X +y = 0 4x + 3y = 10 solve the systems by the method of substitution

Mathematics

1 answer:

Anna [14]3 years ago

8 0

Answer:Solve for the first variable in one of the equations, then substitute the result into the other equation.

X=4x/3−10/3

y=−4x/3+10/3

Step-by-step explanation:

You might be interested in

Let f and g be the function defined by f(x) =x-10 and g(x) = 4 - x and then value of (f-g) (5) is ??

lions [1.4K]

Answer:

$f - g = x - 10 - 4 + x = 2x - 14 \\ f - g(5) =10 - 14 = - 4$

4 0

3 years ago

A veterinarian's office recorded one particular week that they had 50 patients. The following table shows the recorded number of

Gre4nikov [31]

Answer:

1. The correct answer is 46%

2. The correct answer is .07

3. The correct answer is (34%,58%)

4. The correct answer is (32%,60%)

Step-by-step explanation:

1. Let's calculate the percentage or proportion of patients that were dogs:

p = (7 + 4 + 5 + 5 + 2)/50 = 23/50 = 0.46

The correct answer is 46%

2. Let's estimate the standard error, using the given formula, this way:

S.e = √ (0.46 * 0.54)/50 = √0.049 = 0.07

The correct answer is .07

3. Let's calculate the confidence limits of the 90% confidence interval, this way:

Confidence limits = proportion +/- 1.645 * standard error

Confidence limits = 0.46 +/- 1.645 * 0.07

Confidence limits = 0.46 +/- 0.12

Confidence limits = 0.34, 0.58

The correct answer is (34%,58%)

4. Let's calculate the confidence limits of the 95% confidence interval, this way:

Confidence limits = proportion +/- 1.96 * standard error

Confidence limits = 0.46 +/- 1.96 * 0.07

Confidence limits = 0.46 +/- 0.14

Confidence limits = 0.32, 0.60

The correct answer is (32%,60%)

3 0

3 years ago

Please help asap Which description best describes the graph?

Mice21 [21]

First, let's identify if it's increasing or decreasing.

Since the graph is going downwards, it's decreasing.

Next, is the graph linear or nonlinear?

This graph is definitely not a line, so it's nonlinear.

Your answer is nonlinear decreasing.

Have an awesome day! :)

3 0

3 years ago

On a piece of paper, graph f(x) =3 • (2)^x. Then determine which answer

nignag [31]

The graph should look most like graph D.

This is that equation graphed out: