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just olya [345]
3 years ago
7

I dont knowwwwwwwwwwwwwwwwwwwww

Mathematics
1 answer:
Mariulka [41]3 years ago
7 0

9514 1404 393

Answer:

   9/16

Step-by-step explanation:

After the first exchange the amount in dollars is ...

  £320 × $1.25/£1 = $400

After the spending, the amount in dollars is ...

  $400 -100 = $300

After the second exchange, the amount in pounds is ...

  $300 × £0.60/$1 = £180

This amount is 180/320 = 9/16 of the original amount.

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If x/2 + 3y=6, then solve for x in terms of y and y in terms of x
Elden [556K]
X/2 +3y = 6 . . . . . . . . starting point
x/2 = 6 -3y . . . . . . . . subtract terms that don't have x
x = 2(6 -3y) . . . . . . . . multiply by the inverse of the x-coefficient
x = 12 -6y . . . . . . . . . expand if you like

3y = 6 -x/2 . . . . . . . . subtract terms that don't have y
y = (6 -x/2)/3 . . . . . . . multiply by the inverse of the y-coefficient
y = 2 -x/6 . . . . . . . . . expand if you like
5 0
3 years ago
If (a,-3) is a point in the graph of y=x^2+4 what is a?
netineya [11]

Answer:

A would be 13

So the full point would be (13,-3)

5 0
3 years ago
Write an equation of a line that passes through the points (1, 7) and (5, 19) . Give the final form in slope intercept form. (Pl
Alinara [238K]

Answer:

y = 3x + 4

Step-by-step explanation:

slope = (y2 -y1)/(x2 - x1)

y2 = 19

y1 = 7

x2 = 5

x1 = 1

Slope = (19 - 7)/(5 - 1)

slope = 12 / 4

slope = 3

So far what you have is

y = 3x + b                      To solve for b, use either of the two points.

x = 1

y = 7

7 = 3(1) + b

7 = 3 + b

b = 4

The final equation is

y = 3x + 4                    

We should check that with the other  point

x = 5                  Find y

y = 3(5) + 4

y = 15 + 4

y = 19              Ans it checks.

3 0
3 years ago
What is the solution to the inequality 10x + 18 < -2
solong [7]
<h3>Answer:  x < -2, choice B</h3>

===========================================

Work Shown:

10x + 18 < -2

10x + 18-18 < -2-18 ... subtract 18 from both sides

10x < -20

10x/10 < -20/10 ... divide both sides by 10

x < -2

3 0
3 years ago
The area of the rectangle shown is 200 square units. Find the value of x?
Stels [109]

Answer:

x=40

Step-by-step explanation:

8(1/2x + 5) = 200

4x + 40 = 200

4x = 160

x = 40

6 0
3 years ago
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