 781440 yards in 444 miles.

Hence, there are 781440 yards in 444 miles.

Learn more about Coordinate Geometry here brainly.com/question/18269861

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