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3 years ago

Find the image of -2 under the function f(x) =2x-1

Mathematics

1 answer:

Amiraneli [1.4K]3 years ago

5 0

Answer:

- 5

Step-by-step explanation:

Substitute x = - 2 into f(x)

f(- 2) = 2(- 2) - 1 = - 4 - 1 = - 5

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What is 254212610 rounded to nearest million

Vinil7 [7]

Answer:

Step-by-step explanation:

Starting from the right, put this into groups of three so you can see for sure where a million is.

254 212 610

A million is right where the 4 is. So use the hundred thousands (the second 2) to round to the nearest million. Since 2 is less than 5, it rounds like this.

254 000 000

7 0

3 years ago

The molarity of a solute in solution is defined to be the number of moles of solute per liter of solution (1 mole = 6.02 × 1023

KengaRu [80]

Answer:

a) 0.65

b) 0.1581

Step-by-step explanation:

We are given the following in the question:

Distribution of X:

Mean = 0.125

Standard deviation = 0.05

Distribution of Y:

Mean = 0.350

Standard deviation = 0.10

Solution:

$M = X + 1.5Y$

a) mean of M

$\mu_M = \mu_X + 1.5(\mu_Y) = 0.125 + 1.5(0.350) = 0.65$

b) standard deviation of M

If X and Y are independent then,

$Var(X+Y) = Var(X) + Var(Y)\\Var)aX) = a^2Var(X)$

$Var(M) = Var(X+1.5Y)\\Var(M) =Var(X) + (1.5)^2Var(Y)\\Var(M) = (0.05)^2 + (1.5)^2(0.10)^2 = 0.025$

Standard deviation of M =

$=\sqrt{Var(M)} = \sqrt{0.025} = 0.1581$

4 0

3 years ago

Please help the t0 means to

guajiro [1.7K]

Yes , because 2-2 equals 0 then 0+5x leaving just 5x as the answer

4 0

3 years ago

-5/11h + 7/9 equals 2/9

Cloud [144]

-5/11 h. =. -5/9

h = -5/9 * 11/-5=11/9

6 0

3 years ago

PLEASE HELP !!!!!!!!!!!!

Firlakuza [10]

I think it’s D, hope this helps

8 0

3 years ago

Read 2 more answers

Find the image of -2 under the function f(x) =2x-1​

Find the image of -2 under the function f(x) =2x-1