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2 years ago

Plz help will give 50 points

Mathematics

2 answers:

damaskus [11]2 years ago

7 0

I'm in keystone aswell waddup

Both are rational because they can be written as ratios

The first one's ratio is 13001/1000
Second one's ratio is 4701/1000

olga nikolaevna [1]2 years ago

4 0

They're both irrational.

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3(5a-b) - 2(3a-b) answer step by step

tiny-mole [99]

Answer:

9a-b

Step-by-step explanation:

1) 3 (5a - b) - 2 (3a - b)

15a - 3b - 2 (3a - b)

2) 15a - 3b - 2 (3a - b)

15a - 3b - 6a + 2b

3) 15a - 3b - 6a + 2b

9a - 3b + 2b

4) 9a + 3b + 2b

9a - b

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2 years ago

Solve the following equation in terms of x. 20x - 3y = z

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Step-by-step explanation:

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−

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2 years ago

Factor each. Please help!

Naddika [18.5K]

Answer:

1) The factors of $x^2-3x+2=0$ are $\mathbf{(x-1)(x-2)=0}$

Option C is correct.

3) The factors of $x^2+2x-8=0$ are $\mathbf{(x-2)(x+4)=0}$

Option B is correct.

Step-by-step explanation:

1) Factor : $x^2-3x+2=0$

For factoring we need to break the middle term, such that there sum is equal to middle term of expression and product is equal to product of first and last term.

The middle term : -3x

We can break them as (-2x)( -x)

Solving:

$x^2-3x+2=0\\x^2-2x-x+2=0\\x(x-2)-1(x-2)=0\\(x-1)(x-2)=0$

So, factors of $x^2-3x+2=0$ are $\mathbf{(x-1)(x-2)=0}$

Option C is correct.

3) Factor: $x^2+2x-8=0$

For factoring we need to break the middle term, such that there sum is equal to middle term of expression and product is equal to product of first and last term.

The middle term : 2x

We can break them as (4x)( -2x)

Solving

$x^2+2x-8=0\\x^2+4x-2x-8=0\\x(x+4)-2(x+4)=0\\(x-2)(x+4)=0$

So, factors of $x^2+2x-8=0$ are $\mathbf{(x-2)(x+4)=0}$

Option B is correct.

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2 years ago

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dalvyx [7]

Answer:

65000(1.02)^n.

Step-by-step explanation:

Salary = 65000(1.02)^n where n is the number of years he has worked for the company.

So after one year he earns $6500* 1.02 and after 2 years $65000 * 1.02^2.

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2 years ago

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Alik [6]

Answer:

29 Hope this helps!

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2 years ago

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