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3 years ago

Which of the following is true?

Mathematics

1 answer:

Maurinko [17]3 years ago

4 0

Answer: B

Because 3 kilograms = 3,000 and 3,000 kilograms = 3,000 grams

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Helppppp ill give 10 points

Nitella [24]

Answer:

Step-by-step explanation:

4 0

3 years ago

Use addition to solve the linear system of equations. Include all of your work in your final answer. $\left\{ \right.$ 3x-y=6

ad-work [718]

Answer:

Solving the given linear system, we get x = 1 and y = -3.

The solution set is: (1,-3)

Step-by-step explanation:

We need to solve the linear system of equations.

$3x-y=6 \\y=x-4$

We can write second equation y=x-4 as: $-x+y=-4$

Let:

$3x-y=6--eq(1)\\ -x+y=-4--eq(2)$

Now, Adding equation 1 and 2

$3x-y=6\\ -x+y=-4\\--------\\2x+0y=2\\2x=2\\x=\frac{2}{2}\\x=1$

So, we get x = 1

Now, put value of x in second equation to find value of y:

$y=x-4\\Put\:x=1\\y=1-4\\y=-3$

So, we get y = -3

Solving the given linear system, we get x = 1 and y = -3.

The solution set is: (1,-3)

4 0

3 years ago

Find the residual if you know the actual number is 3 and the predicted value is 1.6

IgorC [24]

Answer:

The correct option is A.

Step-by-step explanation:

The difference between actual value and predicted value is called residual.

Formula of residual is

$e=y-\hat{y}$

Where, y is observed value or actual value and $\hat{y}$ is predicted value.

$e=3-1.6$

$e=1.4$

The value of residual is 1.4 and option A is correct.

5 0

3 years ago

How do you solve x<img src="https://tex.z-dn.net/?f=x%5E%7B2%7D%20%2B4x%2B3%3D0" id="TexFormula1" title="x^{2} +4x+3=0" alt="x^{

Hoochie [10]

Answer:

${ \tt{ {x}^{2} + 4x + 3 = 0}} \\ { \tt{(x + 1)(x + 3) = 0}} \\ \\ { \tt{x = - 1 \: \: and \: \: - 3}}$

7 0

3 years ago

Solve for f.

Genrish500 [490]

Answer:

Step-by-step explanation:

4f-3 = 5f-6

First I would try to get the f's on one side and the other numbers on the other, to do this you woudl have to add 6 to both sides

4f -3 = 5f -6

+6 +6

Making it into: 4f + 3 = 5f

Now to get the 4f on the other side we will have to subtract it from both sides

4f +3 = 5f

-4f -4f

3= f (Remember you do not have to put the 1, making 3 your answer)

6 0

2 years ago