All categories

3 years ago

If g(x) = 3 - 2x find, g(-1)

Mathematics

1 answer:

pogonyaev3 years ago

3 0

Steps to solve:

g(x) = 3 - 2x when g(-1)

~Substitute

g(-1) = 3 - 2(-1)

~Simplify

g(-1) = 3 - (-2)

~Simplify

g(-1) = 3 + 2

~Add

g(-1) = 5

Best of Luck!

You might be interested in

A standard weight known to weigh 10 grams. Some suspect bias in weights due to manufacturing process. To assess the accuracy of

notsponge [240]

Answer:

a) The 98% confidence interval for the mean weight is between 10.00409 grams and 10.00471 grams

b) 49 measurements are needed.

Step-by-step explanation:

Question a:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1 - 0.98}{2} = 0.01$

Now, we have to find z in the Ztable as such z has a pvalue of $1 - \alpha$ .

That is z with a pvalue of $1 - 0.01 = 0.99$ , so Z = 2.327.

Now, find the margin of error M as such

$M = z\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

$M = 2.327\frac{0.0003}{\sqrt{5}} = 0.00031$

The lower end of the interval is the sample mean subtracted by M. So it is 10.0044 - 0.00031 = 10.00409 grams

The upper end of the interval is the sample mean added to M. So it is 10 + 0.00031 = 10.00471 grams

The 98% confidence interval for the mean weight is between 10.00409 grams and 10.00471 grams.

(b) How many measurements must be averaged to get a margin of error of +/- 0.0001 with 98% confidence?

We have to find n for which M = 0.0001. So

$M = z\frac{\sigma}{\sqrt{n}}$

$0.0001 = 2.327\frac{0.0003}{\sqrt{n}}$

$0.0001\sqrt{n} = 2.327*0.0003$

$\sqrt{n} = \frac{2.327*0.0003}{0.0001}$

$(\sqrt{n})^2 = (\frac{2.327*0.0003}{0.0001})^2$

$n = 48.73$

Rounding up

49 measurements are needed.

7 0

3 years ago

Which vocabulary word best describes the math sentence you see here?

nlexa [21]

Answer:

Expression

Step-by-step explanation:

Remember, an expression is a mathematical phrase that contains numbers, variables, or both. Expressions never have an equal sign. An equation is a mathematical sentence that says two expressions are equal. My work don't copy®️

7 0

2 years ago

The cafeteria uses rectangular trays with a raised edge around them. The area of the flat surface of each tray is 228 Inches squ

solong [7]

Answer: D 62 inches

Step-by-step explanation: Given area of each tray = 228 in2 inches

7 0

3 years ago

Read 2 more answers

Zero is an element of the set of natural numbers

kipiarov [429]

That is true. it is part of natural numbers.

4 0

3 years ago

Read 2 more answers

Describe the dimensions of two different prisms that each have a volume of 2,400 cubic centimeters

MArishka [77]

That it is 4,6090 because when u divide that ,400 by 2,400 u will get 4,000

8 0

3 years ago

If g(x) = 3 - 2x find, g(-1)​

If g(x) = 3 - 2x find, g(-1)