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2 years ago

Is the answer one ? Equation- 4+x+2-2x=5

1 answer:

6 0

Combine like terms on the left side of the equation. Add 4 and 2 and subtract x and 2x. After combining like terms you should get: 6 - x = 5.

Subtract 6 from both sides to isolate x. Now you have: -x = -1. Make x into a positive by dividing both sides by -1. You are correct - the answer is x = 1.

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Please explain

BartSMP [9]

24-3x=-27
-24 -24
-3x=-51
— —
-3 -3

X=17

7 0

2 years ago

Can someone please help me on this one? I will give BRAINLIEST to whoever has the correct answer.

Reptile [31]

I think the first one is 4x=3

6 0

2 years ago

Question number 8. Prove that 3 + √5 is an irrational number.

Marina86 [1]

Answer :

Let's assume the opposite of the statement i.e., 3 + √5 is a rational number.

$\\ \sf \: 3 + \sqrt{5} = \frac{a}{b} \\ \\ \qquad \: \tiny \sf{(where \: \: a \: \: and \: \: b \: \: are \: \: integers \: \: and \: \: b \: \neq \: 0)} \\$

$\\ \sf \: \sqrt{5} = \frac{a}{b} - 3 = \frac{a - 3b}{b} \\$

Since, a, b and 3 are integers. So,

$\\ \sf \: \frac{p - 3b}{b} \\ \\ \qquad \tiny \sf{ \: (is \: \: a \: \: rational \: \: number \:) } \\$

Here, it contradicts that √5 is an irrational number.

because of the wrong assumption that 3 + √5 is a rational number.

$\\$

Hence, 3 + √5 is an irrational number.

7 0

2 years ago

If 4 workers take 900 hours to finish a project, how long will it take 8 workers to complete the same project?

butalik [34]

Answer: 350

Step-by-step explanation: If you multiply the amount of <em>workers</em> by two, then you divide the amount of <em>time </em>by two, and vice versa. So, in other words, whatever number you multiply the workers by, divide the time by that same number. I hope this helps!

6 0

2 years ago

Please help I have this due in 30 minutes

Hitman42 [59]

Answer:

3/4

Step-by-step explanation:

3/5×5/4

3×5/5×4

=15/20

15÷3/20÷5

=3/4

6 0

2 years ago