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diamong [38]
3 years ago
11

Round the decimals to whole numbers to estimate first, then

Mathematics
1 answer:
nika2105 [10]3 years ago
3 0
Pretty sure the answer would be 16.
Because 7.6 rounds to 8 and 1.4 would round up to 2. Then you multiply 8 & 2 and get 16.
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I will Make Brainliest ! Plz solve those 5 Question on the Picture.​
Temka [501]

Step-by-step explanation:

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3 years ago
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Question 4 of 25 Use the substitution method to solve the system of equations the correct ordered par x+y=5 y=7​
alex41 [277]

Answer:

x = -2

y = 7

Step-by-step explanation:

x+y=5

y=7​

x+y=5

x + 7 = 5

x = -2

x+y=5

-2 + y = 5

y = 7

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2 years ago
Darren teaches a class of 25 students. He assigns homework 3 times a week, and each assignment consists of 12 problems. How many
riadik2000 [5.3K]
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Apply green’s theorem to evaluate the integral 3ydx 2xdy
Ne4ueva [31]

The value of the integral 3ydx+2xdy using Green's theorem be - xy

The value of    \int\limits_c 3ydx+2xdy  be -xy

<h3>What is Green's theorem?</h3>

Green's theorem relates a line integral around a simple closed curve C to a double integral over the plane region D bounded by C.

If M and N are functions of (x, y) defined on an open region containing D and having continuous partial derivatives there, then

\int\limits_c Mdx+Ndy = \int\int\〖(N_{x}-M_{y}) \;dxdy

Using green's theorem, we have

\int\limits_c Mdx+Ndy = \int\int\〖(N_{x}-M_{y}) \;dxdy ............................... (1)

Here N_{x} = differentiation of function N w.r.t. x

          M_{y}= differentiation of function M w.r.t. y

Given function is: 3ydx + 2xdy

On comparing with equation (1), we get

M = 3y, N = 2x

Now, N_{x} = \Luge\frac{dN}{dx}

               = \frac{d}{dx} (2x)

              = 2

and, M_{y} = \Huge\frac{dM}{dy}

             = \frac{d}{dy} (3y)

             = 3

Now using Green's theorem

= \int\int\〖(2 -3) dx dy

= \int\int\ -dxdy

= -\int\ x dy

=-xy

The value of  \int\limits_c 3ydx+2xdy  be -xy.

Learn more about Green's theorem here:

brainly.com/question/14125421

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2 years ago
Solve for the following equation x^2+9x+14=0
sergejj [24]

Answer:

<em>R</em><em>=</em> {-7,-2}

Step-by-step explanation:

  1. divide 14 into 2 and 7 because 2x7=14
  2. write the equation as a multiplication of (x+7) and(x+2) =0
  3. for the result to equal zero. at least one of the factors must equal zero, therefore we get two solutions

5 0
3 years ago
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