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3 years ago

What does this equal? 4x+5=12-2x

Mathematics

2 answers:

Harman [31]3 years ago

8 0

4x+5=12-2x
Answer: x=1.1666666 and so on

geniusboy [140]3 years ago

7 0

4x+5=12-2x
6x+5=12
6x=7
x=1.167 (rounded)

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A submarine that is 245 feet below sea level descends 83 feet and then ascends

kirill115 [55]

Answer:

-225 ft

Step-by-step explanation:

Initial position:

- 245 ft

Movements:

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Final position is -225 ft, choice B

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3 years ago

The sum of two trinomials is 7x2 - 5x + 4. if one of the trinomials is 3x2 + 2x - 1, then what is the other trinomial?

Margarita [4]

Answer:

b. 4x^2 -7x +5

Step-by-step explanation:

When you know a sum and one of its contributors, you can find the other by subtraction. The other trinomial is ...

(7x^2 -5x +4) - (3x^2 +2x -1)

= (7 -3)x^2 +(-5 -2)x +(4 -(-1))

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2 years ago

You purchased a rare painting for $150 that is increasing in value by 3% annually. How many years will it take until it is doubl

Ahat [919]

Answer:

23 years.

Step-by-step explanation:

It is given that the initial price of painting is $150 and its values increasing by 3% annually.

We need to find how many years will it take until it is doubled in value.

The value of painting after t years is given by

$y=150(1+0.03)^t$

$y=150(1.03)^t$

The value of painting after double is 300. Substitute y=300.

$300=150(1.03)^t$

Divide both sides by 150.

$2=(1.03)^t$

Taking log both sides.

$\log 2=\log (1.03)^t$

$\log 2=t\log (1.03)$

$t=\dfrac{\log 2}{\log (1.03)}$

$t=23.44977$

$t\approx 23$

Therefore, the required number of years is 23.

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3 years ago

Which of the following is the solution set to the equation: 2x(x-3)(4x+1)=0?

Troyanec [42]

Answer:

(1) {-1/4, 0, 3}

Step-by-step explanation:

Step 1: Factor left side of equation.

2x(4x+1)(x−3)=0

Step 2: Set factors equal to 0.

2x=0 or 4x+1=0 or x−3=0

x=0 or x= −1/4 or x=3

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3 years ago

Find ‘x’ in:- <br> x:6 :: 5 : 11

melomori [17]

Answer:

x = 6*5/11=30/11

7 0

2 years ago