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4 years ago

Nine is more than twice n.

Mathematics

1 answer:

ella [17]4 years ago

6 0

I hope this helps you

9=n.n

3.3=n.n

n=3

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il63 [147K]

Answer:

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Step-by-step explanation:

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3 years ago

What is 3x + 10(1-7X)

Alinara [238K]

Answer:

-67x + 10

Step-by-step explanation:

3x + 10(1 - 7x)

(use distributive property)

3x + 10 - 70x

(simplify)

3x - 70x + 10

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3 years ago

Read 2 more answers

(01.01 MC)Why is 2 + (−3) equal to −1

tino4ka555 [31]

2+(-3) = -1

2- 3 = -1

-1=-1

The question is why though ?

It is because you keep the negative exponent which is with the biggest number. So this is how its look like +2 -3, so 3 is bigger then 2 so for that reason you keep the negative sign.

I hope that's help:)

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3 years ago

Read 2 more answers

Y= 3x-1 2x+6=y substitution method

vfiekz [6]

Answer: (7, 20)

Concept:

There are three general ways to solve systems of equations:

Elimination
Substitution
Graphing

Since the question has specific requirements, we are going to use substitution to solve the equations.

Solve:

Given equations

y = 3x - 1

2x + 6 = y

Substitute the y value since both equations has isolated [y]

2x + 6 = 3x - 1

Add 1 on both sides

2x + 6 + 1 = 3x - 1 + 1

2x + 7 = 3x

Subtract 2x on both sides

2x + 7 - 2x = 3x - 2x

$\boxed{x=7}$

Find the value of y

y = 3x - 1

y = 3(7) - 1

y = 21 - 1

$\boxed{y=20}$

Hope this helps!! :)

Please let me know if you have any questions

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3 years ago

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Free_Kalibri [48]

Answer:

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Step-by-step explanation:

1 - p,q,r are well formed formulas.

2 - $p \ \lor \ q$ is a well formed formula as well.

3 - $\neg r$ is a well formula as well

4 - $(\ p \ \lor \ q) \ \land \ \neg r$ is a well formula as well.

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3 years ago