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2 years ago

A system of equations is shown below. y = -5x - 2 y=3x - 4 What is the solution to the system of equations?

Mathematics

1 answer:

marishachu [46]2 years ago

8 0

Answer:

the answer is (x,y) (1/4 -13/4)

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9. The diagram below shows a plan for a park. ABCD is a rectangle. APB and DQC are semicircles

ANEK [815]

Answer:

this is the answer please give brainliest

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3 years ago

A cheese processing company wants to estimate the mean cholesterol content of all one-ounce servings of a type of cheese. The es

Mrrafil [7]

Answer:

The minimum sample size required to construct a 95% confidence interval for the population mean is 65.

Step-by-step explanation:

We are given the following in the question:

Population standard deviation,

$\sigma = 3.10\text{ milligrams}$

We need to construct a 95% confidence interval such that the estimate is within 0.75 milligrams of the population mean.

Thus, the margin of error must me 0.75

Formula for margin of error:

$z_{critical}\times \dfrac{\sigma}{\sqrt{n}}$

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

Putting values, we get,

$0.75 = 1.86\times \dfrac{3.10}{\sqrt{n}}\\\\\sqrt{n} = \dfrac{1.96\times 3.10}{0.75}\\\\\sqrt{n} = 8.101\\\Rightarrow n = 65.63\approx 65$

Thus, the minimum sample size required to construct a 95% confidence interval for the population mean is 65.

5 0

2 years ago

HELP! 10 minutes!!!!!

kotykmax [81]

Answer:

this one 1/5 = 3 x a

Step-by-step explanation:

1/5 =3×a (divied both side by 3)

a= 1/5 ÷3

4 0

3 years ago

Read 2 more answers

A rectangular box is to have a square base and a volume of 20 ft3. If the material for the base costs $0.30 per square foot, the

fomenos

Answer:

Step-by-step explanation:

Im sorry i dont really know ur anwer. Hope someone else can help you.

8 0

3 years ago

Given the equation 9x+3/4 y=6 and 2x+1/2 y=9, by what factor would you multiply the second equation to eliminate y and solve the

anyanavicka [17]

To eliminate a cariable in a system of equations, we multiply the variable by a factor that will make both coefficients of the variable to be equal.
Thus, we multiply the coefficient of y in the second equation by a factor that will make it equal to the coefficient of y in the first equation. i.e. multiply 1/2 by a factor that makes it equal to 3/4. and the factor is 3/2.
Therefore, the third option is the correct answer.

5 0

3 years ago

A system of equations is shown below. y = -5x - 2 y=3x - 4 What is the solution to the system of equations?​

A system of equations is shown below. y = -5x - 2 y=3x - 4 What is the solution to the system of equations?