1 year ago

Solve each system by graphing or using a table. Check your answers.

Mathematics

1 answer:

gregori [183]1 year ago

3 0

Answer: no solution

You might be interested in

In ΔQRS, q = 890 cm, s = 810 cm and ∠S=120°. Find all possible values of ∠Q, to the nearest degree.

Lelechka [254]

Answer: no possible triangles

Step-by-step explanation:

4 0

2 years ago

Suppose we want a 90% confidence interval for the average amount spent on entertainment (movies, concerts, dates, etc.) by fresh

katovenus [111]

Answer:

609

Step-by-step explanation:

Standard deviation = $\sigma$ = $30

Margin of error = E = $2

Confidence level = 90%

Since the distribution is said to be normal, we will use z scores to solve this problem.

The z score for 90% confidence level = z = 1.645

Sample size= n = ?

The formula to calculate the margin of error is:

$E=z\frac{\sigma}{\sqrt{n}}\\\\\sqrt{n}=z\frac{\sigma}{E}\\\\n=(\frac{z\sigma}{E} )^{2}$

Using the values in above equation, we get:

$n=(\frac{1.645 \times 30}{2} )^{2}\\\\ n = 608.9$

This means, the minimum number of observations required is 609

6 0

2 years ago

Write the standard form of the equation of the circle with radius 4 and center (−7,−6).

olasank [31]

The equation of a circle is written as (x-h)^2 +(y-k)^2 = r^2

h is the x value of the center and k is the y value of the center and r is the radius.

Replace h, k and r with the given information:

(x- -7)^2 + (y - -6)^2 = 4^2

Simplify:

(x+7)^2 + (y+6)^2 = 16

4 0

2 years ago

How many inches are in a foot then converted into millimeters

Semmy [17]

There are 12 inches in a foot. When you convert 12 into millimeters, it becomes 304.8.

6 0

2 years ago

Square root of 476 is?

steposvetlana [31]

Answer:

The square root of 476 is 21.8

5 0

2 years ago

Read 2 more answers