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4 years ago

NEW: Please help! [99 Points]

Mathematics

2 answers:

Zinaida [17]4 years ago

4 0

The domain are the x values and the range is the y values. In this case you are looking at the x values. You also want to put them in order
{-2, -1, 4, 6}
Your answer is A!
Hope this helps!

saveliy_v [14]4 years ago

3 0

The domain is the x-values listed in the points.

With this knowledge, we know that the domains are -2, 2, -1, 4

A. {-2,-1, 2, 4} is your answer

hope this helps

You might be interested in

If f(x)=4x3+3x2−5x+20 and g(x)=9x3−4x2+10x−55, what is (g−f)(x)?

Montano1993 [528]

Answer:

Step-by-step explanation:

(g-f)(x) = 9x³ - 4x² + 10x - 55 - [ 4x³ +3x² - 5x + 20]

To remove the parenthesis, take - inside, multiply f(x) by -1

= 9x³ - 4x² + 10x - 55 - 4x³ - 3x² + 5x - 20

Now, bring like terms together,

= 9x³ - 4x³ - 4x² - 3x² + 10x + 5x - 55 - 20

= 5x³ - 7x² + 15x - 75

3 0

4 years ago

A. Student GPAs: Bob’s z-score z = + 1.71 μ = 2.98 σ = 0.36 b. Weekly work hours: Sarah’s z-score z = + 1.18 μ = 21.6 σ = 7.1 c.

hjlf

Answer:

a) $x = \mu +z*\sigma$

And replacing we got:

$x= 2.98 + 1.71*0.36 = 3.5956$

b) $x = \mu +z*\sigma$

And replacing we got:

$x= 21.6 + 1.18*7.1 = 29.978$

c) $x = \mu -z*\sigma$

And replacing we got:

$x= 150 - 1.35*40= 96$

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Part a

Let X the random variable of interest for this case. We define the z score with the following formula:

$z=\frac{x-\mu}{\sigma}$

And for this case we know that $z = 1.71, \mu = 2.98,\sigma = 0.36$

If we solve for x from the z score formula we got:

$x = \mu +z*\sigma$

And replacing we got:

$x= 2.98 + 1.71*0.36 = 3.5956$

Part b

Let X the random variable of interest for this case. We define the z score with the following formula:

$z=\frac{x-\mu}{\sigma}$

And for this case we know that $z = 1.18, \mu = 21.6,\sigma = 7.1$

If we solve for x from the z score formula we got:

$x = \mu +z*\sigma$

And replacing we got:

$x= 21.6 + 1.18*7.1 = 29.978$

Part c

Let X the random variable of interest for this case. We define the z score with the following formula:

$z=\frac{x-\mu}{\sigma}$

And for this case we know that $z = -1.35, \mu = 150,\sigma = 40$

If we solve for x from the z score formula we got:

$x = \mu -z*\sigma$

And replacing we got:

$x= 150 - 1.35*40= 96$

5 0

3 years ago

Can someone pwease help meh ;((

kompoz [17]

Answer:

Step-by-step explanation:

Part A:

(400-325)/(5-0)

75/5= 15 is the slope

Part B:

(0, 325) (5, 400)

y - 325 = 15(x - 0)

Part C:

y = 15x + 325

Part D:

x = 12

y = 15(12)+ 325

y = 180 + 325

y = $505

6 0

4 years ago

What is the solution to the linear equation? d – 10 – 2d + 7 = 8 + d – 10 – 3d

pishuonlain [190]

Answer:

d = 0.33

Step-by-step explanation:

First off, you want to get like terms next to each other. We'll move the numbers with variables on one side and normal numbers on the other. Since we're changing the sides of the equal sign they're on, this also changes whether their positive or negative.

d - d - 2d + 3d = 10 -7 + 8 - 10

Now that they're together, we can add or subtract them. The variables without numbers can be ones for this equation.

3d = 1

Now we divide 1 by 3 to find what d equals.

3d/3 = 1/3

d = 0.33

6 0

3 years ago

Rounding in the calculation of monthly interest rates is discouraged. Such rounding can lead to answers different from those pre

IRINA_888 [86]

Answer:

115736.83

Step-by-step explanation:

Effective rate:

.07/12= .005833333333

$770(\frac{1-(1+.005833333)^{-30*12}}{.005833333333})=115736.83$

4 0

3 years ago

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