Whats the value of 5y if -2(3y+5)=-4

Answers

Answer 1

Answer: Hi Yasmindaniele!

$-2.(3y+5) = -4 \n \n \n 3y+5 = (-4)/(-2) \n \n \n 3y + 5 = 2 \n \n \n 3y = -3 \n \n \n y = -1 \n \n \n 5y = -5$

GoodLuck...

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What are the solutions of the equation x4 + 6x2 + 5 = 0? Use u substitution to solve.x = i and x = i 5

X=+ i and x i 5

x=+ -1 and x= + -5

x= -1 and x= + - 5

Answers

The solutions of the equation are $x=\pm i, x=\pm √(5)i$

Explanation:

Given that the equation is $x^(4)+6 x^(2)+5=0$

We need to determine the solutions of the equation.

Let us substitute $x^(2) =u$ and $x^4=u^2$

Thus, the equation becomes,

$u^(2)+6 u+5=0$

Factoring the equation, we get;

$(u+1)(u+5)=0$

$u=-1, u=-5$

Substituting back $x^(2) =u$ and solve for x.

First, we shall substitute $u=-1$

Thus, we get;

$x^(2) =-1$

$x=√(-1)$

$x=\pm i$

Similarly, substituting $u=-5$ , we get;

$x^(2) =-5$

$x=√(-5)$

$x=\pm √(5)i$

Thus, the solutions of the equation are $x=\pm i, x=\pm √(5)i$

How many 6 digit number combinations are there?

Answers

The smallest 6-digit number is 100,000 .

The largest 6-digit number is 999,999 .

If you count from the smallest one to the largest one, you'll name
every possible one.

But that's exactly the same thing as counting from 1 to 999,999 except
skipping the first 99,999 because they don't have enough digits.

So you're left with (999,999 minus 99,999) = 900,000 numbers remaining

999999 × 2 if you want to include the negatives

Estimate the product by rounding 2×6,254

Answers

2 x 6,000=x(variable)

Solve

If you round 6,254 to 6,000, and do the equation 2x6,000, then the estimated product of 2x6,254 would be 12,000.

You bought a car for $20,000. You have owned it for one year, and it is now worth $16,000. What is the percent decrease in your car's value?

Answers

Bought for $20,000-$16000( present rate)=$4000 is the difference
$2000 is 10% of 20000 times 2 is $4000=answer

Write the equation of the line that is perpendicular to the line y = 2x + 2 and passes through the point (6, 3). y = 2x + 6

y = - x + 3

y = - x + 6

y = 2x + 3