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pochemuha
3 years ago
6

Ayesha has a theory about 2 digit numbers that have a larger tens digit than ones digit she says that reversing the digits and s

ubtracting the reversed number from the original number will always generate a number that is a multiple of 9 is ayesha right? If so why do you think this works? If not,why not?
Mathematics
1 answer:
natta225 [31]3 years ago
5 0
10x+y-(10y+x)=10x+y-10y-x=9x-9y=9(x-y)

She's right.
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Y intersepts examples
Inga [223]

Answer:

3x+4y-12=0

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8 0
3 years ago
The perimeter of a rectangle is equal to 10. If the length is halved and the width is doubled, the new perimeter is increased by
monitta

Step-by-step explanation:

Let's call x the lenght and y the height. The perimeter will be:

p = 2x + 2y = 10

When the lenght is halved and the height double we'll have:

p = x + 4y = 14

These 2 equations form a system of equations2 that can be solved and give as result:

y = 3

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6 0
2 years ago
Express the solution graphically of – }(2x + 1) < 3.
Anit [1.1K]

Answer:

The third one counting from the top.

Step-by-step explanation:

We have the inequality:

(-1/3)*(2x + 1) < 3

The first thing we need to do is isolate x on one side of the inequality.

First we can by -3 in both sides of the inequality, and remember, because we are multiplying by a negative number, the inequality sign changes its direction:

(-3)*(-1/3)*(2x + 1) > 3*(-3)

(2x + 1) > -9

Now we can subtract 1 in both sides:

2*x + 1 - 1 > -9 - 1

2*x > -10

Now we can divide by 2 in both sides:

2*x/2 > -10/2

x > -5

Then we should see a number line such that all the points at the right of -5 are colored.

The correct option is the third one, counting from the top.

7 0
3 years ago
Solve for m: (y_1 - y_2) = m(x_1 - x_2)
Mashutka [201]
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4 years ago
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Answer:

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Step-by-step explanation:

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3 years ago
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