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ale4655 [162]
3 years ago
12

What is an appropriate estimate for 28,457 ÷ 638?

Mathematics
2 answers:
Goshia [24]3 years ago
7 0
44.6034482759..............
prisoha [69]3 years ago
5 0
44.6 is the answer, but the estimate is 45 since you round up from .5+
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Solve the systems by the addition method x - 2y = - 4 2x + y = 7
vfiekz [6]
<h2>x - 2y = -4</h2><h2>2x + y = 7</h2><h2 />

To solve this system of equations by addition, our first goal is to cancel

out one of the variables by adding the two equations together.

However, if we add these two equations together right away, nothing

will cancel so we need to set things up so a variable will cancel.

Notice that we have an 2x in our second equation.

If we had a -2x in our first equation, then the x's would cancel out.

In order to create a -2x in the first equation, we simply

multiply both sides of the first equation by -2.

So we have (-2)(x - 2y) = (-4)(-2) which can be rewritten as -2x + 4y = 8.

Now rewrite both equations, as shown below.

<h2>-2x + 4y = 8</h2><h2>2x + y = 7</h2><h2 />

Now when we add the equations together, the x terms

will cancel out and we're left with 5y = 15.

Dividing both sides by 5, <em>y = 3</em>.

To solve for x, plug a 3 in for y in either one of our 2 original equations.

So let's go with our second equation.

Plugging a 3 in for y, we get 2x + (3) = 7.

Now subtract 4 from both sides to get 2x = 4.

Dividing both sides by 2, we fid that <em>x = 2</em>.

Since x = 2 and y = 3, our answer is the ordered pair (2, 3).

5 0
3 years ago
HELP PLEASE (BRAINIEST)
tangare [24]

Answer: Passage 1: The sailboat bobbed on the sea as the <u>(cool) </u>afternoon tide lapped at the quaint little ship.

Step-by-step explanation: An idea or feeling that a word invokes in addition to its literal or primary meaning.

8 0
2 years ago
What is the slope of 2,000=20×+10y?
sergiy2304 [10]
Y=-2x+200 hope this helps
3 0
3 years ago
Read 2 more answers
hi people i suck at math and is in 10th grade i have a question if you start at 5,2 and move 3 units left and 2 units up what do
irina [24]

Answer:

(2,4)

Step-by-step explanation:

left( - ) and right( + ) (x axes)

up( + ) and down( - ) (y axes)

(5,2)  just add

5 - 3 = 2

2 + 2 = 4

Answer :

(2,4)

8 0
3 years ago
Suppose f(x)=x^2 what is the graph of g(x)=f(2x)
Naddika [18.5K]

Answer:

Since g(x) = f(2x), this means we substitute 2x in place of x for f(x):

g(x) = f(2x) = (2x)² = 4x²

Graphing this, the parabola is not moved from the parent graph f(x) = x², but the graph is compressed horizontally by a factor of 4.Step-by-step explanation:

7 0
3 years ago
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