3 years ago

Help me with this question below

Mathematics

1 answer:

lutik1710 [3]3 years ago

3 0

See attached picture for steps and answer:

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Simplify: 6(x-2y) - 3(2x+y)

Hitman42 [59]

Answer: -15y

Step-by-step explanation:

6(x-2y) - 3(2x+y)

6x-12y -6x-3y

0x -15y

-15y

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2 years ago

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Using the quadratic formula, what is the value of x for x^2-4+5=0

PSYCHO15rus [73]

value of x is: x= i and x= -i

Step-by-step explanation:

We need to find the value of x from $x^2-4+5=0$ using quadratic formula.

The term is: $x^2+1=0$

The quadratic formula is:

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\$

Where a = 1, b=0,c=1

Putting values:

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\x=\frac{0\pm\sqrt{(0)^2-4(1)(1)}}{2(1)}\\x=\frac{\pm\sqrt{-4}}{2}\\x=\frac{\pm2i}{2}\\x=\pm i$

So, value of x is: x= i and x= -i

Keywords: Quadratic formula

Learn more about quadratic formula at:

#learnwithBrainly

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3 years ago

4,000 hundreds is how many ten thousand

Lemur [1.5K]

The digit 4 is in the ten thousands place. Its value is 4 ten thousands, or 40,000. The digit 7 is in the tens place.

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3 years ago

A candle stick burns at the rate of 0.2 inches per hour . After eight straight hours of burning the candle stick is 13.4 inches

Anuta_ua [19.1K]

Does this help any? It's what I got.

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3 years ago

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Jim currently has $1,250 in his bank account and Sally has $1,400 in her bank account. Jim deposits $27.50 per week and Sally

ale4655 [162]

Answer:

20 weeks.

Step-by-step explanation:

The equations of money deposits of each bankholder as a function of time are, respectively:

Jim

$p_{1} = 1250 + 27.50\cdot t\\$

Sally

$p_{2} = 1400 +20\cdot t$

The number of weeks so that both have the same amount of money is:

$1250 + 27.50\cdot t = 1400 + 20\cdot t$

$7.50\cdot t = 150$

$t = 20$

8 0

3 years ago